Hemodynamic effect of full flexion of the hips and knees in the supine position: a comparison with straight leg raising.

Korean journal of anesthesiology
Tae Dong KweonJae-Hyon Bahk

Abstract

Straight raising of the legs in the supine position or Trendelenburg positioning has been used to treat hypotension or shock, but the advantages of these positions are not clear and under debate. We performed a crossover study to evaluate the circulatory effect of full flexion of the hips and knees in the supine position (exaggerated lithotomy), and compare it with straight leg raising. This study was a prospective randomized crossover study from the tertiary care unit at our university hospital. Twenty-two patients scheduled for off-pump coronary artery bypass surgery were enrolled. Induction and maintenance of anesthesia were standardized. Exaggerated lithotomy position or straight leg raising were randomly selected in the supine position. Hemodynamic variables were measured in the following sequence: 10 min after induction, 1, 5, and 10 min following the designated position, and 1 and 5 min after returning to the supine position. Ten min later, the other position was applied to measure the same hemodynamic variables. During the exaggerated lithotomy position, cerebral and coronary perfusion pressure increased significantly (P < 0.01) without a change in cardiac output. During straight leg raising, cardiac output increased at...Continue Reading

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Citations

May 5, 2012·Korean journal of anesthesiology·Young-Cheol Woo
Oct 6, 2017·High Altitude Medicine & Biology·Francesca LanfranconiGiuseppe Andrea Miserocchi
Apr 23, 2019·High Altitude Medicine & Biology·Francesca LanfranconiLucio Tremolizzo
Jul 19, 2017·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·Brian Muirhead, Andrew D H Weiss
Nov 3, 2012·American Journal of Critical Care : an Official Publication, American Association of Critical-Care Nurses·Margo A Halm

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Methods Mentioned

BETA
coronary artery bypass

Software Mentioned

SPSS

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