Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Ability of pleth variability index to detect hemodynamic changes induced by passive leg raising in spontaneously breathing volunteers. | Available online http content 1 2 2 R37 Research Ability of pleth variability index to detect hemodynamic changes induced by passive leg raising in spontaneously breathing volunteers Geoffray Keller1 Emmanuel Cassar2 Olivier Desebbe1 Jean-Jacques Lehot1 and Maxime Cannesson1 1 Hospices Civils de Lyon Groupement Hospitalier Est Department of Anesthesiology and Intensive Care Louis Pradel Hospital and Claude Bernard Lyon 1 University INSERM ERI 22 28 avenue du doyen Lépine 69500 Bron-Lyon France 2Hospices Civils de Lyon Groupement Hospitalier Est Department of Cardiology Louis Pradel Hospital and Claude Bernard Lyon 1 University 28 avenue du doyen Lépine 69500 Bron-Lyon France Corresponding author Maxime Cannesson maxime_cannesson@ Received 14 Dec 2007 Revisions requested 1 Feb 2008 Revisions received 5 Feb 2008 Accepted 6 Mar 2008 Published 6 Mar 2008 Critical Care 2008 12 R37 doi cc6822 This article is online at http content 12 2 R37 2008 Keller et al. licensee BioMed Central Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Open Access Abstract Introduction Pleth Variability Index PVI is a new algorithm that allows continuous and automatic estimation of respiratory variations in the pulse oximeter waveform amplitude. Our aim was to test its ability to detect changes in preload induced by passive leg raising PLR in spontaneously breathing volunteers. Methods We conducted a prospective observational study. Twenty-five spontaneously breathing volunteers were enrolled. PVI heart rate and noninvasive arterial pressure were recorded. Cardiac output was assessed using transthoracic echocardiography. Volunteers were studied in three successive positions baseline semirecumbent position after PLR of 45 with the .
