Right atrial enlargement
From Infogalactic: the planetary knowledge core
File:RtALarge09.JPG
Right atrial enlargement (P pulmonale). Note P wave height is 3 mm.
Right atrial enlargement is a form of cardiomegaly. It can broadly be classified as either right atrial hypertrophy (RAH) or dilation. It is characterized by a P wave height greater than 2.5 mm.[1]
File:RAE2015.JPG
Right atrial enlargement as seen on an ECG
References
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