This prospective cohort registry study protocol comprised all consecutive primary medical ICCU admissions across one speciality hospital and nine general hospitals in Indonesia. The participating hospitals include the specialized National Cardiovascular Center Harapan Kita in Jakarta and nine general hospitals: Dr. Sardjito General Hospital in Yogyakarta, Dr. Wahidin Sudirohusodo General Hospital in Makassar, H. Adam Malik General Hospital in Medan, Dr. Saiful Anwar General Hospital in Malang, Dr. M. Djamil General Hospital in Padang, Dr. Iskak General Hospital in Tulungagung, Prof. Ngoerah General Hospital in Denpasar, Prof. Dr. R. D. Kandou General Hospital Manado, and Dr. Kariadi General Hospital Semarang. Each participating hospital will contribute data for all consecutive medical ICCU admissions for a period of 2 years, from 2021 to 2023. The participating hospitals were carefully selected to represent all regions of Indonesia.
