Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.
NCT04336995 · ClinicalTrials.gov registry record · Phase 4
Exercise Pulmonary Transit Time
A Phase 4 study, sponsored by Vanderbilt University Medical Center.
- Completed
- Registry status
- Phase 4
- Development phase
- 14
- Enrollment target
NCT04336995: Completed Phase 4 study, sponsored by Vanderbilt University Medical Center.
NCT04336995 is a Phase 4 study that has completed, run by Vanderbilt University Medical Center. The registered enrollment target is 14 participants, below the 518-participant average among 9,235 other Phase 4 trials with a reported enrollment target (97% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04336995, a Phase 4 study, has completed, sponsored by Vanderbilt University Medical Center.
- COMPLETED
- Registry status
- Phase 4
- Development phase
- 14 participants
- Enrollment target
Study Summary
The study seeks to measure pulmonary transit time via contrast-echocardiography before and after exercise.
Primary Outcome
interval required for the pulmonary blood volume to traverse the pulmonary circulation
Interventions
- DIAGNOSTIC_TEST contrast echocardiography
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 14 participants |
| Start Date | 2020-08-27 |
| Est. Completion | 2024-03-01 |
| Phase | Phase 4 |
What the finished NCT04336995 record still lists
NCT04336995 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 14 participants, a relatively small participant target, below the 518-participant average among 9,235 other Phase 4 trials with a reported enrollment target (97% lower).
The record links to 0 conditions, and to 1 intervention - of which contrast echocardiography is the first listed.
NCT04336995 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT04336995 about?
NCT04336995 is a clinical study titled "Exercise Pulmonary Transit Time". The study seeks to measure pulmonary transit time via contrast-echocardiography before and after exercise.
What is the current status of trial NCT04336995?
This trial is currently completed. It is a Phase 4 study. The enrollment target is 14 participants. The study started on 2020-08-27. Estimated completion is 2024-03-01.
What interventions are being tested in trial NCT04336995?
The interventions under investigation include: contrast echocardiography (DIAGNOSTIC_TEST).
Who is sponsoring clinical trial NCT04336995?
This trial is sponsored by Vanderbilt University Medical Center, which has 677 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT04336995's enrollment target sits among peer trials
14 1901st of 2000 higher than 91 of 2,000 other Phase 4 trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Phase 4 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
Nationwide trials with similar profiles
Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.
Similar enrollment target
- NCT02523092 · 14 participants · Phase 4
Use of CXCL9 as a Biomarker of Acthar Efficacy
- NCT04263285 · 14 participants · NA
Treatment of Depression Post-SCI
- NCT04743271 · 14 participants · NA
Food and Circadian Timing
- NCT05065671 · 14 participants · Phase 1
Microbiome Derived Metabolism and Pharmacokinetics
Similar registry start date
- NCT05962346 · started 2026-12 · NA
Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia
- NCT07125183 · started 2026-12 · Phase 2
Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma
- NCT07292298 · started 2026-11 · Phase 2
Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates
- NCT06358040 · started 2026-10 · NA
Opioid Dispenser for Microdiscectomy/Laminectomy