Acute cardiovascular response to passive leg raising.
Cardiac output by thoracic bioimpedance, heart rate, BP, oxygen saturation, and transcutaneous oxygen tension were measured at 1-min intervals in 45 patients before and after passive leg raising (PLR). Mean cardiac index increased only 0.09 +/- 0.02 (SEM) L/min.m2 (p less than .001), mean transcutaneous oxygen tension increased 1.6 +/- 0.6 torr (p less than .01), and mean oxygen saturation decreased 0.5 +/- 0.2% (p less than .01) after PLR. There were no significant changes in heart rate or systolic BP. Seven (16%) patients had increased cardiac index greater than 10% after PLR.
Wong
D H
DH
Department of Anesthesiology, University of California, Irvine Medical Center, Orange.
Tremper
K K
KK
Zaccari
J
J
Hajduczek
J
J
Konchigeri
H N
HN
Hufstedler
S M
SM
D000368:Aged; D001785:Blood Gas Monitoring, Transcutaneous; D001794:Blood Pressure; D002302:Cardiac Output; D002307:Cardiography, Impedance; D006321:Heart / Q000502:physiology*; D006339:Heart Rate; D006801:Humans; D007866:Leg; D008875:Middle Aged; D010100:Oxygen / Q000097:blood*; D010313:Partial Pressure; D011187:Posture; D013318:Stroke Volume
D010100:Oxygen