Resolution Rate of Acute Pulmonary Embolism in Man

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Abstract
In 15 patients with definite angiographic evidence of embolism involving both lungs, and treated with heparin or venous ligation or both, sequential studies showed only minimal angiographic and hemodynamic signs of resolution at seven days. By 10 to 21 days, pressures in the right side of the heart had decreased to near normal levels, and there was unmistakable angiographic evidence of resolution. Complete resolution, with normal angiograms and hemodynamics, was noted in three patients at 14, 15 and 34 days. In other patients angiographic and hemodynamic abnormalities persisted weeks after embolism.