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ISCHEMIC HEART DISEASE EXAM QUESTIONS AND VERIFIED ANSWERS
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ISCHEMIC HEART DISEASE EXAMQUESTIONS AND VERIFIED
ANSWERS
What is the cause of Ischemic Heart Disease (IHD)? - ANSWER
Syndromes that are due to an imbalance between myocardial O2
demand and O2 supply from the coronary arteries
Why is IHD important epidemiologically? - ANSWER #1 cause of death
in the US
What is the most common cause of IHD? - ANSWER Usually due to
atherosclerosis
IHD is usually due to atherosclerosis. What does this mean in terms of
risk factors for IHD? - ANSWER Same as those for atherosclerosis:
Hypertension
Diabetes
Smoking
Hyperlipidemia
Family History
Men/Post-menopausal women (estrogen is protective)
What are the types of IHD? - ANSWER Stable Angina
Unstable Angina
Myocardial Infarction
Chronic Ischemic Heart Disease
Sudden Cardiac Death
Coronary Blood Flow:
During what stage of the heart cycle are the coronary vessels filled with
blood? - ANSWER During diastole
, Coronary Blood Flow:
Vessels are filled during diastole. What would happen with HR higher
than 180? - ANSWER Not enough time is spent in diastole, so not even
filling of the coronary vessels would occur
-Can cause ischemia
Coronary Distribution:
What areas of the heart are perfused by the Left Anterior Descending
artery? - ANSWER Anterior portion of the Left Ventricle
Anterior 2/3 of the Interventricular Septum
Coronary Distribution:
What areas of the heart are perfused by the Right Coronary Artery? -
ANSWER Posterior portion of the Left ventricle
Posterior 1/3 of the interventricular septum
Papillary muscle (can lead to mitral prolapse)
Right ventricle
SA and AV nodes
Coronary Distribution:
What areas of the heart are perfused by the Left Circumflex artery? -
ANSWER Lateral free wall of the Left Ventricle
Coronary Distribution:
What vessel supplies the apex of the heart? - ANSWER Posterior
Descending Artery
-Can branch from RCA or LC, depending on whether the pt has a Right
or Left dominant heart (80% of people are Right dominant)
Stable Angina:
What is the clinical presentation? - ANSWER Substernal chest pain
that arises with exertion or emotional stress
Stable Angina:
What is the most common cause? - ANSWER Usually due to
atherosclerosis
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