Podcast
Questions and Answers
Which of the following clinical features of anemias results as a lack of oxygen to the heart thus causing the heart to increase its workload?
Which of the following clinical features of anemias results as a lack of oxygen to the heart thus causing the heart to increase its workload?
During anemic conditions due to blood loss. Which of the following pairs are correct?
During anemic conditions due to blood loss. Which of the following pairs are correct?
Which of the following is evidence of hemolysis that involves a fat soluable substance from heme that causes anemia as a result of increased rate of destruction of RBCs?
Which of the following is evidence of hemolysis that involves a fat soluable substance from heme that causes anemia as a result of increased rate of destruction of RBCs?
which of the following are a hemolytic anemia causing disorder due to intrinsic causes that involve a spherical shaped red cells due to alterations in permeability of the cell membrane (spectrin protein) that is not often apparent until late adulthood. Characteristic features are:
Hemolysis and anemia
Hemolytic jaundice and pigment gall stones
Erythroid hyperplasia of the bone marrow
which of the following are a hemolytic anemia causing disorder due to intrinsic causes that involve a spherical shaped red cells due to alterations in permeability of the cell membrane (spectrin protein) that is not often apparent until late adulthood. Characteristic features are: Hemolysis and anemia Hemolytic jaundice and pigment gall stones Erythroid hyperplasia of the bone marrow
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which of the following are a hemolytic anemia causing disorder due to intrinsic causes that involve The HbS gene which is along slender crystalline mass that distorts red cell development. Results in decreased intravascular oxygen levels, increased hypoxia, sickling, increased RBC destruction.
which of the following are a hemolytic anemia causing disorder due to intrinsic causes that involve The HbS gene which is along slender crystalline mass that distorts red cell development. Results in decreased intravascular oxygen levels, increased hypoxia, sickling, increased RBC destruction.
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In the sickle cell trait, the heterozygous Hgb is usually asymptomatic except when exposed to low oxygen.
In the sickle cell trait, the heterozygous Hgb is usually asymptomatic except when exposed to low oxygen.
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Which of the following disorders of intrinsic origin leading to hemolytic anemia result in thinner and more fragile red blood cells causing a shorter lifespan?
Which of the following disorders of intrinsic origin leading to hemolytic anemia result in thinner and more fragile red blood cells causing a shorter lifespan?
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The term hemochromatosis has which meaning and is associated with which disorder of the blood?
The term hemochromatosis has which meaning and is associated with which disorder of the blood?
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Cooleys anemia is in reference to excessive hemolysis and homozygous characteristics associated with which intrinsic disorder of the blood?
Cooleys anemia is in reference to excessive hemolysis and homozygous characteristics associated with which intrinsic disorder of the blood?
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Hemosiderous involves storage of iron in the kuffer cells and cells LOSE function.
Hemosiderous involves storage of iron in the kuffer cells and cells LOSE function.
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Hemochromatosis is a result of iron stored in hepatocytes and cells still remain functional.
Hemochromatosis is a result of iron stored in hepatocytes and cells still remain functional.
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Hemochromatosis associated with Beta thalassemias results in significant organ damage in which the organ loses function due to iron deposit in the perychymal cells which leads to severe hypoxia secondary to decreased hemoglobin in the blood cells.
Hemochromatosis associated with Beta thalassemias results in significant organ damage in which the organ loses function due to iron deposit in the perychymal cells which leads to severe hypoxia secondary to decreased hemoglobin in the blood cells.
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In alpha thalassemia which of the following syndromes develops as a result of 1 defective allele?
In alpha thalassemia which of the following syndromes develops as a result of 1 defective allele?
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In alpha thalassemia which of the following syndromes develops as a result of 2 defective allele?
In alpha thalassemia which of the following syndromes develops as a result of 2 defective allele?
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In alpha thalassemia which of the following syndromes develops as a result of 3 defective allele?
In alpha thalassemia which of the following syndromes develops as a result of 3 defective allele?
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Which of the following is associated with the disease that causes hemolytic anemia due to intrinsic causes which is a deficiency of the enzyme in the presence of certain drugs?
Which of the following is associated with the disease that causes hemolytic anemia due to intrinsic causes which is a deficiency of the enzyme in the presence of certain drugs?
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Which of the following are hemolytic anemias due to extra erythrocyte causes aka extrinsic hemolytic anemias
Which of the following are hemolytic anemias due to extra erythrocyte causes aka extrinsic hemolytic anemias
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Which of the following anemias due to decreased RBC production is the most common?
Which of the following anemias due to decreased RBC production is the most common?
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Which of the following explains spooning of the nails and which type of anemia is it associated with?
Which of the following explains spooning of the nails and which type of anemia is it associated with?
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Which of the following results in red blood cells being larger than normal while the number of mature RBC decreases.
Which of the following results in red blood cells being larger than normal while the number of mature RBC decreases.
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Which of the following pathological characteristics best characterizes Megaloblastic anemia?
Which of the following pathological characteristics best characterizes Megaloblastic anemia?
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In regard to Megaloblastic anemias, pernicious anemia results as a lack of B12 leading to B12 deficiency in the systemic blood circulation for use in RBC production.
In regard to Megaloblastic anemias, pernicious anemia results as a lack of B12 leading to B12 deficiency in the systemic blood circulation for use in RBC production.
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Which of the following forms of polycythemias results in reduction of plasma volume without impacting the RBC count?
Which of the following forms of polycythemias results in reduction of plasma volume without impacting the RBC count?
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A compensation for hypoxia in other words increased production of RBC the mechanism for absolute polycythemias. Which of the following is NOT a factor for absolute polycythemia?
A compensation for hypoxia in other words increased production of RBC the mechanism for absolute polycythemias. Which of the following is NOT a factor for absolute polycythemia?
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Which of the following in a disease of unknown cause in which all elements of blood are increased in concentration and there is uncontrolled production of bone marrow elements?
Which of the following in a disease of unknown cause in which all elements of blood are increased in concentration and there is uncontrolled production of bone marrow elements?
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Extra red blood cells in polycythemia Vera DO NOT carry oxygen and increase the risk of blood clots.
Extra red blood cells in polycythemia Vera DO NOT carry oxygen and increase the risk of blood clots.
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Match the following pathological components of polycythemia Vera:
Match the following pathological components of polycythemia Vera:
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1/3 of deaths are due thrombotic manifestations, 1/3 due to leukemia, 1/3 due to myelofibrosis in which condition?
1/3 of deaths are due thrombotic manifestations, 1/3 due to leukemia, 1/3 due to myelofibrosis in which condition?
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Auers rods are associated with which type of leukemia?
Auers rods are associated with which type of leukemia?
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Which of the following are true of acute lymphoblastic leukemias?
Which of the following are true of acute lymphoblastic leukemias?
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Acute myeloblastic leukemia has which of the following characteristics:
Acute myeloblastic leukemia has which of the following characteristics:
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Which of the following are considerably less rapidly progressive, have anemia, and organ enlargement?
Which of the following are considerably less rapidly progressive, have anemia, and organ enlargement?
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Which of the following are characteristic of chronic myelocytic leukemia?
Which of the following are characteristic of chronic myelocytic leukemia?
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Please match the following
Please match the following
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Which of the following leukemia types results in end stage blast cell?
Which of the following leukemia types results in end stage blast cell?
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Reed sternberg cell aka owl eyes is associated with?
Reed sternberg cell aka owl eyes is associated with?
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Please match the following Classifications of Hodgkin's disease
Please match the following Classifications of Hodgkin's disease
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Which of the following is neoplastic proliferation of lymphoid tissue but without reed sternberg cells?
Which of the following is neoplastic proliferation of lymphoid tissue but without reed sternberg cells?
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Burkitts lymphoma accounts for 85% of all lymphomas.
Burkitts lymphoma accounts for 85% of all lymphomas.
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Immunoglobulin is usually of IgG variety 25% and IgA 60% in multiple myeloma with filled in lesions in radiograph.
Immunoglobulin is usually of IgG variety 25% and IgA 60% in multiple myeloma with filled in lesions in radiograph.
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Coagulation disorders
Coagulation disorders
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Please match the following immunologic destructive diseases
Please match the following immunologic destructive diseases
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Which aneurysm is considered a saccular aneurysm and is commonly found in the circle of Willis?
Which aneurysm is considered a saccular aneurysm and is commonly found in the circle of Willis?
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What is the most common management for A-V fistulas?
What is the most common management for A-V fistulas?
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What characteristic distinguishes cavernous hemangioma from other types?
What characteristic distinguishes cavernous hemangioma from other types?
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In Marfan syndrome, what is a primary cardiovascular feature?
In Marfan syndrome, what is a primary cardiovascular feature?
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What condition is indicated by rib knotting in a patient's imaging?
What condition is indicated by rib knotting in a patient's imaging?
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Which feature is common in post ductal coarctation of the aorta?
Which feature is common in post ductal coarctation of the aorta?
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Which congenital condition is characterized by severe narrowing of the aorta proximally to the ductus?
Which congenital condition is characterized by severe narrowing of the aorta proximally to the ductus?
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In Sturge-Weber syndrome, what is a significant characteristic of the hemangioma?
In Sturge-Weber syndrome, what is a significant characteristic of the hemangioma?
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Which layer of the heart is primarily affected in Marfan syndrome?
Which layer of the heart is primarily affected in Marfan syndrome?
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What is the most common genetic inheritance pattern for Ehlers-Danlos syndrome?
What is the most common genetic inheritance pattern for Ehlers-Danlos syndrome?
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Which type of arteriosclerosis involves accumulating abnormal materials in the intima of arterioles?
Which type of arteriosclerosis involves accumulating abnormal materials in the intima of arterioles?
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What is another name for Hurler's syndrome?
What is another name for Hurler's syndrome?
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What condition is primarily characterized by the formation of fatty streaks and fibrous plaques in arteries?
What condition is primarily characterized by the formation of fatty streaks and fibrous plaques in arteries?
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Which of the following poses the highest risk factor for the development of atherosclerosis?
Which of the following poses the highest risk factor for the development of atherosclerosis?
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In relation to atherosclerosis, what effect does regular physical exercise have on the vasculature?
In relation to atherosclerosis, what effect does regular physical exercise have on the vasculature?
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Which complication of systemic hypertension is specifically associated with changes in the retina?
Which complication of systemic hypertension is specifically associated with changes in the retina?
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match the following shapes and forms of aneurysm:
match the following shapes and forms of aneurysm:
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Match the following causes of aneurysm
Match the following causes of aneurysm
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What is the term for a group of diseases characterized by inflammatory changes in the walls of blood vessels?
What is the term for a group of diseases characterized by inflammatory changes in the walls of blood vessels?
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Which condition is characterized by inflammatory changes primarily affecting the aorta?
Which condition is characterized by inflammatory changes primarily affecting the aorta?
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What antibody is likely present at the site of lesions in polyarteritis nodosa (PAN)?
What antibody is likely present at the site of lesions in polyarteritis nodosa (PAN)?
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Which type of hemorrhages is commonly associated with polyarteritis nodosa (PAN)?
Which type of hemorrhages is commonly associated with polyarteritis nodosa (PAN)?
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Wegener's granulomatosis is often fatal without treatment due to necrotizing granulomatosis affecting which body parts?
Wegener's granulomatosis is often fatal without treatment due to necrotizing granulomatosis affecting which body parts?
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Which disease primarily affects the elderly and is associated with headache onset due to occlusion of the superficial temporal artery?
Which disease primarily affects the elderly and is associated with headache onset due to occlusion of the superficial temporal artery?
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What is the commonly used alternative name for thromboangitis obliterans?
What is the commonly used alternative name for thromboangitis obliterans?
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Takayasu's arteritis primarily affects which demographic?
Takayasu's arteritis primarily affects which demographic?
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What is the most common cause of left ventricular failure?
What is the most common cause of left ventricular failure?
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What type of heart failure is characterized by the heart's inability to meet the metabolic demands of tissues, despite pumping more blood than usual?
What type of heart failure is characterized by the heart's inability to meet the metabolic demands of tissues, despite pumping more blood than usual?
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Which condition most commonly causes right ventricular failure?
Which condition most commonly causes right ventricular failure?
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Which statement best describes hypertensive heart disease?
Which statement best describes hypertensive heart disease?
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What is backward failure in heart conditions primarily characterized by?
What is backward failure in heart conditions primarily characterized by?
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How is congestive heart failure typically described?
How is congestive heart failure typically described?
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What typically causes low output failure?
What typically causes low output failure?
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Which condition might lead to left ventricular failure as a secondary effect?
Which condition might lead to left ventricular failure as a secondary effect?
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What is the most common cause of left ventricular failure?
What is the most common cause of left ventricular failure?
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What characterizes hypertensive heart disease?
What characterizes hypertensive heart disease?
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In congestive heart failure, what typically results from a faulty pump?
In congestive heart failure, what typically results from a faulty pump?
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Which type of heart failure is characterized by a failure to deliver adequate blood to tissues?
Which type of heart failure is characterized by a failure to deliver adequate blood to tissues?
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What is the most common cause of right ventricular failure?
What is the most common cause of right ventricular failure?
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In left ventricular failure, what is typically a systemic effect observed?
In left ventricular failure, what is typically a systemic effect observed?
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What type of heart change is described as intrinsic dilation?
What type of heart change is described as intrinsic dilation?
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Which disorder is commonly linked with high output failure?
Which disorder is commonly linked with high output failure?
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Match the following congenital heart defects with their respective descriptions:
Match the following congenital heart defects with their respective descriptions:
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Match the types of cardiomyopathy with their characteristics:
Match the types of cardiomyopathy with their characteristics:
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Match the following features with their associated congenital heart condition:
Match the following features with their associated congenital heart condition:
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Match the following terms with their respective associations:
Match the following terms with their respective associations:
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Match the following conditions with their corresponding effects or associations:
Match the following conditions with their corresponding effects or associations:
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Match the types of angina with their characteristics:
Match the types of angina with their characteristics:
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Match the following myocardial infarction complications with their descriptions:
Match the following myocardial infarction complications with their descriptions:
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Match the following heart conditions with their causes or associations:
Match the following heart conditions with their causes or associations:
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Match the following cardiac symptoms with their classifications:
Match the following cardiac symptoms with their classifications:
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Match the following heart disease types with their features:
Match the following heart disease types with their features:
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Match the laboratory markers with their significance in heart conditions:
Match the laboratory markers with their significance in heart conditions:
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Match the following types of heart failure with their descriptions:
Match the following types of heart failure with their descriptions:
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Which condition is characterized by verrucous vegetations on heart valves?
Which condition is characterized by verrucous vegetations on heart valves?
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Mitral valve prolapse is most commonly associated with which syndrome?
Mitral valve prolapse is most commonly associated with which syndrome?
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Dilated cardiomyopathy is primarily characterized by which of the following?
Dilated cardiomyopathy is primarily characterized by which of the following?
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A left-to-right shunt without cyanosis resulting from a ventricular septal defect is known as what?
A left-to-right shunt without cyanosis resulting from a ventricular septal defect is known as what?
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Which of the following is NOT a characteristic feature of Tetralogy of Fallot?
Which of the following is NOT a characteristic feature of Tetralogy of Fallot?
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What condition most commonly leads to acute right ventricular failure due to forward failure mechanism?
What condition most commonly leads to acute right ventricular failure due to forward failure mechanism?
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Which complication is the leading immediate cause of death after a myocardial infarction?
Which complication is the leading immediate cause of death after a myocardial infarction?
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Chronic right ventricular failure due to backward failure can lead to which of the following conditions?
Chronic right ventricular failure due to backward failure can lead to which of the following conditions?
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In stable angina pectoris, when do symptoms typically occur?
In stable angina pectoris, when do symptoms typically occur?
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Which laboratory marker is known to rise first and remain elevated for 7–10 days in the context of myocardial infarction?
Which laboratory marker is known to rise first and remain elevated for 7–10 days in the context of myocardial infarction?
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What is the major characteristic of chronic ischemic heart disease?
What is the major characteristic of chronic ischemic heart disease?
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In hypertensive heart disease, which condition is the primary cause of left ventricular hypertrophy?
In hypertensive heart disease, which condition is the primary cause of left ventricular hypertrophy?
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Acute cor pulmonale is primarily caused by which condition?
Acute cor pulmonale is primarily caused by which condition?
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Study Notes
Aneurysms
- Berry aneurysms are a type of saccular aneurysm found in the circle of Willis.
- Most berry aneurysms are asymptomatic.
- Berry aneurysms can present with blood in the cerebrospinal fluid during a spinal tap.
Arteriovenous Fistulas and Malformations
- Arteriovenous fistulas or malformations are the most common congenital blood flow diseases.
- The most common management of AV fistulas is controlling blood pressure.
- The middle cerebral artery is the most common location for AV fistulas.
Hemangiomas
- Hemangioma is a tumor of capillaries.
- Capillary hemangiomas are present at birth and will spontaneously regress. They have capillaries of normal size.
- Cavernous hemangiomas are known as port wine stains and have wider lumens and pooling of blood. They will not fade with time.
- Sturge-Weber syndrome is a type of cavernous hemangioma that extends through the skull to affect the brain due to dystrophic calcifications and absence of hypercalcemia.
Coarctation of the Aorta
- Infantile coarctation of the aorta is a rare disease with severe narrowing of the aorta proximal to the ductus arteriosus.
- Adult (post-ductal) coarctation of the aorta is the most common comorbidity with Turner syndrome and the most common form of coarctation of the aorta.
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Post-ductal coarctation is found in adults and often presents with features like:
- Rib notching
- Delayed femoral pulse
- Distal thigh pain
- Hypertension (due to renin production in the kidneys)
- Post-ductal coarctation causes ischemic blood flow to the kidneys, activating renin and leading to hypertension.
Marfan Syndrome
- Marfan syndrome is a genetic disorder affecting fibrillin production, leading to cardiovascular complications.
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Marfan syndrome can affect the cardiovascular system in the following ways:
- Aneurysm of the root of the aorta
- Dissecting aneurysm
- Aortic valve incompetence
- Marfan syndrome causes cystic changes, particularly affecting the tunica media of the aortic arch.
Ehlers-Danlos Syndrome
- Ehlers-Danlos syndrome is a group of genetic disorders affecting collagen formation.
- Ehlers-Danlos syndrome can cause hyperextensibility of the skin, poor wound healing, and a condition known as "rubber band man".
Marfan Syndrome
- Affects the tunica media of the heart.
- A congenital blood vessel disease.
Ehlers-Danlos Syndrome
- Autosomal dominant recessive disease.
- Impacts collagen formation.
- Causes hypermobile skin and joints.
Monckeberg's Medial Calcific Sclerosis
- Dystrophic calcification in blood vessel walls.
- Caused by high inflammation levels.
Hurler Syndrome
- Autosomal recessive congenital blood vessel disease.
- Caused by enzyme deficiency.
- Leads to GAG accumulation in tissues.
- Affects bone, brain, and primarily the heart.
Gargoylism
- Aka (alternate name) for Hurler Syndrome.
Hyaline Arteriosclerosis
- Arteriosclerosis type.
- Abnormal material accumulates in the intima of arterioles.
- Narrows the lumen.
- Associated with diabetes mellitus and hypertension.
Hyperplastic Arteriolosclerosis
- Arteriosclerosis type.
- Thickening of the media.
- Associated with rapidly increasing hypertension, especially malignant hypertension.
- Narrows the lumen and stiffens the walls.
Atherosclerosis
- Disease of affluence leading to ischemic heart disease.
- Individuals with high saturated fat diets are at highest risk.
Common Pathogenesis and Progression of Atherosclerosis
- Fatty streak and simple fibrous atheromatous plaque.
Risk Factor for Atherosclerosis
- Hyperlipidemia (total count above 200) poses the highest risk.
Common Thrombosis Formation Sites in Atherosclerosis
- Coronary arteries and internal carotid arteries.
Effects of Exercise on Vasculature in Atherosclerosis
- Increased collateral circulation.
Benign Arteriosclerosis
- Hyaline arteriolosclerosis.
Complications of Systemic Hypertension
- Cotton wool spots (referring to the retina).
Vasculitis
- A group of diseases characterized by inflammatory changes in the wall of a blood vessel.
Aortitis
- Inflammatory changes occurring in the wall of the aorta.
Polyarteritis Nodosa (PAN)
- Affects small to medium-sized arteries, primarily seen in males aged 20 and older.
- A progressive disease with lesions at different stages.
- Anti-Hep B antibody is often present at the site of the lesion.
- Petechial hemorrhages are a characteristic symptom.
Wegener's Granulomatosis
- A type of vasculitis that causes necrotizing granulomatosis in the lungs, nose, and kidneys.
- Often fatal within a year without treatment.
- Presents with a collapsed nasal septum.
Hypersensitivity Angiitis
- Affects small vessels, capillaries, and venules due to toxins or infections.
- Lesions are at the same stage and event.
- Can present with hemoptysis (lungs), hematuria (kidneys), and bowel/rectal bleeding.
Temporal Arteritis
- Affects medium-sized muscular arteries, most common around age 70.
- The superficial temporal artery is most affected, becoming occluded.
- Leading cause of sudden onset of headaches in the elderly.
- Associated with HLA DR4 antigen.
Kawasaki's Arteritis
- Affects the coronary arteries of the heart and the tunica intima, which becomes indurated.
- Often associated with hypersensitivity.
- A disease of childhood.
Thromboangitis Obliterans
- Also known as Buerger's disease.
- Seen in heavy chain smoking countries.
- The radial and tibial arteries are most affected.
- A relapsing and remitting inflammatory condition of the vessels.
Takayasu's Disease
- Primarily affects females under 4 years of age.
- Fibrotic changes in all three layers of the artery, particularly the tunica intima.
- Affects the aortic arch and its three branches, resulting in an absence of pulse in the branches supplying the head and neck.
- Radial pulse is absent, but LE pulse is normal.
Syphilitic Aortitis
- Primarily impacts the proximal 1/3 of the aortic arch in the secondary stage of syphilis.
- Fusiform aneurysm occurs, leading to tissue breakdown that pulls the three cusps of the aortic semilunar valve apart.
- This results in incompetence (regurgitation) and an increased diastolic volume in the left ventricle.
Raynaud's Disease
- Excessive vascular response to cold, causing ischemia in the digits, turning them white, then cold, then cyanotic, and very painful upon warming.
- A primary condition occurring in young females with no obvious underlying condition.
- Vessels overreact and go into spasm rather than just vasoconstriction.
Raynaud's Phenomenon
- Secondary condition that can occur at any age in either sex, depending on the underlying condition.
- Cryoglobulins are present.
- Conditions may include bronchogenic carcinoma.
Heart Diseases
-
Ischemic heart disease is the most common disease of the heart, often caused by atherosclerosis. It's prevalent in developed countries and serves as a marker for atherosclerosis within populations.
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Hypertensive heart disease is another major heart disease linked to obesity. It impacts the heart due to increased peripheral resistance, a vascular disorder. Left ventricular hypertrophy causes chamber size reduction.
Heart Size Changes
- Hypertrophy: External increase in muscle mass of the ventricle, leading to a decrease in chamber size.
- Dilation: Internal change where the heart muscle weakens, leading to stretching and enlargement of the ventricular chamber.
Congestive Heart Failure
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Occurs due to a faulty heart pump, causing congestion, particularly in the lungs.
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Low Output Failure: Caused by heart disease itself, leading to a compromised pump.
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High Output Failure: Stems from diseases outside the myocardium, such as increased tissue metabolic rate or decreased blood carrying capacity. The heart pumps more blood than usual but still cannot meet tissue demands.
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Right Ventricular Failure most commonly arises from:
- Left ventricular failure.
- Cor pulmonale (lung disease).
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Left Ventricular Failure most commonly arises from:
- Coronary artery disease.
- Systemic hypertension.
Heart Failure Types
- Forward Failure: Inadequate blood delivery to tissues, leading to hypoxia and related effects.
- Backward Failure: Blood congestion in the venous system due to the heart's inability to effectively circulate blood.
Left Ventricular Failure Causes & Effects
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Ischemic heart disease: Often impacts the left anterior descending artery.
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Aortic or mitral valve disease: Stenosis or incompetence can cause LVF.
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Acute Left Ventricular Failure (LVF):
- Forward Failure: Hypotension, cardiogenic shock.
- Backward Failure: Acute pulmonary edema.
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Chronic Left Ventricular Failure (LVF):
- Forward Failure: Ischemia, hypoxia of the kidneys leading to fluid and sodium retention.
- Backward Failure: Chronic pulmonary congestion.
Right Ventricular Failure
- Pulmonary diseases like COPD and left ventricular failure can lead to RVF.
- Cor pulmonale is the most common cause of isolated right ventricular failure.
Compensation Mechanisms
- Anatrophic: Decreased contraction strength.
- Chronatrophic: Increased heart rate to compensate for weak contractions.
Heart Disease
-
Ischemic heart disease is the most common heart disease and often caused by atherosclerosis. It's a disease of developed countries and is used as a measure of atherosclerosis in the population.
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Hypertensive heart disease is often associated with obesity and causes problems due to increased peripheral resistance. It is a vascular disorder affecting the heart.
Heart Failure
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Congestive heart failure results from a faulty pump, either low output failure (from heart disease) or high output failure (from systemic diseases).
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Left ventricular failure (LVF) is most commonly caused by coronary artery disease, followed by systemic hypertension.
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Right ventricular failure (RVF) most commonly results from left ventricular failure, with cor pulmonale being the second most common cause.
Types of Heart Failure
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Hypertrophy: Enlargement of the heart due to an increase in muscle mass. Typically causes a decrease in chamber size.
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Dilation: The heart muscle becomes flabby and hypotonic, leading to chamber enlargement.
Forward vs. Backward Failure
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Forward failure: The heart fails to deliver an adequate amount of blood to the tissues, leading to hypoxia.
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Backward failure: Blood congests in the venous system due to the heart's inability to efficiently pump blood through the circulation.
Systemic Effects of Left Ventricular Failure
-
Acute LVF:
- Forward failure: Hypotension, cardiogenic shock
- Backward failure: Acute pulmonary edema
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Chronic LVF:
- Forward failure: Ischemia, hypoxia of kidneys leading to sodium and water retention
- Backward failure: Chronic pulmonary congestion
Key Facts about Ventricular Failure
- LVF due to ischemic heart disease often impacts the left anterior descending artery.
- LVF due to aortic or mitral valve disease often results from stenosis or incompetence.
- Right ventricular disease can result from pulmonary diseases such as COPD and left ventricular failure.
- Cor pulmonale is the most common cause of isolated right ventricular failure.
Compensation Mechanisms
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Anatrophic: Contraction strength decreases.
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Chronatrophic: Increased heart rate compensates for weak contractions.
Right Ventricular Failure
- Acute right ventricular failure (RVF) is most commonly due to forward failure from a pulmonary embolism.
- Chronic RVF due to backward failure can lead to nutmeg liver due to chronic passive congestion.
Angina Pectoris
- Stable angina pectoris occurs during physical exertion and resolves with rest.
- Variant (Prinzmetal) angina is primarily associated with vasospasm rather than atherosclerosis.
Myocardial Infarction (MI)
- Troponin is the laboratory marker that rises first and remains elevated for 7–10 days following an MI.
- Arrhythmias are the most common immediate cause of death following an MI.
Chronic Ischemic Heart Disease
- Chronic ischemic heart disease, also known as ischemic cardiomyopathy, is characterized by progressive death of cardiac muscle tissue with fibrosis.
Hypertensive Heart Disease
- Increased blood pressure is the primary cause of left ventricular hypertrophy in hypertensive heart disease.
Cor Pulmonale
- Acute cor pulmonale typically results from a pulmonary embolism.
Rheumatic Heart Disease
- Verrucous vegetations on heart valves are characteristic of rheumatic heart disease.
Mitral Valve Prolapse
- Mitral valve prolapse is commonly associated with Marfan syndrome.
Cardiomyopathy
- Dilated cardiomyopathy is associated with poor contractile function and potential thrombus formation.
Ventricular Septal Defect (VSD)
- A VSD that results in a left-to-right shunt without cyanosis is known as Melody de Roger.
Patent Ductus Arteriosus (PDA)
- PDA is characterized by an open ductus arteriosus and a continuous murmur.
Tetralogy of Fallot
- Tetralogy of Fallot includes:
- Overriding aorta
- Pulmonary stenosis
- Right ventricular hypertrophy
- NOT left atrial enlargement
Acute Right Ventricular Failure (RVF)
- Results from a forward failure mechanism due to pulmonary embolism from a Deep Vein Thrombosis (DVT)
Chronic Right Ventricular Failure (RVF)
- Can lead to Nutmeg Liver due to chronic passive congestion which causes a backward failure mechanism.
Stable Angina
- Primarily affects the coronary arteries to the heart.
- Commonly experienced during physical exertion
- Resolved with rest
Variant (Prinzmetal) Angina
- Characterized by vasoconstriction rather than atherosclerosis, which can lead to chest pain.
Myocardial Infarction (MI)
- Troponin rises first and remains elevated for 7–10 days after an MI
- Arrhythmias are a common cause of death following an MI
Chronic Ischemic Heart Disease (ischemic cardiomyopathy)
- Characterized by progressive death of cardiac muscle tissue with fibrosis, leading to impaired heart function.
Hypertensive Heart Disease
- Increased blood pressure leads to left ventricular hypertrophy, which increases the workload on the left ventricle
Acute Cor Pulmonale
- Typically caused by a deep vein thrombosis leading to a pulmonary embolism
Rheumatic Heart Disease
- Characterized by Verrucous vegetations, or small growths, on heart valves
Mitral Valve Prolapse
- Associated with Marfan syndrome, which is a connective tissue disorder.
Dilated Cardiomyopathy
- Characterized by poor contractile function and potential thrombus formation
Ventricular Septal Defect (VSD)
- Melody de Roger is a type of VSD that results in a left-to-right shunt without cyanosis.
- Left-to-right shunts cause blood to flow from the high-pressure left ventricle to the lower-pressure right ventricle
Patent Ductus Arteriosus (PDA)
- Characterized by a continuous murmur, which is a persistent heart sound between heartbeats, which can indicate an open ductus arteriosus.
Tetralogy of Fallot
- Includes: an overriding aorta, pulmonary stenosis, right ventricular hypertrophy and a ventricular septal defect (VSD)
- Does not involve left atrial enlargement.
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Description
This quiz explores the relationship between anemia and its effects on cardiac function. It focuses on how lack of oxygen due to anemia leads to increased workload on the heart. Test your knowledge on the clinical features of different types of anemia.