Case Presentation: An 80-year-old female with a history of type 2 diabetes mellitus presented with progressively worsening ataxia and left-sided weakness for 6 months. She had no symptoms attributable to bradycardia and was not taking AV nodal blocking medications. Examination revealed mild left hemiparesis and ataxic gait, with a heart rate of 40 beats/min but was otherwise unremarkable. [...]