Which ECG change is most commonly seen during an episode of angina pectoris?
ST segment depression
Angina pectoris reflects transient myocardial sub-endocardial ischaemia from a mismatch between oxygen supply and demand. The classical ECG change during an angina episode is horizontal or down-sloping ST-segment depression in the leads overlying the ischaemic region, which resolves after the pain settles.
Wide QRS, prolonged PR and ST elevation point to bundle-branch block, AV block and transmural infarction (STEMI) respectively — not simple angina.
Hence, ST segment depression.
Similar Questions
Which ECG change is most commonly associated with myocardial ischemia?
A patient presents with chest pain and ST elevation in leads II, III, and aVF. According to the universal definition of MI, which coronary artery is most likely involved, and what is the ECG diagnosis?
Which ECG change is most characteristic of an acute myocardial infarction?
Which segment is primarily analyzed to diagnose an ST-elevation myocardial infarction (STEMI)?
What is a typical ECG finding in patients with cerebral infarct?
In the context of CVS monitoring, which finding in myxedema patients could be explained by their ECG pattern?
Which combination of symptoms and ECG findings is most indicative of myocardial infarction?
Which ECG finding most reliably indicates myocardial ischemia rather than established myocardial infarction?
During continuous ECG monitoring following subarachnoid hemorrhage, transient deep T-wave inversions are most accurately explained by which underlying mechanism?
During an acute myocardial infarction, which change in coronary circulation most directly impairs myocardial function?
Important Questions from Introduction to Cardiovascular Diseases
Which ECG change is most commonly associated with myocardial ischemia?
A patient presents with chest pain and ST elevation in leads II, III, and aVF. According to the universal definition of MI, which coronary artery is most likely involved, and what is the ECG diagnosis?
Which ECG change is most characteristic of an acute myocardial infarction?
Which segment is primarily analyzed to diagnose an ST-elevation myocardial infarction (STEMI)?
What is a typical ECG finding in patients with cerebral infarct?
