• Simon Gates, Jessica L Smith, Giok J Ong, Samantha J Brace, and Gavin D Perkins.
• Warwick Clinical Trials Unit, Division of Health Sciences, Warwick Medical School, The University of Warwick, Coventry CV4 7AL, UK. s.gates@warwick.ac.uk
• Heart. 2012 Jun 1;98(12):908-13.

ContextThe LUCAS mechanical chest compression device may be better than manual chest compression during resuscitation attempts after cardiac arrest.ObjectiveTo summarise the evidence about the effectiveness of LUCAS.Data SourcesSearches of 4 electronic databases, reference lists of included studies, review articles, clinical guidelines, and the manufacturer's web site. No language restrictions were applied. Date of last search: September 2011.Study SelectionAll studies, of any design, comparing mechanical chest compression using LUCAS with manual chest compression, with human or animal subjects. Studies published only as abstracts were included. Manikin studies, and case reports or case series, were excluded.Data ExtractionData were extracted on study methodology and outcomes, including return of spontaneous circulation, survival, injuries caused by resuscitation, and physiological parameters.Results22 papers reporting 16 separate studies were included. There was one randomised trial, nine cohort studies, 2 before/after studies and 4 animal studies. No meta-analyses were performed because of high risk of bias and heterogeneity in the study designs. Animal studies suggested an advantage to LUCAS in terms of physiological parameters, but human studies did not suggest an advantage in ROSC or survival. Existing evidence is low quality because most studies were small and many were poorly reported.ConclusionsThere is insufficient evidence to make any recommendations for clinical practice. Large scale, high quality randomised trials of LUCAS are needed. Studies that have so far been published only as abstracts should be reported fully.

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