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NCT04526925 · ClinicalTrials.gov registry record · NA
The Effects of Filter During CPET on WOB and Aerosol Particle Concentrations
A NA study, sponsored by Rush University Medical Center.
- Terminated
- Registry status
- NA
- Development phase
- 10
- Enrollment target
NCT04526925: Clinical Trial NA study, sponsored by Rush University Medical Center.
NCT04526925 is a NA study that was terminated before completion, run by Rush University Medical Center. The registered enrollment target is 10 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (99% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04526925, a NA study, was terminated before completion, sponsored by Rush University Medical Center.
- TERMINATED
- Registry status
- NA
- Development phase
- 10 participants
- Enrollment target
Study Summary
Due to the concerns of virus transmission during COVID-19 pandemic, multiple respiratory societies postpone or limit pulmonary function test, especially cardiopulmonary exercise test (CPET), as patients may generate large amount of aerosol particles during test but it is conventionally performed without filter. This study aims to investigate the effects of reducing aerosol particle concentrations in the room air during CPET by placing an inline filter, and to assess the effects of filter on the physiologic responses during CPET.
Primary Outcome
The peak aerosol particle concentrations between the situations with and without an in-line filter are reported. The peak concentrations of aerosol particles generated by subjects during CPET, are measured as particles per cubic centimeters of room air. The device measured the concentrations every 6 seconds, it continuously recorded the data for 45 minutes since CPET started and peak concentrations were reported.
Interventions
- DEVICE Respiratory filter in-line placed with the standard mouthpiece
- OTHER Standard mouthpiece
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 10 participants |
| Start Date | 2020-08-29 |
| Est. Completion | 2020-09-18 |
| Phase | NA |
Why NCT04526925 stopped before completion
NCT04526925 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 10 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (99% lower).
The record links to 0 conditions, and to 2 interventions - of which Respiratory filter in-line placed with the standard mouthpiece is the first listed.
NCT04526925 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT04526925 about?
NCT04526925 is a clinical study titled "The Effects of Filter During CPET on WOB and Aerosol Particle Concentrations". Due to the concerns of virus transmission during COVID-19 pandemic, multiple respiratory societies postpone or limit pulmonary function test, especially cardiopulmonary exercise test (CPET), as patients may generate large amount of aerosol particles during test but it is conventionally performed wit...
What is the current status of trial NCT04526925?
This trial is currently terminated. It is a NA study. The enrollment target is 10 participants. The study started on 2020-08-29. Estimated completion is 2020-09-18.
What interventions are being tested in trial NCT04526925?
The interventions under investigation include: Respiratory filter in-line placed with the standard mouthpiece (DEVICE), Standard mouthpiece (OTHER).
Who is sponsoring clinical trial NCT04526925?
This trial is sponsored by Rush University Medical Center, which has 320 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT04526925's enrollment target sits among peer trials
10 1927th of 2000 higher than 26 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA 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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