41 Questions
Which of the following is the primary cause of ischemic heart disease?
Obstructive atherosclerotic lesions in coronary arteries
Which of the following is a clinical presentation of ischemic heart disease?
All of the above
What is the most common type of angina?
Stable angina
What is the main factor contributing to acute plaque change in ischemic heart disease?
Adrenergic stimulation
Which zone of the myocardium is most susceptible to irreversible changes during prolonged ischemia?
Subendocardial zone
What is the gross appearance of a myocardial infarct within the first 12 hours?
no changes
What are the microscopic features of a myocardial infarct in early 4 hours?
Early coagulation necrosis, edema, hemorrhage
What is the main effect of ischemia on myocardial contractility?
Decrease in contractility
Which type of angina is characterized by intermittent chest pain caused by transient, reversible myocardial ischemia?
Stable angina
What is the primary cause of ischemic heart disease?
Coronary artery occlusion
What are the microscopic features of a myocardial infarct within the first 12 hours?
Coagulation necrosis
Which zone of the myocardium is most susceptible to irreversible changes during prolonged ischemia?
Endocardium
What factor contributes to acute plaque change in ischemic heart disease?
Adrenergic stimulation
What is the main effect of ischemia on myocardial contractility?
Loss of contractility
What is the clinical presentation of unstable angina?
Increasingly frequent pain occurring at rest
What type of angina is characterized by coronary artery spasm and can affect normal vessels?
Prinzmetal/variant angina
What is the gross appearance of a myocardial infarct within 12-24 hours?
Dark mottling (red-blue discoloration)
Which type of angina is characterized by intermittent chest pain caused by transient, reversible myocardial ischemia?
Stable angina
What is the main cause of pain in angina?
Release of adenosine
Which type of angina is characterized by increasingly frequent pain that occurs at rest?
Unstable angina
What type of angina is caused by coronary artery spasm and can affect normal vessels?
Prinzmetal/variant angina
What is the main factor contributing to acute plaque change in ischemic heart disease?
Adrenergic stimulation
Which of the following is a microscopic feature of myocardial infarct in the early 4 hours?
Coagulation necrosis
Which of the following is a clinical presentation of 70% coronary artery occlusion?
Stable angina
What are the microscopic features of a myocardial infarct within the first 12-24 hours?
All of the above
Which of the following is a clinical presentation of ischemic heart disease?
All of the above
What type of angina is characterized by coronary artery spasm and can affect normal vessels?
Variant (Prinzmetal) angina
Which of the following is the most sensitive and specific marker for myocardial infarction?
B and C
Which of the following is a microscopic feature of a myocardial infarct within 7-14 days?
Granulation tissue at margins
Which of the following is a complication of myocardial infarction?
All of the above
Which of the following is a risk factor for arrhythmias after myocardial infarction?
Reperfusion
Which of the following is a gross feature of a myocardial infarct within 3-7 days?
All of the above
Which of the following is a gross feature of a myocardial infarct within 24-72 hours?
mottling with yellow-tan infarct center
Which of the following is a microscopic feature of a myocardial infarct within 2-8 weeks?
Increased collagen deposition
Which of the following is a gross feature of a myocardial infarct after 2 months?
All of the above
Which of the following is a microscopic feature of a myocardial infarct within 24-72 hours?
Loss of myocyte nuclei
Which of the following is a risk factor for arrhythmias after myocardial infarction?
All of the above
Which of the following is a gross feature of a myocardial infarct within 7-14 days?
Maximally yellow-tan and soft
Which of the following is a microscopic feature of a myocardial infarct within 2-8 weeks?
Gray-white scar
Which of the following is a clinical presentation of myocardial infarction?
All of the above
Which of the following is a microscopic feature of a myocardial infarct within 7-14 days?
Red-gray
Test your knowledge on the causes of ischemic heart disease, including obstructive atherosclerotic lesions, coronary emboli, and more. Explore the various factors that contribute to reduced blood flow and increased oxygen demand.
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