Pulmonary embolism in chronic hypoxemic patients with and without secondary polycythemia--analysis of risk factors in prospective clinical study.

Abstract

Polycythemia is a single most significant risk factor for pulmonary embolism in chronic hypoxemic patients. Value of D-dimer ≥ 500 μg /L, as well as presence of comorbidity, particularly vein varicose, in these patients should raise clinical suspicion of PE. Key words: chronic obstructive pulmonary disease, multidetector computed tomography, arrhythmia, varicose veins, pulmonary hypertension.