Tall, peaked P waves on ECG are most commonly associated with:
Right atrial enlargement
Tall, peaked (symmetrical) P waves greater than 2.5 mm in height in the inferior leads (II, III, aVF) are called 'P pulmonale' and indicate right atrial enlargement, typically from pulmonary hypertension or chronic lung disease.
Inferior MI shows ST changes rather than tall P waves, broad/bifid P waves indicate left atrial enlargement, and LVH shows tall R/deep S voltage changes in the QRS — not peaked P waves.
Hence, Right atrial enlargement.
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Important Questions from Basic Cardiovascular Investigations
What is the main purpose of the Einthoven triangle in electrophysiology?
What does the QT interval on a normal ECG primarily represent?
A patient presents with muscle weakness, and the ECG shows flattened T waves and prominent U waves. Which electrolyte imbalance is most probable?
Sinus bradycardia is associated with:
ST elevation in leads V1 to V4 most commonly indicates infarction of which wall of the heart?
