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NCT03648853 · ClinicalTrials.gov registry record · NA
Effect of Location of Tetanic Stimuli on Photoplethysmogram
A NA study, sponsored by University of California, San Francisco.
- Completed
- Registry status
- NA
- Development phase
- 12
- Enrollment target
NCT03648853: Completed NA study, sponsored by University of California, San Francisco.
NCT03648853 is a NA study that has completed, run by University of California, San Francisco. The registered enrollment target is 12 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
NCT03648853, a NA study, has completed, sponsored by University of California, San Francisco.
- COMPLETED
- Registry status
- NA
- Development phase
- 12 participants
- Enrollment target
Study Summary
The effect of the location of tetanic stimulus on photoplethysmography signals will be studies in patients under general anesthesia.
Primary Outcome
Change in the PPG signal in response to tetanic stimulus. A tetanic stimulus will cause vasoconstriction which can be recorded as a decrease in PPG AC/DC. The outcome measure is the maximum decrease in AC/DC from baseline. Maximum decrease happens typically in 30-60 seconds after the stimulus. Thus, data was collected immediately before (baseline) and for 2 min after the stimulus. After the stimulus AC/DC values return to baseline in a few minutes. Baseline AC/DC measures a relative state of blo
Interventions
- DEVICE Tetanic Stimulus
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 12 participants |
| Start Date | 2018-09-01 |
| Est. Completion | 2018-11-30 |
| Phase | NA |
What the finished NCT03648853 record still lists
NCT03648853 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 12 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 Tetanic Stimulus is the first listed.
NCT03648853 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT03648853 about?
NCT03648853 is a clinical study titled "Effect of Location of Tetanic Stimuli on Photoplethysmogram". The effect of the location of tetanic stimulus on photoplethysmography signals will be studies in patients under general anesthesia.
What is the current status of trial NCT03648853?
This trial is currently completed. It is a NA study. The enrollment target is 12 participants. The study started on 2018-09-01. Estimated completion is 2018-11-30.
What interventions are being tested in trial NCT03648853?
The interventions under investigation include: Tetanic Stimulus (DEVICE).
Who is sponsoring clinical trial NCT03648853?
This trial is sponsored by University of California, San Francisco, which has 1,713 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT03648853's enrollment target sits among peer trials
12 1913th of 2000 higher than 74 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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