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Chronic Thromboembolic Disease Registry

Chronic Thromboembolic Disease: A Prospective Registry

Who can join

Ages 18 and older · All sexes

Inclusion Criteria:

* Patients referred with CTED and/or CTEPH defined as:

  1. Mean pulmonary arterial pressure (mPAP) \> 20 mmHg at rest with pulmonary vascular resistance (PVR) \> 2 Wood units (WU); or if mPAP ≤ 20 mmHg or PVR ≤ 2 WU at rest, have exercise limitations from chronic thromboembolic pulmonary disease (CTEPD) without pulmonary hypertension (PH)
  2. Radiologic finding of chronic thromboembolic disease, including abnormal ventilation perfusion scan, pulmonary angiogram, computer tomographic pulmonary angiogram, or magnetic resonance pulmonary angiogram
  3. Post-embolic exercise intolerance and evidence of chronic thromboembolic disease in the absence of resting pulmonary hypertension
* Treatment with anticoagulation for ≥ 3 months before diagnosis of CTEPH or CTEPD without PH
* Age ≥ 18 years

Exclusion Criteria:

* Main cause of PH other than World Health Organization (WHO) group 4 (CTEPH)
* Patient's refusal to participate in clinical research and/or receive intervention

About the study

The goal of this patient registry is to learn about the natural history in patients with chronic thromboembolic disease (CTD) and/or chronic thromboembolic pulmonary hypertension (CTEPH). The main question\[s\] it aims to answer are:

* Long-term outcome after various types of treatment, including medication, balloon pulmonary angioplasty, and pulmonary endarterectomy * Effect of treatment on patient's quality of life and exercise tolerance Participants will be followed longitudinally to assess their health outcomes and quality of life via chart review and health quality surveys.

What is being tested

• Survey (other)

Sponsor: University of California, San Francisco · Participants: 100 · Started: Aug 1, 2023

Contact the study team

• Miles Conrad, MD · Phone: (415) 353-1300
• Xiao Wu, MD · Phone: 628-286-7340

Official record on ClinicalTrials.gov — NCT05843500

Locations in the U.S.

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.