Sihombing HI. Implementation Of The Semi Fowler Position To Improve The Effectiveness Of Breathing Patterns In Congestive Heart Failure (CHF) Patients At Vita Insani Pematangsiantar Hospital. COVID-19. 2024;2(01):30-36. Accessed December 21, 2025. https://jurnal.devitara.or.id/index.php/sehat/article/view/113