Sudden cardiac arrest is a condition that occurs quite frequently. This sudden cessation of heart function is caused by the loss of electrical activity in the heart, which results in the cessation of blood circulation throughout the body. Quick and proper handling of this condition can reduce the mortality rate due to cardiac arrest. Therefore, Basic Life Support (BLS) training needs to be conducted to educate the general public. The BLS training conducted for the management officers and youth of Saint Francis of Assisi Church in Tebet was carried out by providing theoretical and practical BLS lessons, as well as conducting pre-tests and post-tests to assess the participants' understanding of the material and practices provided. From the activity conducted, a total of 22 participants attended the BLS training, and there was a significant difference in the average pre-test and post-test scores. It can be concluded that the training provided was effective in increasing the participants' understanding and knowledge of BLS.

Fatty liver is a medical condition in which fat builds up in liver cells, which can develop into steatohepatitis, fibrosis, cirrhosis and liver cancer if not treated properly. Fatty liver in the elderly causes an increased risk of serious complications due to the high prevalence of metabolic risk factors such as hypertension, diabetes, hyperlipidemia and obesity which are more common in the elderly. The importance of education and understanding risk factors so that the elderly community can adopt a healthy lifestyle is the main focus of this community service activity. Through the Plan-Do-Check-Act (PDCA) method, initial assessment, education, implementation of healthy eating and exercise patterns, and evaluation of the effectiveness of the intervention are carried out. The results showed that the majority of elderly people had cholesterol levels and liver function within normal limits, although 9.7% had hypercholesterolemia and 43% had SGOT levels that were not optimal. Continuous education and support are key in preventing and managing fatty liver and dyslipidemia in the elderly, thereby improving their quality of life.