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NCT04783688 · ClinicalTrials.gov registry record · NA
Evaluation of Full Face Snorkel Masks (FFSMs)
A NA study, sponsored by Duke University.
- Completed
- Registry status
- NA
- Development phase
- 10
- Enrollment target
NCT04783688: Completed NA study, sponsored by Duke University.
NCT04783688 is a NA study that has completed, run by Duke University. 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
NCT04783688, a NA study, has completed, sponsored by Duke University.
- COMPLETED
- Registry status
- NA
- Development phase
- 10 participants
- Enrollment target
Study Summary
Recently, multiple models of Full Face Snorkel Mask (FFSM) have entered the retail market. However, several fatalities have been reported to the non-profit agency Divers Alert Network (DAN) for snorkelers who were using FFSMs, and most of these fatality reports have unclear or unreported causes of death. This project is to determine the characteristics of the FFSMs when they are in use by snorkelers. Volunteers will be asked to snorkel in a water tank while breathing through several models of commercially available FFSM, one at at time.
Primary Outcome
The breathing gas provided to the snorkeler by the masks will be measured continuously throughout the experiment using a mass spectrometer.
Interventions
- OTHER Full Face Snorkel Mask (FFSM)
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 10 participants |
| Start Date | 2021-03-09 |
| Est. Completion | 2021-06-11 |
| Phase | NA |
What the finished NCT04783688 record still lists
NCT04783688 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 1 intervention - of which Full Face Snorkel Mask (FFSM) is the first listed.
NCT04783688 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT04783688 about?
NCT04783688 is a clinical study titled "Evaluation of Full Face Snorkel Masks (FFSMs)". Recently, multiple models of Full Face Snorkel Mask (FFSM) have entered the retail market. However, several fatalities have been reported to the non-profit agency Divers Alert Network (DAN) for snorkelers who were using FFSMs, and most of these fatality reports have unclear or unreported causes of d...
What is the current status of trial NCT04783688?
This trial is currently completed. It is a NA study. The enrollment target is 10 participants. The study started on 2021-03-09. Estimated completion is 2021-06-11.
What interventions are being tested in trial NCT04783688?
The interventions under investigation include: Full Face Snorkel Mask (FFSM) (OTHER).
Who is sponsoring clinical trial NCT04783688?
This trial is sponsored by Duke University, which has 1,725 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT04783688'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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