Dissemination of Chest Compression-Only Cardiopulmonary Resuscitation and Survival After Out-of-Hospital Cardiac...

Area of Science:

• Public Health
• Emergency Medicine
• Cardiology

Background:

• The optimal cardiopulmonary resuscitation (CPR) technique for out-of-hospital cardiac arrests (OHCAs) remains a critical public health discussion.
• Previous research primarily focused on individual-level CPR effectiveness, leaving population-level impacts of bystander-initiated chest compression-only CPR (CCCPR) unclear.
• Understanding the widespread effect of CCCPR dissemination on OHCA survival is essential for public health strategies.

Purpose of the Study:

• To evaluate the impact of nationwide CCCPR dissemination on OHCA survival rates at a population level.
• To assess the increase in survival with favorable neurological outcomes attributed to bystander CPR techniques.

Main Methods:

• A nationwide, prospective, population-based observational study was conducted in Japan from January 2005 to December 2012.
• Data included 816,385 OHCA patients, analyzing the incidence of bystander CCCPR and conventional CPR.
• The primary outcome measured was 1-month survival with favorable neurological outcome.

Main Results:

• The proportion of OHCA patients receiving bystander CCCPR increased from 17.4% to 39.3% during the study period.
• Overall bystander CPR (CCCPR or conventional CPR) increased from 34.6% to 47.3%.
• The incidence of 1-month survival with favorable neurological outcome attributed to CCCPR significantly increased from 0.6 to 28.3 per 10 million population.

Conclusions:

• Nationwide dissemination of CCCPR for lay-rescuers in Japan was significantly associated with improved survival rates after OHCAs.
• The findings underscore the importance of public education and widespread implementation of CCCPR for enhancing OHCA outcomes.