Epidemiological Study of Chronic Thromboembolic Pulmonary Hypertension in China
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ClinicalTrials.gov Identifier: NCT01717092
Recruitment Status : Unknown
Verified February 2014 by Shengqing Li, Fourth Military Medical University. Recruitment status was: Recruiting
Chronic thromboembolic pulmonary hypertension (CTPH) is associated with considerable morbidity and mortality. Its incidence after pulmonary embolism and associated risk factors are not well documented in Chinese population. We conducted a prospective, long-term, follow-up study to assess the incidence of symptomatic CTPH in consecutive patients with an acute episode of pulmonary embolism but without prior venous thromboembolism. Patients with unexplained persistent dyspnea during follow-up underwent transthoracic echocardiography and, if supportive findings were present, ventilation-perfusion lung scanning and pulmonary angiography. CTPH was considered to be present if systolic and mean pulmonary-artery pressures exceeded 40 mm Hg and 25 mm Hg, respectively; pulmonary-capillary wedge pressure was normal; and there was angiographic evidence of disease.
Condition or disease
To Assess the Long-term Risk for Adverse Events After PE.
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Layout table for eligibility information
Ages Eligible for Study:
18 Years to 80 Years (Adult, Older Adult)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
Consecutive patients with an acute episode of pulmonary embolism but without prior venous thromboembolism.
Patients with an episode of acute symptomatic pulmonary embolism without prior pulmonary embolism or venous thrombosis
Have other diseases (e.g., systemic sclerosis or severe emphysema) that could have caused nonthromboembolic pulmonary hypertension,