This document provides an overview of the anatomy, signs and symptoms, physical examination, and diagnostic evaluation of the hepatobiliary system. It begins with the anatomy of the liver, gallbladder, and portal vein. Common signs and symptoms of conditions affecting this system are then discussed, such as jaundice, ascites, and variceal bleeding. The document outlines how to perform a physical examination of the abdomen, including inspection, percussion, palpation of the liver and spleen. Finally, it reviews various laboratory and imaging tests that can aid in examination of the hepatobiliary system, such as liver enzyme levels, ultrasound, and angiography.
The liver is located in the upper right quadrant of the abdomen below the diaphragm. It has two lobes and is divided into segments and lobules. The liver receives blood from the hepatic artery and portal vein and performs important metabolic, hematological, synthetic, protective, storage, and excretory functions. Cirrhosis is scarring of the liver caused by chronic liver disease that results in deterioration of liver function and portal hypertension. Common causes are alcohol, hepatitis B/C, and obesity. Symptoms include fatigue, jaundice, ascites, and bleeding from varices. Treatment involves managing complications through diet, medications, TIPS procedure, and potentially transplantation.
The document summarizes key aspects of the accessory organs of the digestive system including the liver, gallbladder and bile ducts, and pancreas. It describes the anatomy, functions, common diseases, and nursing care considerations for conditions that can affect each organ system.
The document describes the identification and characteristics of the liver and liver abscesses. It notes that the liver is the largest organ, reddish brown and rubbery. It has right and left lobes covered by Glisson's capsule. Liver abscesses can be amoebic or pyogenic, containing pus, and can be solitary or multiple. Amoebic abscesses are caused by the parasite Entamoeba histolytica while pyogenic abscesses are usually caused by bacteria like E. coli. Clinical presentation includes pain, fever and jaundice. Complications include pleural effusion, ascites and rupture. Diagnosis involves ultrasound, CT and serology tests. Treatment involves antibiotics and sometimes percutaneous drainage.
Cirrhosis is the end stage of chronic liver disease characterized by fibrosis and the conversion of liver tissue into abnormal nodules, leading to loss of liver function. It has many potential causes, including alcohol, viral hepatitis, autoimmune conditions, and genetic disorders. Common complications of cirrhosis include ascites, bleeding varices, hepatic encephalopathy, and liver failure. Treatment focuses on managing complications, treating the underlying cause if possible, and supportive care such as proper nutrition and antibiotics for infections. The prognosis depends on the severity of liver disease and development of complications.
- Viral hepatitis can present asymptomatically, symptomatically before jaundice, or progress to fulminant hepatitis or chronic hepatitis. Diagnosis involves blood tests to check liver enzymes and serology or molecular testing to determine the virus.
- Liver abscesses can be pyogenic (most common), amebic, or fungal. Amebic abscesses are caused by Entamoeba histolytica and present with fever, abdominal pain, and hepatomegaly. Pyogenic abscesses require drainage if large or not improving with antibiotics.
- Hydatid cysts are caused by the tapeworm Echinococcus granulosus. Surgical removal is usually required for large or infected cysts while
Imaging and intervention in hemetemesisSindhu Gowdar
This document discusses various imaging modalities for evaluating gastrointestinal bleeding, including hematemesis. It provides details on angiography, computed tomography angiography, and endoscopy. The key points are:
- Endoscopy is the primary initial investigation but additional techniques like CT angiography and catheter angiography may be needed when endoscopy is negative or fails to identify the bleeding source.
- CT angiography has advantages over catheter angiography as it is more widely available, non-invasive, and allows detection of bleeding sources throughout the GI tract.
- Both endoscopy and CT angiography play important roles in evaluating GI bleeding, with endoscopy also allowing for therapeutic interventions when a source is identified.
The liver is located in the upper right quadrant of the abdomen below the diaphragm. It has two lobes and is divided into segments and lobules. The liver receives blood from the hepatic artery and portal vein and performs important metabolic, hematological, synthetic, protective, storage, and excretory functions. Cirrhosis is scarring of the liver caused by chronic liver disease that results in deterioration of liver function and portal hypertension. Common causes are alcohol, hepatitis B/C, and obesity. Symptoms include fatigue, jaundice, ascites, and bleeding from varices. Treatment involves managing complications through diet, medications, TIPS procedure, and potentially transplantation.
The document summarizes key aspects of the accessory organs of the digestive system including the liver, gallbladder and bile ducts, and pancreas. It describes the anatomy, functions, common diseases, and nursing care considerations for conditions that can affect each organ system.
The document describes the identification and characteristics of the liver and liver abscesses. It notes that the liver is the largest organ, reddish brown and rubbery. It has right and left lobes covered by Glisson's capsule. Liver abscesses can be amoebic or pyogenic, containing pus, and can be solitary or multiple. Amoebic abscesses are caused by the parasite Entamoeba histolytica while pyogenic abscesses are usually caused by bacteria like E. coli. Clinical presentation includes pain, fever and jaundice. Complications include pleural effusion, ascites and rupture. Diagnosis involves ultrasound, CT and serology tests. Treatment involves antibiotics and sometimes percutaneous drainage.
Cirrhosis is the end stage of chronic liver disease characterized by fibrosis and the conversion of liver tissue into abnormal nodules, leading to loss of liver function. It has many potential causes, including alcohol, viral hepatitis, autoimmune conditions, and genetic disorders. Common complications of cirrhosis include ascites, bleeding varices, hepatic encephalopathy, and liver failure. Treatment focuses on managing complications, treating the underlying cause if possible, and supportive care such as proper nutrition and antibiotics for infections. The prognosis depends on the severity of liver disease and development of complications.
- Viral hepatitis can present asymptomatically, symptomatically before jaundice, or progress to fulminant hepatitis or chronic hepatitis. Diagnosis involves blood tests to check liver enzymes and serology or molecular testing to determine the virus.
- Liver abscesses can be pyogenic (most common), amebic, or fungal. Amebic abscesses are caused by Entamoeba histolytica and present with fever, abdominal pain, and hepatomegaly. Pyogenic abscesses require drainage if large or not improving with antibiotics.
- Hydatid cysts are caused by the tapeworm Echinococcus granulosus. Surgical removal is usually required for large or infected cysts while
Imaging and intervention in hemetemesisSindhu Gowdar
This document discusses various imaging modalities for evaluating gastrointestinal bleeding, including hematemesis. It provides details on angiography, computed tomography angiography, and endoscopy. The key points are:
- Endoscopy is the primary initial investigation but additional techniques like CT angiography and catheter angiography may be needed when endoscopy is negative or fails to identify the bleeding source.
- CT angiography has advantages over catheter angiography as it is more widely available, non-invasive, and allows detection of bleeding sources throughout the GI tract.
- Both endoscopy and CT angiography play important roles in evaluating GI bleeding, with endoscopy also allowing for therapeutic interventions when a source is identified.
1. Hepatomegaly and splenomegaly refer to enlargement of the liver and spleen respectively. The liver and spleen can enlarge due to infections, congestion, infiltration, storage disorders, or neoplasms.
2. Physical examination is important for evaluating hepatomegaly and splenomegaly, including inspection, palpation, and percussion of the abdomen. Laboratory and imaging tests may also be needed to determine the underlying cause.
3. Management depends on the specific cause, which is determined through a thorough history, physical exam, and appropriate testing.
Lower gastrointestinal bleeding (LGIB) refers to blood loss originating from a site distal to the ligament of Treitz. Common causes of LGIB include hemorrhoids, diverticulosis, angiodysplasia, and anal cancers. Hematochezia is the typical presentation of LGIB. Initial workup includes examination, blood tests to check for anemia and coagulopathy, and colonoscopy for diagnosis and potential therapeutic intervention to stop bleeding. Management depends on the cause but may include conservative measures, nonsurgical options like banding or surgical procedures like hemorrhoidectomy.
1) The document provides information on the evaluation and management of bleeding per rectum (BPR). It discusses the history, physical exam, differential diagnoses, investigations and treatment options for common causes of BPR.
2) Common causes of BPR include hemorrhoids, anal fissures, colorectal polyps, inflammatory bowel disease, diverticular disease, and colorectal cancers. The history can help determine if the bleeding is from distal or proximal lesions.
3) Physical exam involves digital rectal exam to feel for masses or other abnormalities. Initial investigations include labs, endoscopy, and imaging. Treatment depends on the underlying cause but may include medications, procedures like banding or surgery.
This document provides an overview of how to perform an abdominal examination. It discusses examining the abdomen by inspection, palpation, percussion and auscultation in a systematic manner. Key points covered include examining the abdomen in four quadrants, assessing for masses, tenderness, organomegaly and ascites. Common clinical tests discussed are Murphy's sign, McBurney's point and shifting dullness.
The document provides an overview of the liver, biliary apparatus, and related diseases. It describes the anatomy and blood supply of the liver and gallbladder. It discusses hepatocellular carcinoma and bile duct cancers, including risk factors, clinical presentation, diagnosis, and treatment. Hepatocellular carcinoma is often associated with liver cirrhosis and viral hepatitis. Gallbladder cancer commonly occurs in the setting of gallstones and has a poor prognosis due to late presentation. Bile duct cancer risk factors include liver flukes and primary sclerosing cholangitis. Obstructive jaundice is a common symptom of bile duct cancers.
This document provides information on portal hypertension, including:
1. It defines portal hypertension and describes types such as cirrhotic and non-cirrhotic portal hypertension.
2. It outlines the portal venous system and portosystemic circulation.
3. It discusses causes, clinical features, investigations, and management of portal hypertension including pharmacotherapy, endoscopic therapy, TIPS procedure, and surgeries.
4. Prevention of recurrent variceal hemorrhage is highlighted through long-term pharmacotherapy, endoscopic therapy, interventional procedures like TIPS, or surgical shunts if other options fail.
The document discusses portal hypertension in children. It covers the anatomy of the portal system, causes/classifications of portal hypertension, clinical manifestations, diagnosis, and treatment. Regarding diagnosis, it describes using endoscopy to identify varices, ultrasound to detect portal vein thrombosis, and CT/MRI/venography to further evaluate vascular anatomy. Treatment of acute variceal bleeding involves stabilizing the patient and reducing portal pressure to stop bleeding.
This document discusses portal hypertension and variceal bleeding. It begins by describing portal hemodynamics and defining clinically significant portal hypertension as a hepatic venous pressure gradient (HVPG) greater than 10-12 mm Hg.
The etiology of portal hypertension is categorized as prehepatic, hepatic, or posthepatic. Prehepatic causes include portal/splenic vein thrombosis. Hepatic causes include cirrhosis, which leads to fibrosis and increased production of vasoconstrictors. Posthepatic causes include Budd-Chiari syndrome.
Complications of portal hypertension include variceal bleeding, ascites, hepatic encephalopathy, and hepatorenal syndrome. Investigations for diagnosis include ultrasound Doppler,
A 45-year-old male with a history of alcoholic liver disease and cirrhosis presented with abdominal pain and distension. He was diagnosed with liver cirrhosis and portal hypertension based on his history, examination, and lab results. He was posted for esophageal variceal banding to treat varices that had developed as a result of his portal hypertension.
LOWER GI HEMORRHAGE- Introduction
#surgicaleducator #babysurgeon
Dear Viewers,
Greetings from “Surgical Educator”
Today I have uploaded an introductory video on Lower GI haemorrhage. In this episode, I have talked about the various causes for lower GI bleeding, applied anatomy,History&Physical exam,investigations and management algorithm for lower GI bleeding. In the subsequent episodes in this series of videos, I will be talking about the individual causes elaborately- one in each video. You can watch this video in the following links:
surgicaleducator.blogspot.com
youtube.com/c/surgicaleducator
Thank you for watching the video
This document discusses gastrointestinal bleeding, its causes, presentations, evaluation, and management. The most common causes of upper GI bleeding are varices, erosive gastritis, and peptic ulcers while the most common causes of lower GI bleeding are hemorrhoids, dysentery, polyps, and inflammatory bowel diseases. Evaluation involves history, physical exam, endoscopy, and other imaging modalities. Management depends on the severity and includes IV fluids, blood transfusions, endoscopic therapies, and angiography.
Brief description of genitourinary system-related disorders with their nursing management. This presentation involves glomerulonephritis, nephrotic syndrome, acute renal failure, and renal calculi.
This document provides an overview of examining the abdomen in pediatrics. It describes the 9 regions of the abdomen and what structures are located in each. It then discusses general examination, inspection, palpation, percussion, and auscultation of the abdomen. For palpation, it provides details on examining the liver, spleen, kidneys, abdominal lumps, and distinguishing renal lumps from spleen. It concludes with describing examination of the genitalia.
A 50-year-old man presented with abdominal pain, distension, vomiting, and constipation. Imaging showed findings suggestive of bowel obstruction. The document discusses the evaluation, causes, and management of bowel obstructions, focusing on distinguishing between small vs. large bowel obstruction and determining the etiology and complications like strangulation. Initial management involves resuscitation, decompression, correction of electrolyte abnormalities, and antibiotics while determining need for surgery.
This document discusses cholelithiasis (gallstones) and cholecystitis (inflammation of the gallbladder). It covers the anatomy of the gallbladder and biliary tree. Common causes of gallstones include altered gallbladder function and supersaturated bile. Gallstones can be asymptomatic, cause biliary colic, or lead to complications like cholecystitis, pancreatitis and obstruction. Acute calculous cholecystitis is usually caused by a gallstone obstructing the cystic duct. Clinical features include right upper quadrant pain and tenderness. Investigations include ultrasound and blood tests. Treatment is usually laparoscopic cholecystectomy.
This document provides information on cholelithiasis (gallstones) and cholecystitis (inflammation of the gallbladder). It discusses the anatomy and physiology of the gallbladder and biliary system. Common causes of gallstones include altered gallbladder function, supersaturated bile, and altered enterohepatic circulation. Gallstones can be asymptomatic, cause biliary colic, or lead to complications like cholecystitis, pancreatitis, or cholangitis. Acute calculous cholecystitis is usually caused by a gallstone obstructing the cystic duct. Symptoms include right upper quadrant pain and tenderness. Treatment is usually laparoscopic cholecystectomy.
This document defines and describes lower gastrointestinal bleeding. Key points:
- Lower GI bleeding occurs distal to the ligament of Treitz and is defined as abnormal bleeding into the bowel lumen. Significant bleeding is over 10ml/day.
- The lower GI tract includes the small intestine (duodenum, jejunum, ileum), large intestine (cecum, colon, rectum), and anus.
- Lower GI bleeding typically presents as hematochezia (red or dark blood in stool) or melena (dark stools). Massive bleeding causes hemodynamic instability while moderate bleeding is stable.
- Common causes include vascular abnormalities, inflammatory bowel disease, cancers, polyps, diverticular
This document discusses dysphagia (difficulty swallowing) by summarizing its anatomy, causes, evaluation, and treatments. Dysphagia can arise from problems in the oral, pharyngeal, or esophageal phases of swallowing and is evaluated through history, examination, imaging like barium swallow, and endoscopy. Common causes include oral cancers, pharyngeal infections or lesions, esophageal cancers, strictures, and motility disorders. Esophageal cancer is typically diagnosed by endoscopy and imaging and treated with surgery, radiation, chemotherapy, or a combination depending on stage. Outcomes remain poor with only 5-10% five-year survival for advanced esophageal cancer.
This document discusses lower gastrointestinal (GI) bleeding, including its causes, presentation, evaluation, and management. Some key points:
- The most common causes of major LGI bleed are diverticulosis, colonic neoplasms, and angiodysplasias. Colonoscopy is the investigation of choice.
- Occult LGI bleeding is first evaluated with fecal occult blood testing (FOBT). CT angiography can help localize bleeding if it persists or patients are unstable.
- Evaluation involves history, physical exam including rectal exam, blood tests, stool tests, endoscopy, imaging studies like colonoscopy, angiography or nuclear scans depending on findings.
- Treatment depends on
Wilson's disease is a genetic disorder caused by mutations in the ATP7B gene resulting in excessive copper deposition in tissues. It presents with hepatic, neurological or psychiatric symptoms. Diagnosis involves low serum ceruloplasmin, high urinary copper, Kayser-Fleisher rings, and brain MRI changes. Treatment includes copper chelators like penicillamine and trientine, zinc supplements, or liver transplantation in severe cases to reduce copper levels and prevent further organ damage. Lifelong management is needed but prognosis is good if detected and treated early.
More Related Content
Similar to Hovhannisyan HS_Propaedeutics of HBS.pdf
1. Hepatomegaly and splenomegaly refer to enlargement of the liver and spleen respectively. The liver and spleen can enlarge due to infections, congestion, infiltration, storage disorders, or neoplasms.
2. Physical examination is important for evaluating hepatomegaly and splenomegaly, including inspection, palpation, and percussion of the abdomen. Laboratory and imaging tests may also be needed to determine the underlying cause.
3. Management depends on the specific cause, which is determined through a thorough history, physical exam, and appropriate testing.
Lower gastrointestinal bleeding (LGIB) refers to blood loss originating from a site distal to the ligament of Treitz. Common causes of LGIB include hemorrhoids, diverticulosis, angiodysplasia, and anal cancers. Hematochezia is the typical presentation of LGIB. Initial workup includes examination, blood tests to check for anemia and coagulopathy, and colonoscopy for diagnosis and potential therapeutic intervention to stop bleeding. Management depends on the cause but may include conservative measures, nonsurgical options like banding or surgical procedures like hemorrhoidectomy.
1) The document provides information on the evaluation and management of bleeding per rectum (BPR). It discusses the history, physical exam, differential diagnoses, investigations and treatment options for common causes of BPR.
2) Common causes of BPR include hemorrhoids, anal fissures, colorectal polyps, inflammatory bowel disease, diverticular disease, and colorectal cancers. The history can help determine if the bleeding is from distal or proximal lesions.
3) Physical exam involves digital rectal exam to feel for masses or other abnormalities. Initial investigations include labs, endoscopy, and imaging. Treatment depends on the underlying cause but may include medications, procedures like banding or surgery.
This document provides an overview of how to perform an abdominal examination. It discusses examining the abdomen by inspection, palpation, percussion and auscultation in a systematic manner. Key points covered include examining the abdomen in four quadrants, assessing for masses, tenderness, organomegaly and ascites. Common clinical tests discussed are Murphy's sign, McBurney's point and shifting dullness.
The document provides an overview of the liver, biliary apparatus, and related diseases. It describes the anatomy and blood supply of the liver and gallbladder. It discusses hepatocellular carcinoma and bile duct cancers, including risk factors, clinical presentation, diagnosis, and treatment. Hepatocellular carcinoma is often associated with liver cirrhosis and viral hepatitis. Gallbladder cancer commonly occurs in the setting of gallstones and has a poor prognosis due to late presentation. Bile duct cancer risk factors include liver flukes and primary sclerosing cholangitis. Obstructive jaundice is a common symptom of bile duct cancers.
This document provides information on portal hypertension, including:
1. It defines portal hypertension and describes types such as cirrhotic and non-cirrhotic portal hypertension.
2. It outlines the portal venous system and portosystemic circulation.
3. It discusses causes, clinical features, investigations, and management of portal hypertension including pharmacotherapy, endoscopic therapy, TIPS procedure, and surgeries.
4. Prevention of recurrent variceal hemorrhage is highlighted through long-term pharmacotherapy, endoscopic therapy, interventional procedures like TIPS, or surgical shunts if other options fail.
The document discusses portal hypertension in children. It covers the anatomy of the portal system, causes/classifications of portal hypertension, clinical manifestations, diagnosis, and treatment. Regarding diagnosis, it describes using endoscopy to identify varices, ultrasound to detect portal vein thrombosis, and CT/MRI/venography to further evaluate vascular anatomy. Treatment of acute variceal bleeding involves stabilizing the patient and reducing portal pressure to stop bleeding.
This document discusses portal hypertension and variceal bleeding. It begins by describing portal hemodynamics and defining clinically significant portal hypertension as a hepatic venous pressure gradient (HVPG) greater than 10-12 mm Hg.
The etiology of portal hypertension is categorized as prehepatic, hepatic, or posthepatic. Prehepatic causes include portal/splenic vein thrombosis. Hepatic causes include cirrhosis, which leads to fibrosis and increased production of vasoconstrictors. Posthepatic causes include Budd-Chiari syndrome.
Complications of portal hypertension include variceal bleeding, ascites, hepatic encephalopathy, and hepatorenal syndrome. Investigations for diagnosis include ultrasound Doppler,
A 45-year-old male with a history of alcoholic liver disease and cirrhosis presented with abdominal pain and distension. He was diagnosed with liver cirrhosis and portal hypertension based on his history, examination, and lab results. He was posted for esophageal variceal banding to treat varices that had developed as a result of his portal hypertension.
LOWER GI HEMORRHAGE- Introduction
#surgicaleducator #babysurgeon
Dear Viewers,
Greetings from “Surgical Educator”
Today I have uploaded an introductory video on Lower GI haemorrhage. In this episode, I have talked about the various causes for lower GI bleeding, applied anatomy,History&Physical exam,investigations and management algorithm for lower GI bleeding. In the subsequent episodes in this series of videos, I will be talking about the individual causes elaborately- one in each video. You can watch this video in the following links:
surgicaleducator.blogspot.com
youtube.com/c/surgicaleducator
Thank you for watching the video
This document discusses gastrointestinal bleeding, its causes, presentations, evaluation, and management. The most common causes of upper GI bleeding are varices, erosive gastritis, and peptic ulcers while the most common causes of lower GI bleeding are hemorrhoids, dysentery, polyps, and inflammatory bowel diseases. Evaluation involves history, physical exam, endoscopy, and other imaging modalities. Management depends on the severity and includes IV fluids, blood transfusions, endoscopic therapies, and angiography.
Brief description of genitourinary system-related disorders with their nursing management. This presentation involves glomerulonephritis, nephrotic syndrome, acute renal failure, and renal calculi.
This document provides an overview of examining the abdomen in pediatrics. It describes the 9 regions of the abdomen and what structures are located in each. It then discusses general examination, inspection, palpation, percussion, and auscultation of the abdomen. For palpation, it provides details on examining the liver, spleen, kidneys, abdominal lumps, and distinguishing renal lumps from spleen. It concludes with describing examination of the genitalia.
A 50-year-old man presented with abdominal pain, distension, vomiting, and constipation. Imaging showed findings suggestive of bowel obstruction. The document discusses the evaluation, causes, and management of bowel obstructions, focusing on distinguishing between small vs. large bowel obstruction and determining the etiology and complications like strangulation. Initial management involves resuscitation, decompression, correction of electrolyte abnormalities, and antibiotics while determining need for surgery.
This document discusses cholelithiasis (gallstones) and cholecystitis (inflammation of the gallbladder). It covers the anatomy of the gallbladder and biliary tree. Common causes of gallstones include altered gallbladder function and supersaturated bile. Gallstones can be asymptomatic, cause biliary colic, or lead to complications like cholecystitis, pancreatitis and obstruction. Acute calculous cholecystitis is usually caused by a gallstone obstructing the cystic duct. Clinical features include right upper quadrant pain and tenderness. Investigations include ultrasound and blood tests. Treatment is usually laparoscopic cholecystectomy.
This document provides information on cholelithiasis (gallstones) and cholecystitis (inflammation of the gallbladder). It discusses the anatomy and physiology of the gallbladder and biliary system. Common causes of gallstones include altered gallbladder function, supersaturated bile, and altered enterohepatic circulation. Gallstones can be asymptomatic, cause biliary colic, or lead to complications like cholecystitis, pancreatitis, or cholangitis. Acute calculous cholecystitis is usually caused by a gallstone obstructing the cystic duct. Symptoms include right upper quadrant pain and tenderness. Treatment is usually laparoscopic cholecystectomy.
This document defines and describes lower gastrointestinal bleeding. Key points:
- Lower GI bleeding occurs distal to the ligament of Treitz and is defined as abnormal bleeding into the bowel lumen. Significant bleeding is over 10ml/day.
- The lower GI tract includes the small intestine (duodenum, jejunum, ileum), large intestine (cecum, colon, rectum), and anus.
- Lower GI bleeding typically presents as hematochezia (red or dark blood in stool) or melena (dark stools). Massive bleeding causes hemodynamic instability while moderate bleeding is stable.
- Common causes include vascular abnormalities, inflammatory bowel disease, cancers, polyps, diverticular
This document discusses dysphagia (difficulty swallowing) by summarizing its anatomy, causes, evaluation, and treatments. Dysphagia can arise from problems in the oral, pharyngeal, or esophageal phases of swallowing and is evaluated through history, examination, imaging like barium swallow, and endoscopy. Common causes include oral cancers, pharyngeal infections or lesions, esophageal cancers, strictures, and motility disorders. Esophageal cancer is typically diagnosed by endoscopy and imaging and treated with surgery, radiation, chemotherapy, or a combination depending on stage. Outcomes remain poor with only 5-10% five-year survival for advanced esophageal cancer.
This document discusses lower gastrointestinal (GI) bleeding, including its causes, presentation, evaluation, and management. Some key points:
- The most common causes of major LGI bleed are diverticulosis, colonic neoplasms, and angiodysplasias. Colonoscopy is the investigation of choice.
- Occult LGI bleeding is first evaluated with fecal occult blood testing (FOBT). CT angiography can help localize bleeding if it persists or patients are unstable.
- Evaluation involves history, physical exam including rectal exam, blood tests, stool tests, endoscopy, imaging studies like colonoscopy, angiography or nuclear scans depending on findings.
- Treatment depends on
Similar to Hovhannisyan HS_Propaedeutics of HBS.pdf (20)
Wilson's disease is a genetic disorder caused by mutations in the ATP7B gene resulting in excessive copper deposition in tissues. It presents with hepatic, neurological or psychiatric symptoms. Diagnosis involves low serum ceruloplasmin, high urinary copper, Kayser-Fleisher rings, and brain MRI changes. Treatment includes copper chelators like penicillamine and trientine, zinc supplements, or liver transplantation in severe cases to reduce copper levels and prevent further organ damage. Lifelong management is needed but prognosis is good if detected and treated early.
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Guillain-Barre syndrome is a rare disorder where the immune system attacks the peripheral nervous system, damaging the myelin sheath surrounding nerves and causing muscle weakness and paralysis. It has several forms including acute inflammatory demyelinating polyradiculoneuropathy which causes ascending muscle weakness. It is often triggered by a bacterial or viral infection and can lead to complications involving respiratory or cardiac function if not properly managed with supportive care such as ventilation, IV immunoglobulins or plasmapheresis.
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This document discusses cardiovascular changes during pregnancy and heart disease in pregnancy. It notes that while rare, heart disease during pregnancy can be serious for both mother and fetus. The cardiovascular system undergoes changes during pregnancy like increased cardiac output and heart rate. Symptoms of normal pregnancy like fatigue can mimic heart disease. Careful monitoring and management is needed for pregnant women with preexisting heart conditions. The document categorizes and describes different types of heart disease that can occur during pregnancy such as rheumatic heart disease, congenital heart disease and cyanotic heart disease. It provides guidance on diagnosing heart conditions during pregnancy and managing potential complications.
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This document provides a template for presenting a new product, service, or idea. It recommends beginning with something unexpected to grab attention, such as highlighting what is unusual about the topic. The presentation should then provide examples to help the audience visualize the problem being solved and who would benefit from the solution. Specific people should be used to illustrate how the solution helps reach goals, such as allowing a small business owner to better serve international customers and helping a soccer player overcome language barriers.
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This document provides an overview of bronchial asthma including its pathophysiology, causes, diagnosis, and management. It defines asthma as a chronic inflammatory airway disease characterized by recurrent episodes of wheezing, breathlessness, and coughing. Environmental factors and genetic susceptibility contribute to its development. Spirometry is important for diagnosis and monitoring treatment. Management involves both controller medications like inhaled corticosteroids to reduce inflammation and reliever medications like short-acting beta
Cor pulmonale refers to right heart failure caused by lung disease that increases pulmonary vascular resistance. It can be acute or chronic. Chronic cor pulmonale is commonly caused by chronic obstructive pulmonary disease (COPD). Symptoms include fatigue, dyspnea, cyanosis, and right ventricular hypertrophy. Treatment involves addressing the underlying lung condition, diuretics, anticoagulants, oxygen supplementation, and possibly lung transplantation in severe cases. While knowledge of pulmonary hypertension pathogenesis has increased, more understanding is still needed to optimize patient outcomes.
A hydatidiform mole, or molar pregnancy, is a gestational trophoblastic disease caused by abnormal placental development that results in fluid-filled cysts instead of normal placental tissue. There are two types of molar pregnancies: complete and partial. A complete molar pregnancy occurs when an empty egg is fertilized, so the embryo cannot survive, while a partial molar pregnancy involves the fertilization of one egg by two sperm, leading to an abnormal embryo. Molar pregnancies are typically diagnosed through ultrasound and blood tests measuring HCG levels, and are treated by surgically removing the molar tissue through dilation and curettage. Complications can include gestational trophoblastic neoplasia requiring
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Physical agents refer to non-biological factors in the environment that can impact human health, such as radiation, climate, noise pollution, and vibrations. Epidemiological studies examine the effects of physical agents on populations using methods like cross-sectional studies to analyze exposure and health status at a single time, case-control studies to identify risk factors for specific health outcomes, and cohort studies to establish long-term cause-and-effect relationships. Dosimeters and sensors are tools used to measure exposure to physical agents like radiation, air pollution, and noise levels. Regulations aim to reduce harmful environmental and occupational exposures to physical agents and protect public health.
The document discusses active and passive immunity and different types of vaccines used for immunization. It defines active immunity as the production of antibodies by one's own immune system through natural infection or artificial vaccination. Passive immunity is the transfer of antibodies from another individual. Vaccines can be live, attenuated live, inactivated/killed, toxoids, or surface antigen vaccines. They are administered through various routes and immunization schemes involve primary vaccination and booster doses to maintain immunity levels.
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The pelvis is composed of four bones that form the pelvic inlet, midpelvis, and pelvic outlet. These areas are measured by diameters including the anteroposterior diameter (obstetrical conjugate) and transverse diameter. The pelvic inlet is the plane of the superior strait bounded by sacrum, pubic bones, and linea terminalis. The midpelvis is measured at the ischial spines, and the pelvic outlet consists of triangles with a base between the ischial tuberosities. Variations in pelvic shape can affect labor and delivery.
Gastroenteritis is an infection or inflammation of the digestive tract caused by viruses, bacteria, parasites, toxins, chemicals or drugs. It often results from contaminated food or water. Common symptoms include nausea, vomiting, diarrhea, abdominal pain and dehydration. Treatment focuses on rehydration. With proper treatment, gastroenteritis is usually resolved within a few days, though complications from dehydration may prolong recovery. Prevention emphasizes proper handwashing and food safety practices.
This document discusses recent treatments for lupus nephritis and summarizes a case study. It reviews definitions of glomerular pathology, the pathogenesis of lupus nephritis including the role of immune complexes, and the WHO classification system. It summarizes recent clinical trials comparing cyclophosphamide and mycophenolate mofetil as induction therapies, and azathioprine versus mycophenolate mofetil for maintenance. Rituximab was not found to be superior to placebo as an add-on therapy in one trial. The document recommends treatment and reviews considerations for a specific unemployed African American male patient with new onset nepus nephritis.
Cell Therapy Expansion and Challenges in Autoimmune DiseaseHealth Advances
There is increasing confidence that cell therapies will soon play a role in the treatment of autoimmune disorders, but the extent of this impact remains to be seen. Early readouts on autologous CAR-Ts in lupus are encouraging, but manufacturing and cost limitations are likely to restrict access to highly refractory patients. Allogeneic CAR-Ts have the potential to broaden access to earlier lines of treatment due to their inherent cost benefits, however they will need to demonstrate comparable or improved efficacy to established modalities.
In addition to infrastructure and capacity constraints, CAR-Ts face a very different risk-benefit dynamic in autoimmune compared to oncology, highlighting the need for tolerable therapies with low adverse event risk. CAR-NK and Treg-based therapies are also being developed in certain autoimmune disorders and may demonstrate favorable safety profiles. Several novel non-cell therapies such as bispecific antibodies, nanobodies, and RNAi drugs, may also offer future alternative competitive solutions with variable value propositions.
Widespread adoption of cell therapies will not only require strong efficacy and safety data, but also adapted pricing and access strategies. At oncology-based price points, CAR-Ts are unlikely to achieve broad market access in autoimmune disorders, with eligible patient populations that are potentially orders of magnitude greater than the number of currently addressable cancer patients. Developers have made strides towards reducing cell therapy COGS while improving manufacturing efficiency, but payors will inevitably restrict access until more sustainable pricing is achieved.
Despite these headwinds, industry leaders and investors remain confident that cell therapies are poised to address significant unmet need in patients suffering from autoimmune disorders. However, the extent of this impact on the treatment landscape remains to be seen, as the industry rapidly approaches an inflection point.
8 Surprising Reasons To Meditate 40 Minutes A Day That Can Change Your Life.pptxHolistified Wellness
We’re talking about Vedic Meditation, a form of meditation that has been around for at least 5,000 years. Back then, the people who lived in the Indus Valley, now known as India and Pakistan, practised meditation as a fundamental part of daily life. This knowledge that has given us yoga and Ayurveda, was known as Veda, hence the name Vedic. And though there are some written records, the practice has been passed down verbally from generation to generation.
Summer is a time for fun in the sun, but the heat and humidity can also wreak havoc on your skin. From itchy rashes to unwanted pigmentation, several skin conditions become more prevalent during these warmer months.
Promoting Wellbeing - Applied Social Psychology - Psychology SuperNotesPsychoTech Services
A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
DECLARATION OF HELSINKI - History and principlesanaghabharat01
This SlideShare presentation provides a comprehensive overview of the Declaration of Helsinki, a foundational document outlining ethical guidelines for conducting medical research involving human subjects.
Breast cancer: Post menopausal endocrine therapyDr. Sumit KUMAR
Breast cancer in postmenopausal women with hormone receptor-positive (HR+) status is a common and complex condition that necessitates a multifaceted approach to management. HR+ breast cancer means that the cancer cells grow in response to hormones such as estrogen and progesterone. This subtype is prevalent among postmenopausal women and typically exhibits a more indolent course compared to other forms of breast cancer, which allows for a variety of treatment options.
Diagnosis and Staging
The diagnosis of HR+ breast cancer begins with clinical evaluation, imaging, and biopsy. Imaging modalities such as mammography, ultrasound, and MRI help in assessing the extent of the disease. Histopathological examination and immunohistochemical staining of the biopsy sample confirm the diagnosis and hormone receptor status by identifying the presence of estrogen receptors (ER) and progesterone receptors (PR) on the tumor cells.
Staging involves determining the size of the tumor (T), the involvement of regional lymph nodes (N), and the presence of distant metastasis (M). The American Joint Committee on Cancer (AJCC) staging system is commonly used. Accurate staging is critical as it guides treatment decisions.
Treatment Options
Endocrine Therapy
Endocrine therapy is the cornerstone of treatment for HR+ breast cancer in postmenopausal women. The primary goal is to reduce the levels of estrogen or block its effects on cancer cells. Commonly used agents include:
Selective Estrogen Receptor Modulators (SERMs): Tamoxifen is a SERM that binds to estrogen receptors, blocking estrogen from stimulating breast cancer cells. It is effective but may have side effects such as increased risk of endometrial cancer and thromboembolic events.
Aromatase Inhibitors (AIs): These drugs, including anastrozole, letrozole, and exemestane, lower estrogen levels by inhibiting the aromatase enzyme, which converts androgens to estrogen in peripheral tissues. AIs are generally preferred in postmenopausal women due to their efficacy and safety profile compared to tamoxifen.
Selective Estrogen Receptor Downregulators (SERDs): Fulvestrant is a SERD that degrades estrogen receptors and is used in cases where resistance to other endocrine therapies develops.
Combination Therapies
Combining endocrine therapy with other treatments enhances efficacy. Examples include:
Endocrine Therapy with CDK4/6 Inhibitors: Palbociclib, ribociclib, and abemaciclib are CDK4/6 inhibitors that, when combined with endocrine therapy, significantly improve progression-free survival in advanced HR+ breast cancer.
Endocrine Therapy with mTOR Inhibitors: Everolimus, an mTOR inhibitor, can be added to endocrine therapy for patients who have developed resistance to aromatase inhibitors.
Chemotherapy
Chemotherapy is generally reserved for patients with high-risk features, such as large tumor size, high-grade histology, or extensive lymph node involvement. Regimens often include anthracyclines and taxanes.
These lecture slides, by Dr Sidra Arshad, offer a simplified look into the mechanisms involved in the regulation of respiration:
Learning objectives:
1. Describe the organisation of respiratory center
2. Describe the nervous control of inspiration and respiratory rhythm
3. Describe the functions of the dorsal and respiratory groups of neurons
4. Describe the influences of the Pneumotaxic and Apneustic centers
5. Explain the role of Hering-Breur inflation reflex in regulation of inspiration
6. Explain the role of central chemoreceptors in regulation of respiration
7. Explain the role of peripheral chemoreceptors in regulation of respiration
8. Explain the regulation of respiration during exercise
9. Integrate the respiratory regulatory mechanisms
10. Describe the Cheyne-Stokes breathing
Study Resources:
1. Chapter 42, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 36, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 13, Human Physiology by Lauralee Sherwood, 9th edition
Osteoporosis - Definition , Evaluation and Management .pdfJim Jacob Roy
Osteoporosis is an increasing cause of morbidity among the elderly.
In this document , a brief outline of osteoporosis is given , including the risk factors of osteoporosis fractures , the indications for testing bone mineral density and the management of osteoporosis
Nano-gold for Cancer Therapy chemistry investigatory projectSIVAVINAYAKPK
chemistry investigatory project
The development of nanogold-based cancer therapy could revolutionize oncology by providing a more targeted, less invasive treatment option. This project contributes to the growing body of research aimed at harnessing nanotechnology for medical applications, paving the way for future clinical trials and potential commercial applications.
Cancer remains one of the leading causes of death worldwide, prompting the need for innovative treatment methods. Nanotechnology offers promising new approaches, including the use of gold nanoparticles (nanogold) for targeted cancer therapy. Nanogold particles possess unique physical and chemical properties that make them suitable for drug delivery, imaging, and photothermal therapy.
5. The abdomen is generally divided into four
quadrants by two artificial lines that
intersect at the umbilicus
Other systems exist to further subdivide
these four quadrants into nine
regions/sections
RUQ LUQ
LLQ
RLQ
Epigastric
Right
Hypochondrium
Right
flank
Left
flank
Umbilical
Right
Iliac
Left
Iliac
Hypogastric
/ suprapubic
Left
Hypochondrium
Abdomen Topography
9. Anatomy of Portal System
The portal vein
supplies 70% of the
blood flow to the
liver, but only 40% of
the liver oxygen
supply. The remainder
of the blood comes
from the hepatic
artery, and blood from
both of these vessels
mixes in the sinusoids.
10. Four ramus communicans between
portal and systemic circulations
esophageal and gastric veins
inferior rectal-anal veins
anterior abdominal wall veins
retroperitoneal venous plexus
17. • The normal pressure of portal vein:
5-10mmHg (13~24 cmH2O)
18. Portal hypertension
• Portal hypertension is defined as a pressure > 12
mmHg.
• This increased pressure results from a functional
obstruction to blood flow from any point in the portal
system's origin (in the splanchnic bed) through the
hepatic veins (exit into the systemic circulation) or
from an increase in blood flow in the system.
P = F x R
24. Pathophysiology & Signs and Symptoms
due to PH
✓Congestive splenomegaly and hypersplenism
• Splenomegaly is defined as the spleen size >12cm in length.
• Hypersplenism is a type of disorder which causes the spleen to
rapidly and prematurely destroy blood cells
✓ Ramus communicans dilatation
✓ Ascites
25. Signs and Symptoms due to PH
• ramus communicans dilatation:
– esophageal and gastric veins: varices rupture and
gastrointestinal hemorrhage
– inferior rectal-anal veins: hemorrhoid & bleeding
– anterior abdominal wall veins: paraumbilical
varices (caput medusae)
– retroperitoneal veins plexus: dilatation &
congestion
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38. JAUNDICE
• Yellow discoloration of the skin, sclerae and mucous
membranes (BIL> 50 μmol/L or >2.0-2.5 mg/dL).
• Hyperbilirubinaemia:
✓ Prehepatic (haemolysis, Gillbert’s syndrome)
✓ Intrahepatic (viral hepatitis, drugs, cirrhosis)
✓ Posthepatic (drugs, gallstones, cancer)
40. General principles of exam
• Good light
• Relaxed patient in supine position
• Full exposure of abdomen
• Empty bladder
• Arms across chest, not above head.
• Ask patient where pain is, and examine last.
• If the patient is ticklish or frightened, initially use the patients hand
under yours as you palpate. When patient calms then use your
hands to palpate.
• Watch the patient’s face for discomfort
56. Mechanisms of ascitis
1. disordered albumin synthesis and decreased plasma
colloid osmotic pressure caused by hepatocellular
function damage
2. increased capillary filter pressure due to increased
portal hypertension
3. lymph liquid leakage into abdominal cavity from
surface of the liver because of lymph back-flow
obstruction
4. salt and water retention by aldosterone and antidiuretic
hormones deactivation disturbance
66. ABDOMINAL EXAMINATION
PALPATION
1. Ensure that your hands are warm
2. Stand on the patient’s right side
3. Help to position the patient
4. Ask whether the patient feels any pain
before you start
5. Begin with superficial examination
6. Move in a systematic manner through the
abdominal quadrants
7. Repeat palpation deeply.
69. ASCITIS
FLUID THRILL TEST
Place the palm of your left
hand against the left side of the
abdomen
Flick a finger against the right
side of the abdomen
Ask the patient to put the edge
of a hand on the midline of
the abdomen
If a ripple is felt upon flicking
we call it a fluid thrill = ascites
70. Pain in RUQ
Inflammation of gallbladder
(cholecystitis)
Courvoisier's law
ABDOMINAL EXAMINATION
MURPHY’S SIGN
73. ABDOMINAL EXAMINATION
PALPATION OF THE LIVER
1. Start palpating in the right iliac fossa
2. Ask the patient to take a deep breath in
3. Move your hand progressively further up the abdomen
4. Try to feel the liver edge
85. ABDOMINAL EXAMINATION
PALPATION OF THE SPLEEN
1. Roll the patient towards you
2. Palpate with your left hand while using your right hand to
press forward on the patient’s lower ribs from behind
3. Feel along the costal margin
88. Laboratory Tests
• CBC : WBC↓, Plt↓
• Elevated serum enzyme tests usually indicate liver injury earlier than do
other indicators of liver function.
• The key enzymes are ALT and AST, which are present in hepatocytes.
• In most cases of liver damage, there are parallel increases in ALT and
AST. The most dramatic rise is seen in cases of acute hepatocellular
injury: viral hepatitis, hypoxic or ischemic injury, and acute toxic injury.
• The liver’s synthetic capacity is reflected in measures of serum protein
levels and prothrombin time (i.e., synthesis of coagulation factors):
albumin↓, A/G ratio reversing, prothrombin time↑
• Serum bilirubin, γ-glutamyltransferase (GGT), and alkaline phosphatase
(ALP) measure hepatic excretory function.
• Markers of viral hepatitis (e.g. HBV, HCV, HDV)
90. Images
Ultrasound and Doppler: cirrhosis, splenomegaly, ascites,
thrombosis and occlusion of the portal, superior mesenteric
and splenic vein, enlargement of portal vein>13mm and of
splenic vein>10mm
97. Bile production
⚫ The secretion of bile, approximately 600 to 1200 mL daily, is one of
the many functions of the liver.
⚫ Bile functions in the digestion and absorption of fats and fat-soluble
vitamins from the intestine, and it serves as a vehicle for excretion of
bilirubin, excess cholesterol, and metabolic end-products that cannot
be eliminated in the urine.
⚫ Bile contains water, electrolytes, bile salts, bilirubin, cholesterol, and
certain products of organic metabolism.
⚫ Approximately 94% of bile salts that enter the intestine are
reabsorbed into the portal circulation by an active transport process
that takes place in the distal ileum. From the portal circulation, the
bile salts pass into the liver, where they are recycled. Normally, bile
salts travel this entire circuit approximately 18 times before being
expelled in the feces.
⚫ This system for recirculation of bile is called the enterohepatic
circulation.
98. Jaundice (icterus)
• Jaundice (i.e., icterus), which results from an abnormally high
accumulation of bilirubin in the blood, is a yellowish discoloration
to the skin and deep tissues.
• Jaundice becomes evident when the serum bilirubin levels rise
above 2.0 to 2.5 mg/dL.
• Bilirubin has a special affinity for elastic tissue. The sclera of the
eye, which contains considerable elastic fibers, usually is one of
the first structures in which jaundice can be detected.
100. Bilirubin elimination
⚫ Bilirubin is formed during the breakdown of senescent red blood
cells.
⚫ In the process of degradation, the heme portion of the hemoglobin
molecule is oxidized to form biliverdin, which is then converted to
free bilirubin.
⚫ Free bilirubin, which is insoluble in plasma, is transported in the
blood attached to plasma albumin. Even when it is bound to
albumin, this bilirubin is still called free bilirubin.
⚫ As it passes through the liver, free bilirubin is released from the
albumin carrier molecule and moved into the hepatocytes. Inside the
hepatocytes, free bilirubin is converted to conjugated bilirubin,
making it soluble in bile.
⚫ Conjugated bilirubin is secreted as a constituent of bile, and in this
form it passes through the bile ducts into the small intestine.
101. Bilirubin elimination
⚫ In the intestine, approximately one half of the bilirubin is converted
into a highly soluble substance called urobilinogen by the intestinal
flora.
⚫ Urobilinogen is either absorbed into the portal circulation or excreted
in the feces.
⚫ Most of the urobilinogen that is absorbed is returned to the liver to
be re-excreted into the bile.
⚫ A small amount of urobilinogen, approximately 5%, is absorbed into
the general circulation and then excreted by the kidneys.
⚫ Usually, only a small amount of bilirubin (0.1 to 1.2 mg/dL) is found
in the blood. Laboratory measurements of bilirubin usually measure
the free and the conjugated bilirubin as well as the total bilirubin.
These are reported as the direct (conjugated) bilirubin and the
indirect (unconjugated or free) bilirubin.
102. Causes of jaundice
• 4 major causes of jaundice are:
– Excessive destruction of RBCs
– Impaired uptake of bilirubin by hepatocytes
– Decreased conjugation of bilirubin
– Obstruction of bile flow in the canaliculi of the
hepatic lobules or in the intrahepatic or extrahepatic
bile ducts.
• From an anatomic standpoint, jaundice can be
categorized as:
– Prehepatic /flavin icterus/
– Intrahepatic /rubin icterus/
– Posthepatic /verdin icterus or melas icterus/
103. Causes
• Prehepatic (Excessive RBC destruction)
– Hemolytic blood transfusion reaction
– Hereditary disorders of the red blood cell
– Sickle cell anemia
– Thalassemia
– Spherocytosis
– Acquired hemolytic disorders
– Hemolytic disease of the newborn
– Autoimmune hemolytic anemias
UGT (Uridine diphosphate
glucuronosyltransferase) deficiencies
– Gilbert syndrome
– Crigler-Najjar syndromes (I and II)
• Intrahepatic
– Decreased bilirubin uptake by the
liver
– Decreased conjugation of
bilirubin
– Hepatocellular liver damage
– Hepatitis
– Cirrhosis
– Cancer of the liver
– Drug-induced cholestasis
• Posthepatic (Obstruction of bile
flow)
– Structural disorders of the bile
duct
– Cholelithiasis
– Congenital atresia of the
extrahepatic bile ducts
– Bile duct obstruction caused by
tumors
104. Manifestations
• Prehepatic jaundice is:
– Mild jaundice
– The unconjugated bilirubin is elevated
– The stools are of normal color
– There is no bilirubin in the urine
• Intrahepatic jaundice usually interferes with all phases of bilirubin
metabolism—uptake, conjugation, and excretion:
– Both conjugated and unconjugated bilirubin are elevated
– The urine often is dark because of the presence of bilirubin
• Posthepatic or obstructive jaundice, also called cholestatic jaundice, occurs
when bile flow is obstructed between the liver and the intestine:
– Conjugated bilirubin levels usually are elevated
– The stools are clay colored because of the lack of bilirubin in the bile
– The urine is dark
– The levels of serum alkaline phosphatase are markedly elevated
– The aminotransferase levels are slightly increased
– Blood levels of bile acids often are elevated in obstructive jaundice. As
the bile acids accumulate in the blood, pruritus develops.
105. Child-Pugh classification of liver function
Child-Pugh classification is a scoring system developed
for evaluating surgical risk in patients with cirrhosis.
Child’ grade 1 point 2 points 3 points
Serum bilirubin (umol/L) <34.2 34.2-51.3 >51.3
Albumin (g/l) >35 30-35 <30
Prothrombin (s' prolonged) 1-4 4-6 >6
Ascites absent slight moderate
Encephalopathy none
none or
minimal
coma