Question:
Pseudo P pulmonale is seen in:
Pseudo P pulmonale is seen in:
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Tall peaked P waves mimicking P pulmonale from a low electrolyte.
Updated On: Jun 24, 2026
- Hypokalemia
- Hyponatremia
- Hypocalcemia
- Hypercalcemia
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The Correct Option is A
Solution and Explanation
Step 1: On the ECG, a tall peaked P wave is called P pulmonale and indicates right atrial enlargement, often from tricuspid stenosis or pulmonary hypertension. A notched bifid P wave is P mitrale and indicates left atrial enlargement.
Step 2: A very similar tall, peaked P-wave appearance that mimics true P pulmonale, but without right atrial enlargement, is termed pseudo P pulmonale.
Step 3: This pseudo P pulmonale pattern is classically seen in hypokalemia. Hyponatremia, hypocalcemia and hypercalcemia do not produce this pattern, so the answer is hypokalemia.
Step 2: A very similar tall, peaked P-wave appearance that mimics true P pulmonale, but without right atrial enlargement, is termed pseudo P pulmonale.
Step 3: This pseudo P pulmonale pattern is classically seen in hypokalemia. Hyponatremia, hypocalcemia and hypercalcemia do not produce this pattern, so the answer is hypokalemia.
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