Cooling therapy for acute stroke
Abstract
BACKGROUND: Increased body temperatures are common in patients with acute stroke and are associated with poor outcome. In animal models of focal cerebral ischaemia, temperature-lowering therapy reduces infarct volume. In patients with acute stroke, lowering temperature may therefore improve outcome. This is an update of a Cochrane review first published in 1999.
OBJECTIVES: To assess the effects of pharmacological and physical strategies to reduce body or brain temperature in patients with acute stroke.
SEARCH STRATEGY: We searched the Cochrane Stroke Group trials register (last searched December 2007). In addition, we searched MEDLINE and EMBASE (January 1998 to December 2007). We scanned references and contacted authors of included trials. For the previous version of this review, the authors contacted pharmaceutical companies and manufactures of cooling equipment in this field.
SELECTION CRITERIA: We considered all completed randomised or non-randomised controlled clinical trials, published or unpublished, where pharmacological or physical strategies or both to reduce temperature were applied in patients with acute ischaemic stroke or intracerebral haemorrhage. Outcome measures were death or dependency (modified Rankin Scale score >/= 3) at the end of follow up, and adverse effects.
DATA COLLECTION AND ANALYSIS: Two review authors independently applied the inclusion criteria, assessed trial quality, and extracted and cross-checked the data.
MAIN RESULTS: We included five…
How strong is the evidence?
Evidence Hub reads this as a meta-analysis, done in people. Its evidence level is 1 of 5 (Highest · pooled evidence). Pooled evidence from several studies sits at the top of the evidence pyramid. Reported size: 423 participants or records.
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