tailieunhanh - Báo cáo y học: "Of hemorrhagic shock, spherical cows and Aloe vera"

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care cung cấp cho các bạn kiến thức về ngành y đề tài: Of hemorrhagic shock, spherical cows and Aloe vera. | Critical Care December 2004 Vol 8 No 6 Gutierrez and Fuller Commentary Of hemorrhagic shock spherical cows and Aloe vera Guillermo Gutierrez1 and Stephanie P Fuller2 1 Professor of Medicine and Anesthesiology Pulmonary and Critical Care Medicine Division Department of Medicine The George Washington University Medical Center Washington DC USA 2Fellow Cardio-Thoracic Division Department of Surgery The George Washington University Medical Center Washington DC USA Corresponding author Guillermo Gutierrez ggutierrez@ Published online 7 October 2004 This article is online at http content 8 6 406 2004 BioMed Central Ltd Critical Care 2004 8 406-407 DOI cc2975 Abstract The central question explored in this commentary is whether the beneficial effects of an Aloe vera derived drag-reducing polymer during hemorrhagic shock is due to its O2 radical scavenging properties or to changes in blood rheology. Keywords blood flow hemorrhagic shock ischemia-reperfusion microcirculation oxygen radical species Some time ago the citizens of a country whose livelihood depended on exporting dairy products pooled their resources and hired a world-famous engineering firm to help them increase milk production. After several months of field measurements calculations and at great cost to the inhabitants the consultants produced a much anticipated report that began Our calculations show that milk production by cows is physically impossible. Based on the assumption that cows are spherical. The moral of the story is that the application of physical principles to complex living organisms often requires assumptions ad absurdum. The idea of using small volumes of fluid for the initial resuscitation of victims after major blood loss is of great interest to emergency personnel medics in the armed forces and unfortunately to first responders treating mass casualties from terrorist attacks. In a recent study by Macias and colleagues 1 rats subjected to profound hemorrhagic .

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