Trials / Completed
CompletedNCT03032939
The Effect of Tracheal Intubation on AC and DC Components of a Photoplethysmograph
The Effect of Tracheal Intubation Induced Autonomic Response on Photoplethysmography
- Status
- Completed
- Phase
- —
- Study type
- Observational
- Enrollment
- 35 (actual)
- Sponsor
- University of California, San Francisco · Academic / Other
- Sex
- All
- Age
- 18 Years
- Healthy volunteers
- Not accepted
Summary
Intraoperative stress responses (vasoconstriction and changes in heart rate) and postoperative pain can be monitored using photoplethysmography (PPG). PPG measures changes in tissue volume noninvasively. Therefore it can measure acute changes in arterial diameter (vasoconstriction). PPG signal has two components, AC and DC. Effects of noxious stimuli-induced stress responses (vasoconstriction) have not been studied on the DC component of PPG. The aim of this study was to investigate the effect of a known noxious stimulus (endotracheal intubation) on both the AC and DC components of PPG.
Conditions
Interventions
| Type | Name | Description |
|---|---|---|
| PROCEDURE | endotracheal intubation | standard endotracheal intubation of surgical patients after induction of anesthesia |
Timeline
- Start date
- 2007-12-18
- Primary completion
- 2012-01-30
- Completion
- 2015-01-30
- First posted
- 2017-01-26
- Last updated
- 2017-01-26
Source: ClinicalTrials.gov record NCT03032939. Inclusion in this directory is not an endorsement.