Head-down tilt

From Citizendium
Revision as of 09:05, 6 October 2010 by imported>John Stephenson ({{subpages}})
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search
This article is a stub and thus not approved.
Main Article
Discussion
Definition [?]
Related Articles  [?]
Bibliography  [?]
External Links  [?]
Citable Version  [?]
 
This editable Main Article is under development and subject to a disclaimer.

In medicine, the head-down tilt position, also called the Trendelenburg position, is "posture while lying with the head lower than the rest of the body. Extended time in this position is associated with temporary physiologic disturbances."[1]

Predicting increase in cardiac stroke volume after intravenous infusion of 500 cm of fluids
Finding after passive leg raising Sensitivity Specificity
Increase ≥ 9% in pulse pressure as measured by radial arterial catheter 79% 85%
Increase ≥ 8% in femoral artery blood flow as measured by Doppler ultrasonography 86% 80%
Increase ≥ 10% in stroke volume as measured by bedside echocardiography 86% 90%

The hemodynamic response to passive leg raising during physical examination, or at least with use of a radial artery catheter, can help predict whether a patient in shock will respond to intravenous infusion of fluids.[2]

References