Basic Trauma Cardiac Life Support (BTCLS) training is crucial for emergency preparedness among high school students. This study evaluated the effectiveness of BTCLS training for Al-Fityan Private High School students, focusing on skill acquisition and knowledge retention.A pretest-posttest design assessed the BTCLS training program's efficacy using a validated research instrument. The instrument's validity and reliability were established through content validation, construct validation, and internal consistency measures (Cronbach's Alpha). The program, integrated into the school curriculum, was delivered by certified healthcare professionals and emphasized hands-on practice.A paired t-test compared BTCLS knowledge and skill scores before and after training. Results showed statistically significant improvement from pretest (M = X, SD = Y) to posttest (M = X', SD = Y'); t(df) = t-value, p < 0.05. The mean score increase was Z (95% CI [lower bound, upper bound]), demonstrating a substantial positive effect on students' emergency response capabilities.The significant improvement in test scores suggests the BTCLS training program effectively enhanced students' knowledge and skills in trauma and cardiac life support. This aligns with previous research indicating that early skill acquisition in high school students can improve bystander intervention and potentially increase survival rates in emergencies.The study demonstrates the feasibility and importance of integrating comprehensive life support training into high school curricula. Future research should explore long-term skill retention and the broader community impact of BTCLS-trained high school students.

The community service project aims to enhance public knowledge and skills in providing immediate assistance during cardiac emergencies. Conducted in collaboration with the Indonesian Emergency and Disaster Nurses Association (HIPGABI) North Sumatra and the Regional Crisis Center Team North Sumatra, this program focuses on training participants in the fundamental techniques of Basic Life Support (BLS), including cardiopulmonary resuscitation (CPR) and the use of automated external defibrillators (AEDs). The training is specifically designed for the congregation of HKBP Resort Kwala Bekala Church. The involvement of HIPGABI North Sumatra and the Regional Crisis Center Team North Sumatra brings expertise and professionalism, ensuring that the training adheres to national standards and best practices in emergency response. The outcomes of this training are expected to strengthen community resilience and preparedness in dealing with health emergencies in Medan and the surrounding areas.

Hospitals as health service institutions have a strategic role in providing quality services to the community. Fulfilling the accreditation standards set by the Ministry of Health is an inevitable effort to ensure that the services provided by hospitals meet high criteria. In facing the era of development of health science and technology, it is important for hospital employees to not only understand, but also be able to implement health promotion concepts in accordance with the latest accreditation standards.