Photoplethysmographic Dichrotic Notch Reflexes Systemic Hemodynamics

Status Recruiting

Clinical Trial Summary

Changes in the vascular tone of anesthetized patients is common and cause hemodynamic problems. The investigators have previously demonstrated that the shape of the pulse oximetry waveform (photoplethysmography) is closely related to the changes observed in systemic vascular resistence. The main change in pulse waveform is based to the dichrotic notch position. The present study was designed to determine if the dichrotic notch position is related to a local or a systemic change in the vascular tone.

Clinical Trial Description

This is a prospective and observational study designed to determine if the changes observed in finger photoplethysmographic waveform of surgical patients is related to a local or a sistemic changes in the vascular tone. The investigators will studied 15 patients undergoing regional brachial plexus anesthesia for upper limb surgeries. Photoplethysmography will be continuously recorded in the thumb of the tested hand (anesthetized hand) and in the thumb of the control, opposite hand. Duplex color and power Doppler will measure flow in the both brachial arteries and in the aorta (supraesternal view). The contour analysis of both, photoplethysmogram and arterial flow velocities will be analyzed, correlated and compared. ;

Study Design

Related Conditions & MeSH terms

Vascular Diseases

Clinical Trial Details

NCT number	NCT04179097
Study type	Observational [Patient Registry]
Source	Hospital Privado de Comunidad de Mar del Plata
Contact	Gerardo Tusman, MD
Phone	54-223-4990074
Email	gtusman@hotmail.com
Status	Recruiting
Phase
Start date	November 5, 2019
Completion date	December 31, 2023

View Details

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