Acute pancreatitis.
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Acute pancreatitis.

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Acute pancreatitis. Acute pancreatitis. Presentation Transcript

  • Chief of hospital surgery Lection for students of 5 course Acute p ancreatitis .
  • Anatomy of pancreac. I — ventriculus; 2 — a. et v. gastrica sinistra; 3 — lien; 4 — lig. phrenicolienale; 5 — lig. gastrolienale; 6 — corpus pancreatis; 7 — cauda pancreatis; 8 — ния mesocolon transversum; 9 — flexura duodenojejunalis; 10 — caput pancreatis;
  • Anatomy of pancreac. 1 — v. cava inferior; 2 — aorta abdominalis; 3 — truncus coeliacus; 4 — a. gastrica sinistra; 5 — a. lienalis; 6 — v. lienalis; 7 — v. mesenterica inferior; 8 — a. mesenterica superior; 9 — v. mesenterica superior; 10 — caput pancreatis; 11 — duodenum; 12 — a. gastroduodenalis; 13 — a. hepatica communis; 14 — a. hepatica propria; 15 — ductus choledochus; 16 — a. gastrica dextra; 17 — v. portae; 18 — ductus cysticus; 19 — ductus hepaticus communis.
  • Acute pancreatitis
    • is a aseptic inflammatory process of the pancreas , caused of autolysis in consequence of pathology activation of photolytic enzymes
  • Statistics
    • Acute Pancreatitis is 15 - 20% part of all acute surgical diseases organ to abdominal cavity. On Ukraine frequency acute pancreatitis forms from 10 before 40 on 10000 populations. The General mortality under acute pancreatitis from 15-25%, to 85%.
  • Risk Factors for Acute Pancreatitis
    • Gallstones Choledocholithiasis
    • Chronic alcohol consumption
    • Congenital anomalies
    • Drug-induced hypertriglyceridemia (triglycerides greater than 1,000 mg per dL [11.30 mmol per L])
    • Anatomic or functional disorders (e.g., pancreas divisum, sphincter of Oddi dysfunction)Autoimmune (e.g., systemic lupus erythematosus)
    • Hypercalcemia, hyperparathyroidismHypothermiaIdiopathicInfections (e.g., viral, bacterial, parasitic, fungal)
    • Pancreatic or ampullary tumors
    • Traumatic or postprocedure (e.g., endoscopic retrograde cholangiopancreatography or after abdominal surgery)
    • Vascular (e.g., vasculitis)
  • Pathogenesis
    • Acute pancreatitis may occur when factors involved in maintaining cellular homeostasis are out of balance. The initiating event may be anything that injures the acinar cell and impairs the secretion of zymogen granules, such as alcohol use, gallstones, and certain drugs. In addition, acute pancreatitis can develop when ductal cell injury leads to delayed or absent enzymatic secretion, such as with the CFTR gene mutation. The mechanisms by which alcohol or gallstones cause destruction to pancreatic acinar cells are not currently known.
  • Pathogenesis
    • Once a cellular injury pattern has been initiated, cellular membrane trafficking becomes chaotic, with the following deleterious effects: (1) lysosomal and zymogen granule compartments fuse, enabling activation of trypsinogen to trypsin; (2) intracellular trypsin triggers the entire zymogen activation cascade; and (3) secretory vesicles are extruded across the basolateral membrane into the interstitium, where molecular fragments act as chemoattractants for inflammatory cells. Activated neutrophils then exacerbate the problem by releasing superoxide (the respiratory burst) or proteolytic enzymes (cathepsins B, D, and G; collagenase; and elastase). Finally, macrophages release cytokines that further mediate local (and, in severe cases, systemic) inflammatory responses. The early mediators defined to date are tumor necrosis factor–alpha, interleukin-6, and interleukin-8.
  • Pathogenesis
    • These mediators of inflammation cause an increase pancreatic vascular permeability, leading to hemorrhage, edema, and eventually pancreatic necrosis. As the mediators are excreted into the circulation, systemic complications can arise, such as bacteremia due to gut flora translocation, acute respiratory distress syndrome, pleural effusions, gastrointestinal hemorrhage, and renal failure. Eventually, the mediators of inflammation can become so overwhelming to the body that hemodynamic instability and death ensue.
  • Symptoms
    • Acute pancreatitis usually begins with pain in the upper abdomen that may last for a few days. The pain may be severe and may become constant—just in the abdomen—or it may reach to the back and other areas. It may be sudden and intense or begin as a mild pain that gets worse when food is eaten. Someone with acute pancreatitis often looks and feels very sick. Other symptoms may include
    • swollen and tender abdomen
    • nausea
    • vomiting
    • fever
    • rapid pulse
    • Severe cases may cause dehydration and low blood pressure. The heart, lungs, or kidneys may fail. If bleeding occurs in the pancreas, shock and sometimes even death follow.
  • Main clinic syndromes
    • Pain-syndrome
    • Dyspepsia
    • Intoxication
    • Mechanical jaundice
    • Disturbance of hemodynamic
    • Paralytic of bowel
  • Physical examination
    • The following physical examination findings vary with the severity of the disease.
      • Fever (76%) and tachycardia (65%) are common abnormal vital signs.
      • Abdominal tenderness, muscular guarding (68%), and distension (65%) are observed in most patients. Bowel sounds are often hypoactive due to gastric and transverse colonic ileus. Guarding tends to be more pronounced in the upper abdomen.
      • A minority of patients exhibit jaundice (28%).
      • Some patients experience dyspnea (10%), which may be caused by irritation of the diaphragm (resulting from inflammation), pleural effusion, or a more serious condition, such as acute respiratory distress syndrome.
      • In severe cases, hemodynamic instability is evident (10%) and hematemesis or melena sometimes develops (5%). In addition, patients with severe acute pancreatitis are often pale, diaphoretic, and listless.
  • Physical examination
    • A few uncommon physical findings are associated with severe necrotizing pancreatitis.
      • The Cullen sign is a bluish discoloration around the umbilicus resulting from hemoperitoneum.
      • The Grey-Turner sign is a reddish-brown discoloration along the flanks resulting from retroperitoneal blood dissecting along tissue planes. More commonly, patients may have a ruddy erythema in the flanks secondary to extravasated pancreatic exudate.
      • Erythematous skin nodules may result from focal subcutaneous fat necrosis. These are usually not more than 1 cm in size and are typically located on extensor skin surfaces. In addition, polyarthritis is occasionally seen.
  • Complications
    • Acute pancreatitis can cause breathing problems. Many people develop hypoxia, which means that cells and tissues are not receiving enough oxygen. Doctors treat hypoxia by giving oxygen through a face mask. Despite receiving oxygen, some people still experience lung failure and require a ventilator.
    • Sometimes a person cannot stop vomiting and needs to have a tube placed in the stomach to remove fluid and air. In mild cases, a person may not eat for 3 or 4 days and instead may receive fluids and pain relievers through an intravenous line.
  • Diagnostic
    • Abdominal ultrasonography
    • Contrast-enhanced computed tomography
    • Endoscopic ultrasonography
    • Laparoscopy
    • Magnetic resonance cholangiopancreatography
    • C ontrast-enhanced computed tomography
  • Diagnostic
    • Abdominal ultrasonography
      • This is the most useful initial test in determining the etiology of pancreatitis and is the technique of choice for detecting gallstones.
      • In the setting of acute pancreatitis, sensitivity is reduced to 70-80%. In addition, the ability to identify choledocholithiasis is limited.
      • Ultrasonography cannot measure the severity of disease.
  • Diagnostic
    • Abdominal CT scanning
      • This is generally not indicated for patients with mild pancreatitis unless a pancreatic tumor is suspected (usually in elderly patients).
    • CT scanning is always indicated in patients with severe acute pancreatitis and is the imaging study of choice for assessing complications. Scans are seldom needed within the first 72 hours after symptom onset unless the diagnosis is uncertain, because inflammatory changes are often not radiographically present until this time
  • Diagnostic
    • Endoscopic ultrasonography
      • Endoscopic ultrasonography (EUS) is an endoscopic procedure that allows a high-frequency ultrasound transducer to be inserted into the gastrointestinal tract to visualize the pancreas and the biliary tract. This study allows a more detailed image to be obtained than with transcutaneous ultrasonography because the high-frequency transducer can be introduced directly adjacent to the pancreas.
      • EUS is often helpful in evaluating the cause of severe pancreatitis, particularly microlithiasis and biliary sludge, and can help identify periampullary lesions better than other imaging modalities.
      • Its principal role in the evaluation of acute pancreatitis is the detection of microlithiasis and periampullary lesions not easily revealed by other methods.
  • Treatment
    • The treatment of acute pancreatitis conservative
    • Operative treatment if patients have c omplications
  • Conservative treatment
    • The fight with pain
    • Correcting hemodynamic.
    • The Inhibitor of function of pancreas
    • The preventive maintenance to festering infection
    • Inactivation of pancreatic enzymes in blood
    • Correcting of the metabolism
    • Detoxic therapy
    • Identical protein-energy ensuring the organism
    • Antioxid therapy
  • Introduce to operative treatment
    • non effective conservative treatment 2-3 days
    • septic c omplications
    • peritonitis
    • increase of intoxication
    • increase of mechanical jaundice.
  • Methods of operation
    • Abdominization of pancreas
    • Marsoopylyzation
    • Drainage
    • Correction of mechanical jaundice
    • Treatment of peritonitis
  • Operative treatment Abdominization of pancreas
  • Complications
    • Acute cyst of pancreas
    • Fistools of pancreas
    • Abscess and flegmons retroperitoneum
    • Perforation of cavity organs
    • Arosive bleeding
    • Abscess of omentum bags
    • Trombosis of vessels