Accuracy of Photoplethysmography to Detect Changes in Vascular Tone: a Doppler Study
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Vascular Diseases
- Sponsor
- Hospital Privado de Comunidad de Mar del Plata
- Enrollment
- 50
- Locations
- 1
- Primary Endpoint
- Accuracy of photoplethysmography for the assessment of systemic vascular tone
- Status
- Completed
- Last Updated
- 7 years ago
Overview
Brief Summary
Changes in the vascular tone of anesthetized patients is common and cause hemodynamic problems. The monitoring of such changes in vascular resistance using simple and non-invasive tools is lacking. The present study was designed to determine if photoplethysmography can detect changes in the systemic vascular resistance using Doppler as the reference method.
Detailed Description
This is a prospective and observational study designed to test the reliability of photoplethysmography to diagnose changes in the vascular resistance during anesthesia. The investigators will studied 50 mechanically ventilated patients undergoing general anesthesia. Photoplethysmography will be continuously recorded in the right thumb during anesthesia. Duplex color and power Doppler will measure flow in the radial artery of the right hand.The contour analysis of both, photoplethysmogram and radial artery flow will be analyzed, correlated and compared using the Bland-Altman plot.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Written Inform Consent
- •Programmed surgery
- •Supine position
Exclusion Criteria
- •Emergency surgery
- •Peripheral vascular diseases
Outcomes
Primary Outcomes
Accuracy of photoplethysmography for the assessment of systemic vascular tone
Time Frame: 5 hours
Comparison between pletysmography with the reference Doppler method