Prasetya, I., Afifah, Y., Anjarwani, S., Juzar, D.A., Bagaswoto, H.P., Muzakkir, A.F., Habib, F., Astiawati, T., Wirawan, H., Ilhami, Y.R., Djafar, D.U., Sungkar, S., Danny, S.S. and Rohman, M.S. 2025. Hypocapnia and its relationship with in-hospital mortality in acute heart failure patients: Insights from the Indonesian multicenter ICCU registry. Narra J. 5, 1 (Jan. 2025), e1638. DOI:https://doi.org/10.52225/narra.v5i1.1638.