Abstract
Analysis of the frontal plane QRS axis was made in 115 patients with acute pulmonary embolism studied at this medical center. A leftward shift of axis was twice as frequent as a rightward shift, and left axis deviation was twice as common as right axis deviation at the time of the acute embolism. It is concluded that a leftward shift of the frontal plane electrical axis in acute pulmonary embolism may be considered one of the electrocardiographic manifestations of the disorder.
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