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Title of Journal: Eur J Appl Physiol

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Abbravation: European Journal of Applied Physiology

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Springer-Verlag

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DOI

10.1007/s10637-009-9277-x

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1439-6327

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Effects of altitude exposure on brain natriuretic

Authors: David Woods Tim Hooper Pete Hodkinson Steve Ball Rob Wakeford Bob Peaston Claire Bairsto Nic Green Adrian Mellor
Publish Date: 2011/03/11
Volume: 111, Issue: 11, Pages: 2687-2693
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Abstract

Acute mountain sickness AMS is common at high altitude HA and associated with a relative failure of the natriuresis and diuresis that occurs at HA The role of Brain Natriuretic Peptide BNP in this context has not been thoroughly investigated We aimed to clarify if BNP rises in response to exercise at HA and if so whether this is related to AMS 32 healthy subjects had assessments of BNP aldosterone and AMS scores as assessed by the AMSC score of the Environmental Symptom Questionnaire ESQ and Lake Louise questionnaire made following exertion at sealevel SL 3400 4300 and 5150 m Data were analysed in the 23 subjects who did not consume drugs known to affect acclimatization BNP pg/ml mean ± SEM was significantly higher at 5150 m versus the lower altitudes p  0001 for all 71 ± 1 61 ± 03 68 ± 09 and 177 ± 51 at sealevel 3400 4300 and 5150 m In those that showed a BNP response at 5150 m n = 19 versus those that did not demonstrate a BNP response n = 4 there was a significant difference in Lake Louise LL AMS scores at 5150 m on day 10 of the expedition mean LL score 33 vs 075 p = 0034 and day 11 mean LL score 33 vs 0 p = 0003 This is the first report to demonstrate a significant rise in BNP at HA A BNP response at 5150 m may be associated with a greater likelihood of suffering AMSWe would like to thank all members of the Exercise Imja Tse team from the Defence Medical Services This research was supported by The Drummond Foundation And many thanks to The Research Department of the Faculty of Health Birmingham City University for contributing to the costs of the expedition and Inverness Medical Alere UK Ltd for the unconditional loan of the Biosite Triage machines

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