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NCT00327080 · ClinicalTrials.gov registry record · Phase 1
Sildenafil to Treat HIV-Associated Pulmonary Hypertension
A Phase 1 study, sponsored by National Heart, Lung, and Blood Institute (NHLBI).
- Terminated
- Registry status
- Phase 1
- Development phase
- 20
- Enrollment target
NCT00327080: Clinical Trial Phase 1 study, sponsored by National Heart, Lung, and Blood Institute (NHLBI).
NCT00327080 is a Phase 1 study that was terminated before completion, run by National Heart, Lung, and Blood Institute (NHLBI). The registered enrollment target is 20 participants, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (67% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00327080, a Phase 1 study, was terminated before completion, sponsored by National Heart, Lung, and Blood Institute (NHLBI).
- TERMINATED
- Registry status
- Phase 1
- Development phase
- 20 participants
- Enrollment target
Study Summary
This study will examine how blood pressure in the lungs is controlled in healthy people, people with HIV and people with HIV and pulmonary artery hypertension (high blood pressure in the lungs, also called PAH). PAH sometimes develops in people with HIV, but it is not known why this occurs or how best to treat it. Healthy volunteers and patients with HIV infection who are 18 years of age or older may be eligible for this study. All candidates are screened with a medical history, physical examination, electrocardiogram (EKG), chest x-ray, echocardiogram and blood tests. Participants undergo the following procedures: All participants have a right heart catheterization and forearm blood flow study. * Catheterization study. A catheter (plastic tube) is placed in an arm vein and possibly in an artery in the arm. Then a large catheter is passed through a vein in the groin, neck or chest. Through this "introducer" catheter, another catheter is advanced into the right side of the heart and to the pulmonary artery. A facemask is put in place to measure the amount of nitric oxide produced by the lungs. Acetylcholine is infused through the catheter and its effects on blood pressure in the lungs and on the amount of nitric oxide exhaled is measured. After about 1 hour, the catheter and facemask are removed and a new catheter is inserted through the introducer catheter into the pulmonary artery. The subject is moved into an MRI scanner where blood flow is measured after infusion of three different medications: acetylcholine (causes blood vessels to expand and slows heart rate); sodium nitroprusside (causes blood vessels to expand and increases blood flow to the heart); and L-NMMA (decreases blood flow by blocking production of nitric oxide in cells lining the blood vessels). * Blood flow study. Small tubes are inserted into the artery of the patient's forearm. These are used to infuse medicines and draw blood samples. Forearm blood flow is measured using pressure cuffs placed
Interventions
- DRUG Acetylcholine
- PROCEDURE MRI
- DRUG L-NMMA
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 20 participants |
| Start Date | 2006-05-12 |
| Est. Completion | 2009-03-18 |
| Phase | Phase 1 |
Why NCT00327080 stopped before completion
NCT00327080 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 20 participants, a relatively small participant target, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (67% lower).
The record links to 0 conditions, and to 3 interventions - of which Acetylcholine is the first listed.
NCT00327080 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00327080 about?
NCT00327080 is a clinical study titled "Sildenafil to Treat HIV-Associated Pulmonary Hypertension". This study will examine how blood pressure in the lungs is controlled in healthy people, people with HIV and people with HIV and pulmonary artery hypertension (high blood pressure in the lungs, also called PAH). PAH sometimes develops in people with HIV, but it is not known why this occurs or how be...
What is the current status of trial NCT00327080?
This trial is currently terminated. It is a Phase 1 study. The enrollment target is 20 participants. The study started on 2006-05-12. Estimated completion is 2009-03-18.
What interventions are being tested in trial NCT00327080?
The interventions under investigation include: Acetylcholine (DRUG), MRI (PROCEDURE), L-NMMA (DRUG).
Who is sponsoring clinical trial NCT00327080?
This trial is sponsored by National Heart, Lung, and Blood Institute (NHLBI), which has 501 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT00327080's enrollment target sits among peer trials
20 1629th of 2000 higher than 285 of 2,000 other Phase 1 trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Phase 1 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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