TOOBA FATIMA IRAM; HAROON ABDULLAH SHAHEED; YUSRA FATIMA ANAM; RAHUL KUMAR AGARWAL; BEGUM, Naazira. The Hidden Rhythm: A Rare Case of Isoarrhythmic Sick Sinus Syndrome Defying Chronotropic Expectations. International Journal of Medical Students, [S. l.], v. 13, p. S282, 2025. DOI: 10.5195/ijms.2025.4045. Disponível em: https://ijms.info/IJMS/article/view/4045. Acesso em: 31 dec. 2025.