Functional Pulmonary Capillary Surface Area in BPA for CTEPH

Chronic thromboembolic pulmonary hypertension \[CTEPH\] is caused by pulmonary emboli that have enlarged in pulmonary arteries and have become organized into the vessel wall. Many patients with CTEPH are treated with balloon pulmonary angioplasty \[BPA\] which mechanically opens the narrow pulmonary arteries. It is unclear how much downstream functional pulmonary capillary surface area \[FCSA\] is recovered during BPA. The investigators plan to measure FCSAIn CTEPH patients, before and after a session of BPA.

NCT Number	NCT05719415
Lead Sponsor	Jewish General Hospital
Conditions	Hypertension, Pulmonary, Pulmonary Thromboembolisms
Enrollment	40 participants
Start Date	2023-03-23
Primary Completion	2028-01-30 (estimated)
Study Completion	2028-01-30 (estimated)
Updated on ClinicalTrials.gov	2025-09-23