Prospective surveillance of patients with developing chronic pulmonary thromboembolism and chronic thromboembolic pulmonary hypertension after occurring acute pulmonary thromboembolism - Prospective surveillance of patients with developing chronic pulmonary thromboembolism and chronic thromboembolic pulmonary hypertension after occurring acute pulmonary thromboembolism

Fifty-two patients were enrolled. Two patients(3.8%)developed chronic thromboembolic pulmonary hypertension. A total of 43 patients completed evaluation at 1 year, among whom (74%) had residual thrombi, with a median modified CT obstruction index (mCTOI) of 10.7%. The tricuspid regurgitation pressure gradient 60 mmHg or over and left ventricular end-diastolic dimension at diagnosis were significantly related to mCTOI at 1 year.