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Updated: Aug 11, 2026

Ultrasonographic Assessment During Cardiopulmonary Resuscitation
Published on: October 24, 2020
Echocardiography in pulmonary embolism
Abstract:
Echocardiography was performed on 10 patients with suspected acute pulmonary embolism. In 3 patients with normal echocardiograms, the diagnosis was excluded by pulmonary angiography. Two with small emboli on angiography had a pulmonary arterial pressure less than or equal to 35 mmHg and normal echocardiograms. Five had an increased right ventricular end-diastolic dimension (RV-EDD) and 4 had a left ventricular end-diastolic dimension (LV-EDD) below normal or in low normal levels. The RVEDD/LVEDD ratio was increased in 4 patients, 3 of whom had paradoxical interventricular septal motion. The mitral valve E-F slope and left atrial dimension changed variably. The posterior aortic wall O-V excursion (PAW-OV-Ex) decreased in 5 and was correlated with LVEDD (r = +0.92, p less than 0.01) and the RVEDD/LVEDD ratio (r = -0.87, p less than 0.025). Follow-up echocardiography in 3 cases after recovery showed a decreased RVEDD/LVEDD ratio, normal septal motion and improved LVEDD and PAW-OV-Ex. The PAW-OV-Ex seems to mirror the abnormalities in volume changes of the left side of the heart resulting from pulmonary embolism. An entirely normal echocardiogram would be unlikely in the presence of a hemodynamically significant pulmonary embolism.
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