Exertional heatstroke: early recognition and outcome with aggressive combined cooling--a 12-year experience

To determine the clinical outcomes of an aggressive combined cooling technique for exertional heatstroke in Thailand. We analyzed patients who were diagnosed with exertional heatstroke between 1995 and 2007. Outcomes were assessed both in hospital and at 3 months follow-up. Twenty-eight cases of exe...

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Bibliographic Details
Published in:	Military medicine Vol. 174; no. 5; pp. 496 - 502
Main Authors:	Sithinamsuwan, Pasiri, Piyavechviratana, Kunchit, Kitthaweesin, Thitisak, Chusri, Watcharapong, Orrawanhanothai, Patima, Wongsa, Adisorn, Wattanathum, Anan, Chinvarun, Yotin, Nidhinandana, Samart, Satirapoj, Bancha, Supasyndh, Ouppatham, Sriswasdi, Chantrapa, Prayoonwiwat, Wichai
Format:	Journal Article
Language:	English
Published:	England Oxford University Press 01-05-2009
Subjects:	Adult Body Temperature Chi-Square Distribution Cold Temperature Coma Cooling Disseminated Intravascular Coagulation - diagnosis Disseminated Intravascular Coagulation - etiology Disseminated Intravascular Coagulation - mortality Disseminated Intravascular Coagulation - therapy Emergency medical care Fatalities Heat Stroke - complications Heat Stroke - diagnosis Heat Stroke - mortality Heat Stroke - therapy Heatstroke Hospital Mortality Hospitals, Military Humans Hyperthermia Infections Laboratories Male Military Medicine - methods Mortality Patients Physical Exertion Statistics, Nonparametric Thailand Treatment Outcome Thailand
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Summary:	To determine the clinical outcomes of an aggressive combined cooling technique for exertional heatstroke in Thailand. We analyzed patients who were diagnosed with exertional heatstroke between 1995 and 2007. Outcomes were assessed both in hospital and at 3 months follow-up. Twenty-eight cases of exertional heatstroke presented to Phramongkutklao Army Hospital over 12 years. All patients developed multiorgan dysfunction and encephalopathy. Twenty-four cases had acute renal failure, 7 of whom required dialysis. Disseminated intravascular coagulation (DIC) was detected in 9 patients (32.1%). In-hospital mortality was 7.1%. Most survivors recovered with nearly normal organ function. However, 9 exhibited prolonged neurologic dysfunction and 2 had chronic renal dysfunction requiring hemodialysis. At 3-month follow-up, neurologic and renal dysfunction in those patients persisted. Higher serum prothrombin time and DIC correlated to fatality. The patients whose core body temperature achieved 38 degrees C within 3 hours revealed a significantly lower DIC and twice as low in the frequency of poor outcome than the patients cooled longer than 3 hours to reduce core body temperature to 38 degrees C. Despite early recognition and aggressive combined cooling, exertional heatstroke remains associated with multiorgan dysfunction. However, our 7.1% in-hospital mortality rate was low compared to previous studies. Early diagnosis and prompt treatment are critical.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2
ISSN:	0026-4075 1930-613X
DOI:	10.7205/MILMED-D-02-5908