The survival benefit of bystander cardiopulmonary resuscitation in a paramedic served metropolitan area.
P M Guzy,
M L Pearce and
S Greenfield
We investigated the survival benefit bystander cardiopulmonaryresuscitation (CPR) for out-of-hospital emergencies in a paramedicserved area of metropolitan Los Angeles. Clinical informationfor all events occurring between January 1 and December 31,1978 was obtained from paramedic report forms and hospital medicalrecords. Bystander CPR was performed for 93 cases and, of these,20 (22 per cent) survived to hospital discharge, as comparedto 7 (5 per cent) of the 150 patients not receiving bystanderCPR (p less than 0.001). Twelve (27 per cent) of the 45 patientsin ventricular fibrillation (VF) who had bystander CPR survived,as compared to 4 (6 per cent) of 70 VF patients without bystanderCPR (p less than 0.01). We conclude that bystander CPR, initiatedprior to arrival of paramedics, produced a fourfold improvementin survival. Overall there was a 10 per cent survival rate athospital discharge. Survival rates reported from Seattle maynot necessarily be generalized to larger cities.
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