title: [Study of noninvasive measurement of venous pressure].
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.
authors.affiliation: Third Xian Ya Hospital of Central South University, Changsha 410013.
authors.forename: Shaihong
authors.initials: S
authors.lastname: Zhu
authors.forename: Xunyang
authors.initials: X
authors.lastname: Liu
authors.forename: Feizhou
authors.initials: F
authors.lastname: Huang
authors.forename: Wanpin
authors.initials: W
authors.lastname: Nie
authors.forename: Bo
authors.initials: B
authors.lastname: Liu
authors.forename: Ruizheng
authors.initials: R
authors.lastname: Li
authors.forename: Lifeng
authors.initials: L
authors.lastname: Cai
authors.forename: Minshi
authors.initials: M
authors.lastname: Yang
mesh_terms: D000818:Animals; D001795:Blood Pressure Determination / Q000295:instrumentation*; D004285:Dogs; D004867:Equipment Design; D066298:In Vitro Techniques; D014690:Venous Pressure / Q000502:physiology*