Study of noninvasive measurement of venous pressure.
- Author:
Shaihong ZHU
1
;
Xunyang LIU
;
Feizhou HUANG
;
Wanpin NIE
;
Bo LIU
;
Ruizheng LI
;
Lifeng CAI
;
Minshi YANG
Author Information
1. Third Xian Ya Hospital of Central South University, Changsha 410013.
- Publication Type:Journal Article
- MeSH:
Animals;
Blood Pressure Determination;
instrumentation;
Dogs;
Equipment Design;
In Vitro Techniques;
Venous Pressure;
physiology
- From:
Journal of Biomedical Engineering
2002;19(1):178-180
- CountryChina
- Language:Chinese
-
Abstract:
A new device that allows noninvasive measurement of venous pressure has been invented in our laboratory and tested for its feasibility and validity. The device consists of four parts: 1. the air infusion system; 2. the pressure sensor gauge; 3. signal transducer and data processing system 4. the fixing apparatus. The correlation between noninvasive pressure and invasive pressure has been studied in vitro test on a saphenous vein model and in vitro test on dog's portal venous system. In vitro and vivo study, an excellent correlation between noninvasive pressure and invasive pressure was obtained(r = 0.99, P < 0.0005; r = 0.97, P < 0.005). These data suggest that the new device allows a noninvasive measurement of venous pressure especially for the large veins such as vena cava, venae pulmonales and esophageal varices.
