CHAMBER HYPERTROPHIES/
LEFT ATRIAL ENLARGEMENT
-- Left atrium forms the later part of the P wave. Hence enlargement of left atrium will produce an increase in the duration of the P wave, as well as delayed depolarization leading to "Double peaks" in P wave
-- Also called " P - mitrale "
-- This is evident very clearly in Chest leads
-- P wave is generally > 120 ms
LEFT ATRIAL ENLARGEMENT
-- Left atrium forms the later part of the P wave. Hence enlargement of left atrium will produce an increase in the duration of the P wave, as well as delayed depolarization leading to "Double peaks" in P wave
-- Also called " P - mitrale "
-- This is evident very clearly in Chest leads
-- P wave is generally > 120 ms
Image : LAE ... typical "bipeaked " P mitrale
RIGHT ATRIAL ENLARGEMENT
-- Right atrium forms the initial part of the p wave... hence Right atrial enlargement will produce Peaked/Tall P wave, and not widen the duration of P wave.
-- Refered to as P - pulmonale
-- Tall peaked P wave is seen in lead II and many leads (especially in right precordial leads)
-- P wave is Pointed
-- Usually > 2.5 mm
nice information:)
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