Which findings on an ECG suggest pulmonary arterial hypertension (PAH)?

Updated: Apr 25, 2018
  • Author: Kristin E Schwab, MD; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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On ECG, signs of right ventricular hypertrophy or strain may be observed. These include right-sided axis deviation, an R-to-S wave ratio greater than 1 in lead V1, increased P-wave amplitude, and an incomplete or complete right bundle-branch block pattern.

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