Final answer:
Sinus Bradycardia is a medical condition where the resting heart rate is below 60 bpm, which might be caused by heart node abnormalities or external factors. Treatment includes addressing the underlying cause, and if symptomatic, may involve a pacemaker or medication changes.
Step-by-step explanation:
Definition of Sinus Bradycardia
Sinus Bradycardia is a medical condition characterized by a slower than normal heart rate (HR), with adult rates falling below 60 beats per minute (bpm) at rest. This condition may be symptomatic of an underlying pathology or a benign physiological response, such as that observed in well-trained athletes. The causes of sinus bradycardia can be directly related to the heart's sinoatrial (SA) or atrioventricular (AV) node abnormalities or might be influenced by external factors such as metabolic disorders, endocrine problems, electrolyte imbalances, and certain medications like beta blockers. Treatment strategies revolve around identifying and managing the root cause and could involve the use of a pacemaker, medication adjustments, and addressing lifestyle factors or metabolic imbalances.
Symptoms of sinus bradycardia may include dizziness, fatigue, weakness, or fainting, indicating an inadequate supply of oxygenated blood to the body tissues. However, if bradycardia is not accompanied by symptoms and the heart rate is above 50 bpm, it may not be clinically significant. Treatment options aim to improve symptoms and address any potential complications.