Palpitations for the USMLE (high yield differential! 🔥)

Palpitations can be a challenging topic on the USMLE because the symptom alone is not enough. The NBME wants you to identify the underlying driver: electrical, endocrine, catecholamine-related, or structural.

In this short breakdown, we review:

WPW → short PR + delta wave

Hyperthyroidism → tremor + weight loss

Pheochromocytoma → headache + sweating + hypertension

Mitral valve prolapse → mid-systolic click

Hope this helps you review the key mechanisms you need to know for Step 1 and Step 2 CK.

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