Which in ECG is the most important for differential diagnosis between myocardial infarction and variant angina pectoris?
Understand the Problem
The question is asking for the key ECG changes that can help differentiate between myocardial infarction and variant angina pectoris, which are both conditions affecting the heart but require different diagnostic approaches.
Answer
ST-segment elevation on an ECG.
ST-segment elevation on an ECG is the most important for differential diagnosis between myocardial infarction and variant angina pectoris.
Answer for screen readers
ST-segment elevation on an ECG is the most important for differential diagnosis between myocardial infarction and variant angina pectoris.
More Information
ST-segment elevation helps differentiate between myocardial infarction and variant angina. While both can present with chest pain, myocardial infarction typically shows persistent ST elevation, whereas variant angina is usually temporary and due to coronary artery spasm.
Tips
Confusing ST depression with ST elevation can lead to misdiagnosis. Understanding the characteristics of the ECG pattern and their clinical implications is crucial.
Sources
- ST elevation: Differential diagnosis and caveats. A comprehensive ... - sciencedirect.com
- STEMI (ST Elevation Myocardial Infarction): diagnosis, criteria, ECG ... - ecgwaves.com
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