ELECTROCARDIOGRAPHIC CHANGES IN MASSIVE PULMONARY-EMBOLISM .1. ANALYSIS OF CHANGES IN P-WAVE AND QRS COMPLEX

  • 1 January 1977
    • journal article
    • research article
    • Vol. 201  (6) , 539-542
Abstract
A retrospective analysis of ECG changes during lung embolism was made in 35 patients (16 male, 19 female) who died of massive lung embolism. The presence of lung embolism or infarct was confirmed at autopsy. According to the ECG, the mean heart rate increased from 91-106. The amplitude of the P wave increased in leads I, II, III and aVL [augmented unipolar ECG leads (left arm)] and decreased in all precordial leads. A small increase in the Q wave occurred in leads II, III, aVF [augmented unipolar leads (left foot)], V1, V2 and V6. Only a small decrease in the R wave occurred in leads I, II and aVL. A small increase in the S wave occurred in leads I, II, V2-V6 when compared with the controls. None of the differences was statistically significant.

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