2023-08-29 19:22:50
Researchers from Nordsjaellands Hospital in Denmark have shown that in adult victims of an out-of-hospital cardiac arrest, survival at 30 days was significantly greater in those who received cardiopulmonary resuscitation and external defibrillation by passers-by before help arrived. These data were presented in Amsterdam during the European Society of Cardiology Congress 20231.
If blood flow is not immediately restored following cardiac arrest, death can occur within 10 to 20 minutes. It is therefore important that those present intervene quickly by performing cardiopulmonary resuscitation and restarting the heart using an automated external defibrillator (AED), while alerting the rescue teams.
“Abundant research has shown that defibrillators save lives when used in cardiac arrest and pose no safety concerns for laypersons. It is also known that defibrillation is most effective when “It’s done early and done correctly. It’s absolutely necessary to start training people in the use of defibrillators,” said cardiologist Mathias Hindborg of Nordsjaellands Hospital, Denmark, and lead author of the study.
The research involved 7,471 adults from the Danish Cardiac Arrest Registry who suffered out-of-hospital cardiac arrest and were treated with bystander cardiopulmonary resuscitation until help arrived within 25 minutes. About 15% of the subjects in this group also received defibrillation before help arrived. The team found that a greater proportion of patients who did or did not receive defibrillation (44.5% versus 18.8%) survived up to 30 days following the heart attack.
More importantly, the survival rate was 37% higher in the group that received defibrillation, even when rescue response time was only 2-4 minutes, compared to the group that did not receive defibrillation. . The greatest positive impact on survival was observed when rescuers took 6 to 8 minutes to arrive.
“This study is important because it might help guide the introduction of more effective defibrillators in society in the future,” Hindborg told Univadis.com. “The importance of bystander defibrillation is lessened, however, when response times are very long, as longer resuscitation is associated with poorer outcomes.”
Hindborg believes AEDs will slowly gain popularity in both urban and rural areas. “Many lives can be saved if bystanders are able to intervene by performing defibrillation. In many settings, including rural areas of Denmark, this process is facilitated by the intervention of lay volunteers called “heartrunners “, which are sent via a smartphone application to retrieve a nearby defibrillator and bring it to the scene of the cardiac arrest,” he said.
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