Caudwell Xtreme Everest: a field study of human adaptation to hypoxia

Critical Care - Tập 11 - Trang 1-2 - 2007
Mike Grocott1, Alan Richardson2, Hugh Montgomery1, Monty Mythen1
1Centre for Altitude, Space and Extreme Environment Medicine (CASE Medicine), UCL Institute of Human Health and Performance, Ground Floor, Charterhouse Building, UCL Archway Campus, London, UK
2Chelsea School, University of Brighton, Eastbourne, UK

Tóm tắt

Caudwell Xtreme Everest (CXE) is a large healthy volunteer field study investigating human adaptation to environmental hypoxia. More than 200 individuals were studied at sea-level and in four laboratories on the trek to Everest Base Camp (5,300 m). Fifteen physicians climbed high on Everest and continued the studies as they ascended; eight of these individuals reached the summit of Everest and succeeded in sampling arterial blood at 8,400 m on their descent. Core measurements included cardiopulmonary exercise testing, neuropsychological assessment, near infra-red spectroscopy of brain and exercising muscle, blood markers and daily recording of simple physiological variables. The goal of CXE is to further our understanding of human adaptation to cellular hypoxia, a fundamental mechanism of injury in critical illness, with the aim of improving the care of critically ill patients.

Tài liệu tham khảo

Caudwell Xtreme Everest[http://www.xtreme-everest.co.uk] Fink MP: Bench-to-bedside review: cytopathic hypoxia. Crit Care 2002, 6: 491-499. 10.1186/cc1824 Protti A, Singer M: Bench-to-bedside review: potential strategies to protect or reverse mitochondrial dysfunction in sepsis-induced organ failure. Crit Care 2006, 10: 228. 10.1186/cc5014 Hayes MA, Yau EH, Timmins AC, Hinds CJ, Watson D: Response of critically ill patients to treatment aimed at achieving supra-normal oxygen delivery and consumption. Relationship to outcome. Chest 1993, 103: 886-895. Pearse R, Dawson D, Fawcett J, Rhodes A, Grounds RM, Bennett ED: Early goal-directed therapy after major surgery reduces complications and duration of hospital stay. A randomised, controlled trial. Crit Care 2005, 9: R687-R693. 10.1186/cc3887 Rivers E, Nguyen B, Havstad S, Ressler J, Muzzin A, Knoblich B, Peterson E, Tomlanovich M, Early Goal-Directed Therapy Collaborative Group: Early goal-directed therapy in the treatment of severe sepsis and septic shock. N Engl J Med 2001, 345: 1368-1377. 10.1056/NEJMoa010307 Grocott M, Montgomery H, Vercueil A: High-altitude physiology and pathophysiology: implications and relevance for intensive care medicine. Crit Care 2007, 11: 203. 10.1186/cc5142 Marshall RP, Webb S, Bellingan GJ, Montgomery HE, Chaudhari B, McAnulty RJ, Humphries SE, Hill MR, Laurent GJ: Angiotensin converting enzyme insertion/deletion polymorphism is associated with susceptibility and outcome in acute respiratory distress syndrome. Am J Respir Crit Care Med 2002, 166: 646-650. 10.1164/rccm.2108086 Montgomery H, Clarkson P, Barnard M, Bell J, Brynes A, Dollery C, Hajnal J, Hemingway H, Mercer D, Jarman P, et al.: Angiotensin-converting-enzyme gene insertion/deletion polymorphism and response to physical training. Lancet 1999, 353: 541-545. 10.1016/S0140-6736(98)07131-1 Tsianos G, Eleftheriou KI, Hawe E, Woolrich L, Watt M, Watt I, Peacock A, Montgomery H, Grant S: Performance at altitude and angiotensin I-converting enzyme genotype. Eur J Appl Physiol 2005, 93: 630-633. 10.1007/s00421-004-1284-1