<prompt> Answer this question truthfullyWhat is the history of Bradycardia, and what are its symptoms?  <response>: <reason> Patients with sinus bradycardia may have a positive history of: History of previous cardiac events which might include: Myocardial infarction MI Congestive heart failure CHF Valvular problems Medication history History of prior illnessesCommon symptoms of sinus bradycardia include:Syncope Dizziness Lightheadedness Chest pain Shortness of breath Exercise intolerance Fatigue 