DOI: https://doi.org/10.36347/sasjm.2025.v11i02.005

Pages: 117-120

Sinus node dysfunction or sick sinus syndrome refers to a group of conditions characterized by abnormal cardiac pacing, leading to various cardiac bradyarrhythmia, tachyarrhythmia or bradycardia alternating with tachycardia. These arrhythmias can cause palpitations and reduced tissue perfusion, resulting in symptoms such as fatigue, lightheadedness, and sometimes syncope. Herein we report a case of sinus node dysfunction that initially manifested as supraventricular tachycardia but was later diagnosed as tachycardia-bradycardia syndrome.