18 Questions
What is the most common cause of myocardial infarction?
Rupture of an atherosclerotic plaque with thrombosis and vasospasm
What is the typical duration of symptoms for an episode of variant angina (Prinzmetal angina)?
Symptoms are unrelated to exertion and can last for an extended period
What is the typical duration of symptoms for an episode of stable angina (effort angina)?
1-5 minutes
Which of the following is a typical characteristic of an infarct in the territory of the left anterior descending (LAD) artery?
ST-segment elevation in leads V1-V4
Which of the following is a typical characteristic of an infarct in the territory of the right coronary artery (RCA)?
ST-segment elevation in leads II, III, and aVF
What is the typical outcome of complete coronary occlusion lasting 20-30 minutes?
Irreversible myocardial injury
What is the most common cause of sudden death among cases related to myocardial infarction?
Obstruction of the left anterior descending artery
Which artery's obstruction leads to ECG changes in leads II, III, and aVF?
Right coronary artery
What type of myocardial infarction results in 'non-ST elevation MI'?
Subendocardial MIs
During myocardial infarction, which wall of the left ventricle is affected by infarcts when the circumflex artery is obstructed?
Lateral wall
Which artery's obstruction may cause ECG changes in the anterior chest leads (V1 - V3)?
Left anterior descending artery
'ST elevation MI' or STEMI is commonly associated with which type of myocardial infarction?
Transmural MIs
Which of the following is the most likely consequence of a complete obstruction of the left anterior descending (LAD) coronary artery?
Anterior wall myocardial infarction
What is the characteristic pattern of angina pectoris caused by Prinzmetal's variant angina?
Occurs at rest, often in the early morning hours
Which of the following is a potential complication of a large myocardial infarction?
Ventricular septal defect
In the setting of an acute myocardial infarction, which of the following ECG findings is most suggestive of a right coronary artery occlusion?
ST-segment elevation in leads II, III, and aVF
Which of the following factors is most likely to increase myocardial oxygen demand?
Increased afterload
In the setting of an acute myocardial infarction, which of the following ECG findings is most suggestive of a left anterior descending (LAD) artery occlusion?
ST-segment elevation in leads V1-V4
This quiz covers the Ischaemic Heart Disease lecture outcomes, including the relation between coronary artery occlusion and clinical spectrum, consequences of myocardial infarction, and more. Understand the most common cause of death in the Western world.
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