Exertional heatstroke
Other than the study mentioned above [30], no study describing
the use of the evaporative cooling technique in exertional
heatstroke was found (Table 2).
Classic heatstroke
Five studies comprising 247 patients treated by evaporative
cooling techniques, either conventional or by using a specially
designed cooling bed, were identified [22,23,25-27]. Table 4
presents a summary of data on cooling methods based on
evaporation in the treatment of classic heatstroke.
Conventional evaporative cooling
This consists of applying gauze sheets wetted with water at
20°C to 40°C and fanning air at room temperature. In a case
series of 14 patients of a mean age of 66 years and who had
associated comorbid illnesses, cooling by evaporation using
water at 40°C and fan ventilation enabled cooling in 34 to 89
minutes, with only one fatality and no morbidity in survivors
[25]. In this study, the evaporative method was combined with
conductive techniques, namely cooling blanket, gastric,
colonic and bladder lavage with iced saline, and intravenous
administration of chilled solutions; thus the relative contribution
of each modality was difficult to assess.
Exertional heatstrokeOther than the study mentioned above [30], no study describingthe use of the evaporative cooling technique in exertionalheatstroke was found (Table 2).Classic heatstrokeFive studies comprising 247 patients treated by evaporativecooling techniques, either conventional or by using a speciallydesigned cooling bed, were identified [22,23,25-27]. Table 4presents a summary of data on cooling methods based onevaporation in the treatment of classic heatstroke.Conventional evaporative coolingThis consists of applying gauze sheets wetted with water at20°C to 40°C and fanning air at room temperature. In a caseseries of 14 patients of a mean age of 66 years and who hadassociated comorbid illnesses, cooling by evaporation usingwater at 40°C and fan ventilation enabled cooling in 34 to 89minutes, with only one fatality and no morbidity in survivors[25]. In this study, the evaporative method was combined withconductive techniques, namely cooling blanket, gastric,colonic and bladder lavage with iced saline, and intravenousadministration of chilled solutions; thus the relative contributionof each modality was difficult to assess.
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