A slower than typical heartbeat (bradycardia) can prevent the brain and other organs from getting enough oxygen, possibly causing these signs and symptoms:  Chest pain Confusion or memory problems Dizziness or lightheadedness Easily tiring during physical activity Fatigue Fainting (syncope) or near-fainting Shortness of breath 
slower typical heartbeat (bradycardia) can prevent brain organs oxygen  possibly causing signs symptoms:  chest pain confusion memory problems dizziness lightheadedness easily tiring physical activity fatigue fainting (syncope) near-fainting shortness breath 
bradycardia