Background: Heart diseases are the most common diseases worldwide which cause significant morbidity and mortality. Bradycardia comes under the category of heart diseases and is more common in the elderly. Bradycardia is defined as heart rate of less than 60 beats per minute (bpm). There is a wide range of causes of bradycardia and the road to diagnosis includes extensive investigations.
Case Presentation: Here we present the case of a 71-year-old male who presented with a history of dizzy spells, easy fatigueability, syncopal attacks, and memory impairment for 3 months prior to admission. On investigation, his complete blood counts, liver function tests, renal function tests, serum electrolytes, and urine routine examination were normal. His thyroid function tests were also normal. Electrocardiogram showed sinus bradycardia with pauses. Echocardiography was also normal. Holter monitoring showed multiple sinus pauses of 3.15 seconds average.
Conclusion: We made a diagnosis of cardiogenic dementia due to sinus node dysfunction. The patient underwent permanent pacemaker implantation therapy and his symptoms improved. Our case highlights the importance of early diagnosis of the culprit disease and early intervention to prevent further complications.
Key words: Dementia, bradycardia, pacemaker
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