Abstract
Andelius et al (J Am Coll Card 2020;76:43, PMID 32616162) investigated arrival at the out-of-hospital cardiac arrest (OHCA) location of application (app)–dispatched citizen responders before the Emergency Medical Services (EMS) and the association with bystander cardiopulmonary resuscitation (CPR) and defibrillation. Citizen responders located within 1.1 miles from the OHCA location were dispatched to begin CPR or retrieve an automated external defibrillator. OHCA locations where at least 1 citizen responder arrived before EMS were compared with OHCA locations where EMS arrived first. Citizen responders were alerted in 819 suspected OHCAs, of which 438 (53.5%) were confirmed cardiac arrests. At least 1 citizen responder arrived before EMS in 42.0% (n = 184) of all OHCAs. When citizen responders arrived before EMS, the odds for bystander CPR increased (odds ratio [OR] 1.76; P = .027) and the odds for bystander defibrillation more than tripled (OR 3.73; P < .001) compared with OHCAs. The authors conclude that arrival of app-dispatched citizen responders before EMS was associated with increased odds for bystander CPR and a more than 3-fold increase in odds for bystander defibrillation.
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