This document provides an overview of haemopoiesis, blood malignancies, coagulation, and platelet function defects. It describes the normal sites and regulation of haemopoiesis, including the roles of stem cells, growth factors, and transcription factors. It also covers the types and characteristics of common blood malignancies like leukemia and lymphoma. Furthermore, it outlines the coagulation cascade and fibrinolysis system. Finally, it discusses causes and features of disorders affecting platelet function and coagulation.
Paroxysmal Nocturnal Hemoglobinuria (PNH) - A Pathologic SurveyJackson Reynolds
Slides from a Microsoft PowerPoint® presentation I delivered covering the basic clinical presentation, diagnosis, pathogenesis/pathophysiology, treatment, and prognosis of paroxysmal nocturnal hemoglobinuria (PNH). This presentation was given on October 3, 2018 at the Medical College of Georgia, Augusta Campus to an audience of clinical pathologists and second-year MD candidates.
Acquired hemophilia is a rare disorder and if missed can cost lives. This presentation has been prepared keeping in view the non hematologist health care workers to broaden their index of suspicion and increase their awareness. The target people are medical residents those who work in ER and ICUs.
Pancytopenia is a reduction in the number of RBC, WBC and platelet. It's a combination of anaemia, leukopenia and thrombocytopenia. Pancytopenia caused by Decreased bone marrow function and increased peripheral destruction. diseases are diagnosed by physical examination, complete blood counting, peripheral smear examination, bone marrow examination and other special methods. Treatment to pancytopenia is treated to anaemia, thrombocytopenia and leukopenia
Paroxysmal Nocturnal Hemoglobinuria (PNH) - A Pathologic SurveyJackson Reynolds
Slides from a Microsoft PowerPoint® presentation I delivered covering the basic clinical presentation, diagnosis, pathogenesis/pathophysiology, treatment, and prognosis of paroxysmal nocturnal hemoglobinuria (PNH). This presentation was given on October 3, 2018 at the Medical College of Georgia, Augusta Campus to an audience of clinical pathologists and second-year MD candidates.
Acquired hemophilia is a rare disorder and if missed can cost lives. This presentation has been prepared keeping in view the non hematologist health care workers to broaden their index of suspicion and increase their awareness. The target people are medical residents those who work in ER and ICUs.
Pancytopenia is a reduction in the number of RBC, WBC and platelet. It's a combination of anaemia, leukopenia and thrombocytopenia. Pancytopenia caused by Decreased bone marrow function and increased peripheral destruction. diseases are diagnosed by physical examination, complete blood counting, peripheral smear examination, bone marrow examination and other special methods. Treatment to pancytopenia is treated to anaemia, thrombocytopenia and leukopenia
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Blood coagulation cascade. Brief outline of blood clotting cascade with information on tests. Over view for medical laboratory scientist program and for ASCP certification test
Hematopoiesis: Origin and development of blood cellsVarun Singh
The process of hematopoiesis, its microenvironment and regulators. the process of erythropoiesis, myelopoiesis and megakaryopoiesis and their regulators with illustrated figures.
Disease of older males.
The Philadelphia chromosome - BCR-ABL gene and it’s Tyrosine kinase protein – central to the pathogenesis.
Occurs in 3 phases
Imatinib has revolutionized the management
This is a powerpoint explaining on the basics of neoplasia by Dr Libin Babu Cherian, MD, DNB (pathology), DM (oncopathology). It includes mechanisms of cancer evolutions, metastasis, radiation induced carcinogenes, virus induced carcinogenesis and paraneoplastic syndromes
Approach to Pancytopenia with cases.pptxYogeetaTanty1
Approach to pancytopenia with case based discussion and brief details regarding each condition. Causes of pancytopenia. Details of congenital causes of aplastic anemia.
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
263778731218 Abortion Clinic /Pills In Harare ,sisternakatoto
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Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
Knee anatomy and clinical tests 2024.pdfvimalpl1234
This includes all relevant anatomy and clinical tests compiled from standard textbooks, Campbell,netter etc..It is comprehensive and best suited for orthopaedicians and orthopaedic residents.
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
3. Sites of Haemopoiesis
• Yolk sac
• Liver and spleen
• Bone marrow
– Gradual replacement
of active (red) marrow
by inactive (fatty)
tissue
– Expansion can occur
during increased need
for cell production
10. Haemopoietic growth factors
• Glycoprotein hormones
• GM-CSF
• Granulocyte-Macrophage colony stimulating factor
• G-CSF
Granulocyte colony stimulating factor
• M-CSF
• Macrophage colony stimulating factor
• Erythropoietin(kidney)
• Erythropoiesis stimulating hormone
(These factors have the capacity to stimulate the proliferation of their target
progenitor cells when used as a sole source of stimulation)
• Thrombopoietin(liver)
• Stimulates megakaryopoiesis
11. Haemopoietic growth factors cont.
• Cytokines
•
•
•
•
•
•
•
IL 1 (Interleukin 1)
IL 3
IL 5
IL 6
TNF
SCF (Stem cell factor, also known as kit-ligand)
TGF-β/IFN-γ-Negative effect
13. Erythropoiesis and erythrocytes
• Lifespan – 120 days
• Non nucleated
• Biconcave disc
• Production regulated by Epo
• Needs Fe, B12, folate & other
elements for development
18. Thrombopoiesis
• Platelet play a major
role in primary
hemostasis
• Life span 7-10 days
• Production, fragmentati
on of cytoplasm
• Megakaryocytes
undergoes endomitotic
division
19. Summary
• Normal haemopoiesis is necessary for the
survival
• It is under the control of multiple factors
• Normal bone marrow environment is
necessary for normal haemopoiesis
• Decreased production results in cytopenias
24. Leukemia
• Acute leukemias: rapid onset, rapid death if
treatment is not successful
• Chronic leukemias: natural history measured
in years, even without initial treatment
25. Two-hit model of leukemogenesis
Loss of function of
transcription factors needed
for differentiation
eg. FLT3, c-KIT mutations
N- and K-RAS mutations
BCR-ABL
TEL-PDGF R
eg. AML1-ETO
CBF -SMMHC
PML-RAR
differentiation
block
Gain of function mutations of
tyrosine kinases
+
enhanced
proliferation
Acute
Leukemia
32. Classification of acute leukemias
ALL
AML
• mainly children
• curable in 85% of
children
• curable in minority of
adults
• mainly adults
• curable in minority of
adults
33. Clincal manifestations
• symptoms due to:
– marrow failure
– tissue infiltration
– leukostasis
– constitutional symptoms
– Others- DIC (acute promyelocytic leukaemia)
• usually short duration of symptoms
35. Infiltration of tissues/organs
• enlargement of liver, spleen, lymph nodes
• gum hypertrophy
• bone pain
• other organs: CNS, skin, testis, any organ
38. Principles of treatment
• combination chemotherapy
– first goal is complete remission
– further Rx to prevent relapse
• supportive medical care
– transfusions, antibiotics, nutrition
• psychosocial support
– patient and family
39. CML
•
•
•
•
Clonal disorder of pluripotent stem cell
Philadelphia chromasome t(9,22)
Enhanced thyrosine kinase activity(TK)
Clnical features: due to
hypermetabolism, splenomegaly,BMF,leukosta
sis
Treatment-TKI
46. HEMOSTASIS
Definition
• Hemostasis: drives from the Greek
meaning “The stoppage of blood flow”.
• Components involved in haemostasis
*Blood vessel
*Platelets
*Coagulation factors
*Coagulation inhibitors
*Fibrinolysis