Assessment of Venous Function Using Photoplethysmography: Laboratory Setup
- Author:
Tai Ho IM
1
;
Hong Gi LEE
;
Hong Kyu BAIK
;
Hwon Kyum PARK
;
Young Soo NAM
;
Oh Jung KWON
;
Kwang Soo LEE
;
Jin Young KWAK
Author Information
1. Department of Surgery Hanyang University, College of Medicine, Korea.
- Publication Type:Original Article
- Keywords:
Photoplethysmography;
Vein;
Function
- MeSH:
Exercise;
Extremities;
Hemodynamics;
Hydrostatic Pressure;
Leg;
Photoplethysmography;
Plethysmography;
Vascular Diseases;
Veins
- From:Journal of the Korean Society for Vascular Surgery
1997;13(2):248-252
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACLGROUND: It is essential to evaluate hemodynamics of vascular disease in addition to anatomic details. It has been known that the plethysmography represents intravascular(arterial or venous) volume or pressure. Photoplethysmography(PPG) is convenient to use and has been widely used for measurement of venous refill time(VRT). However, it has not been used for evaluation of venous function. OBJECTIVE: Our study aims at testing the feasibility of evaluation of venous function using PPG. METHODS: The maneuver established for air PG was slightly modified and applied for the PPG. The test was performed with the object seated in a chair and the legs dependent. The PPG probe was attached to the limbs within 5 cm from medial malleolus. After standardized procedure of leg-raising, putting the leg in dependent position, 1 tip-toe exercise, and 10 tip-toe exercises, the measured parameters were initial emptying time(E1), amount of volume change(V1), refilling time by hydrostatic pressure(F1), refilling time after 1 tip-toe exercise(F2), and ejected volume(V2) and refilling time after 10tip-toe exercises(F3).
