Skip to content

Differences in the Pulmonary Artery of People with Pulmonary Hypertension

Search Clinical Trials

Trial Objectives


Pulmonary hypertension (PH) and pulmonary arterial hypertension (PAH) are two conditions that can cause increased blood pressure within the lungs. The differences between the two conditions on a cellular level are not well understood, and researchers are evaluating cell samples from people that are undergoing a right heart catheterization to learn more about these two diseases and improve future care.

This research study is helping scientists better understand the differences between PH and PAH, which may lead to new treatments, improved early detection of these diseases, and a better understanding of how these diseases progress.

People who are scheduled for a right heart catheterization will be asked at an appointment before their procedure if some of the cells that are collected during this procedure can be used for this research study. Cells from the volunteers will be compared to cells from others with PH and PAH, as well as people without either condition. Participants will only need one study visit to enroll in this trial before their procedure, and then will have one monitoring phone screen per year for three years.

Who Can Participate


Adults 18 years or older who are already scheduled for a right heart catheterization and are not pregnant.

Age: 18+ Gender: Any

Estimated Time Commitment


One visit to review and sign consent before scheduled procedure and three follow-up phone calls (once a year for three years).

Payment & Reimbursement


Payment: Not Provided

Travel Reimbursement: Not Available

Trial Contact


For more information, contact:

Athena Harvey
303.398.1171

Request More Information

Trial Location


National Jewish Main Campus and Saint Joseph Hospital, Denver, CO

Trial Sponsors


NIH, Borstein Family Foundation

Principal Investigators

Tim Lahm

Tim Lahm, MD, ATSF

Co-Investigators

Darlene Kim

Darlene Kim, MD, FACC

Request more Information

By completing this form, you agree to learn more about this study and see if you qualify.

I would also like to receive periodic emails with health information, news and clinical research updates from National Jewish Health required