Vascular Diseases
Conditions
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.
Interventions
None listed
Sponsors
Hospital Privado de Comunidad de Mar del Plata
Study design
Observational model
CASE_ONLY
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
20 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
* Written Inform Consent * Programmed surgery * Supine position
Exclusion criteria
* Emergency surgery * Peripheral vascular diseases
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Accuracy of photoplethysmography for the assessment of systemic vascular tone | 5 hours | Comparison between pletysmography with the reference Doppler method |
Countries
Argentina
Outcome results
None listed