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10.1002-hep.20062Figure2.pptx.ppt
- 1. The hepatic venous pressure gradient: Anything worth doing should be done right Hepatology, Volume: 39, Issue: 2, Pages: 280-283, First published: 30 January 2004, DOI: (10.1002/hep.20062)
Editor's Notes
- The pressure transducer needs to be calibrated carefully against known external pressure. (Top), a 13.6‐cm and a 27.2‐cm column of water are used to calibrate the transducer to 10 and 20 mm Hg, respectively. Pressure readings are obtained by averaging values of stable tracings as shown in the highlighted area. We use the arithmetic function built into the tracing recorder to calculate the mean pressures for the inferior vena cava (IVC), FHVP, and WHVP. A stable tracing of 45 to 60 seconds is necessary for WHVP measurement whereas a tracing of 15 to 20 seconds is adequate for IVC and FHVP measurement. IF THIS IMAGE HAS BEEN PROVIDED BY OR IS OWNED BY A THIRD PARTY, AS INDICATED IN THE CAPTION LINE, THEN FURTHER PERMISSION MAY BE NEEDED BEFORE ANY FURTHER USE. PLEASE CONTACT WILEY'S PERMISSIONS DEPARTMENT ON PERMISSIONS@WILEY.COM OR USE THE RIGHTSLINK SERVICE BY CLICKING ON THE 'REQUEST PERMISSIONS' LINK ACCOMPANYING THIS ARTICLE. WILEY OR AUTHOR OWNED IMAGES MAY BE USED FOR NON-COMMERCIAL PURPOSES, SUBJECT TO PROPER CITATION OF THE ARTICLE, AUTHOR, AND PUBLISHER.