Photoplethysmography Detects Changes in Vascular Tone

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.

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Key information

Conditions

Vascular Diseases Cardiovascular Diseases

Age range

20 year–80 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Hospital Privado de Comunidad

Mar del Plata, Buenos Aires, 7600, Argentina

About this study

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.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Written Inform Consent
Programmed surgery
Supine position

Exclusion criteria

Emergency surgery
Peripheral vascular diseases

Treatment and study plan

Primary outcomes

Accuracy of photoplethysmography for the assessment of systemic vascular tone

Time frame: 5 hours

Comparison between pletysmography with the reference Doppler method

Sponsors and collaborators

Lead sponsor

Hospital Privado de Comunidad de Mar del Plata

Other

Registry information

Official study title

Accuracy of Photoplethysmography to Detect Changes in Vascular Tone: a Doppler Study

Important dates

Study start: 2017
Primary completion: 2018
Study completion: 2018
First posted: Aug 4, 2016
Registry last updated: Oct 3, 2018

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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Completed