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: Non-invasive stroke volume measurement and passive leg raising predict volume responsiveness in medical ICU patients: an observational cohort study. | Available online http content 13 4 R111 Research Non-invasive stroke volume measurement and passive leg raising predict volume responsiveness in medical ICU patients an observational cohort study Steven W Thiel Marin H Kollef and Warren Isakow Open Access Pulmonary and Critical Care Division Washington University School of Medicine Campus Box 8052 660 South Euclid Avenue St. Louis MO 63110 USA Corresponding author Warren Isakow wisakow@ Received 19 May 2009 Revisions requested 22 Jun 2009 Revisions received 25 Jun 2009 Accepted 8 Jul 2009 Published 8 Jul 2009 Critical Care 2009 13 R111 doi cc7955 This article is online at http content 13 4 R111 2009 Thiel 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. Abstract Introduction The assessment of volume responsiveness and the decision to administer a fluid bolus is a common dilemma facing physicians caring for critically ill patients. Static markers of cardiac preload are poor predictors of volume responsiveness and dynamic markers are often limited by the presence of spontaneous respirations or cardiac arrhythmias. Passive leg raising PLR represents an endogenous volume challenge that can be used to predict fluid responsiveness. Methods Medical intensive care unit ICU patients requiring volume expansion were eligible for enrollment. Non-invasive measurements of stroke volume SV were obtained before and during PLR using a transthoracic Doppler ultrasound device prior to volume expansion. Measurements were then repeated following volume challenge to classify patients as either volume responders or non-responders based on their hemodynamic response to volume expansion. The change in SV from baseline during PLR was then compared .
