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N Engl J Med. 2015 Jun 11;372(24):2316-25. doi: 10.1056/NEJMoa1406038.

Mobile-phone dispatch of laypersons for CPR in out-of-hospital cardiac arrest.

Author information

  • 1From the Department of Medicine, Center for Resuscitation Science, Karolinska Institutet, Solna (M. Ringh, J.H., M.J., D.F., P.N., I.H.-A., G.R., L.S.), the Department of Clinical Sciences, Danderyd University Hospital, Karolinska Institutet, Danderyd (M. Rosenqvist), and the Department of Clinical Science and Education, Karolinska Institutet, Södersjukhuset (H.J.-P.) - all in Stockholm.

Abstract

BACKGROUND:

Cardiopulmonary resuscitation (CPR) performed by bystanders is associated with increased survival rates among persons with out-of-hospital cardiac arrest. We investigated whether rates of bystander-initiated CPR could be increased with the use of a mobile-phone positioning system that could instantly locate mobile-phone users and dispatch lay volunteers who were trained in CPR to a patient nearby with out-of-hospital cardiac arrest.

METHODS:

We conducted a blinded, randomized, controlled trial in Stockholm from April 2012 through December 2013. A mobile-phone positioning system that was activated when ambulance, fire, and police services were dispatched was used to locate trained volunteers who were within 500 m of patients with out-of-hospital cardiac arrest; volunteers were then dispatched to the patients (the intervention group) or not dispatched to them (the control group). The primary outcome was bystander-initiated CPR before the arrival of ambulance, fire, and police services.

RESULTS:

A total of 5989 lay volunteers who were trained in CPR were recruited initially, and overall 9828 were recruited during the study. The mobile-phone positioning system was activated in 667 out-of-hospital cardiac arrests: 46% (306 patients) in the intervention group and 54% (361 patients) in the control group. The rate of bystander-initiated CPR was 62% (188 of 305 patients) in the intervention group and 48% (172 of 360 patients) in the control group (absolute difference for intervention vs. control, 14 percentage points; 95% confidence interval, 6 to 21; P<0.001).

CONCLUSIONS:

A mobile-phone positioning system to dispatch lay volunteers who were trained in CPR was associated with significantly increased rates of bystander-initiated CPR among persons with out-of-hospital cardiac arrest. (Funded by the Swedish Heart-Lung Foundation and Stockholm County; ClinicalTrials.gov number, NCT01789554.).

PMID:
26061836
[PubMed - indexed for MEDLINE]
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