Sinus bradycardia, or a slow heart rate, can be a sign of cardiovascular health in healthy young adults and endurance athletes. It can also be a sign of an underlying condition requiring medical ...

While a slow heart rate may be normal and healthy ... One of the manifestations of Lyme disease is a conduction block, causing bradycardia. Treatment for bradycardia depends on its cause, severity ...

Sinus bradycardia is frequently asymptomatic. Heart rates in the 40s and 50s can be tolerated well. When symptoms arise, they manifest as fatigue, dizziness and dyspnea on exertion (including ...

When these occur in combination, significant conduction disease is usually present, and there is a risk for higher degrees of atrioventricular block in the future causing symptomatic bradycardia ...

Propranolol generally reduces the oxygen requirement of the heart at any given level of ... chlorpromazine, cimetidine. Bradycardia with catecholamine-depleting drugs. Antagonized by NSAIDs ...

Background: Approximately 20,000 permanent pacemakers (PPMs) are implanted annually for bradycardia or atrioventricular (AV) block after cardiac surgery. Little is known about the long-term pacing ...