Tall, narrow, peaked P waves in electrocardiographic leads II, III, and aVF, and often a prominent initial positive P wave component in V1, presumed to be characteristic of cor pulmonale. (Although this term is extensively used in the electrocardiographic literature, it is actually a misnomer and would be more appropriately called P-dextrocardiale, since it results from overload of the right atrium regardless of the cause, as in tricuspid stenosis, and may occur independently of cor pulmonale.) In lung disease, P-pulmonale is usually transient, occurring during exacerbations.

(05 Mar 2000)

P protein, PPTP, Ppu21IM methyltransferase, P Pudlak < Prev | Next > PQ, PQ-9, P-Q interval, PQS

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