Using a defibrillator for a cardiac arrest victim improves 30-day survival even with ambulance response times as short as two minutes, according to research presented at ESC Congress 2023.
The majority of sudden cardiac arrests occur in the community. A cardiac arrhythmia, called ventricular fibrillation, causes the heart to cease pumping and blood flow stops. If blood flow is not restored quickly, the individual passes out and dies within 10 to 20 minutes. Members of the public can help by calling an ambulance and performing chest compressions while asking someone else to find a defibrillator.
The researchers compared the probability of survival between patients that had been defibrillated by a bystander prior to the ambulance's arrival and those that had not. The difference was measured for eight different intervals of ambulance response time. The analyses were adjusted for factors that could influence the relationship including age, sex, place of arrest and other medical conditions such as prior heart attack or stroke.
Patients receiving bystander defibrillation were more likely to survive to 30 days compared to those who did not receive bystander defibrillation for all intervals of ambulance arrival time except 0 to 2 minutes, where the increase did not reach statistical significance.
Belgique Dernières Nouvelles, Belgique Actualités
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