Rosh Internal Medicine Boost Practice Exam

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What type of EKG change is typically seen with pericarditis?

Isolated T wave inversions
Diffuse ST elevations
Prolonged QT interval
Sinus tachycardia

The correct answer is: Diffuse ST elevations

The typical EKG change associated with pericarditis is diffuse ST elevations. This finding occurs due to the inflammation of the pericardium, which leads to changes in the epicardial repolarization. In pericarditis, the ST elevations are usually concave and seen in multiple leads, not confined to just one area of the heart. This broad involvement is a key distinguishing feature of pericarditis compared to other conditions that may cause localized ST segment changes, such as myocardial infarction. The presence of these diffuse ST elevations is significant because it provides a visual cue for clinicians to consider pericarditis in patients presenting with chest pain and appropriate clinical symptoms. Additionally, other findings commonly associated with pericarditis may include PR segment depression and a characteristic "friction rub" on auscultation, which can help support the diagnosis. Recognizing these EKG patterns is crucial for timely and appropriate management of the condition.