Q. What are the common causes of Bradycardia?

Doctor Answer is medically reviewed by SecondMedic medical review team.

Answered by Secondmedic Expert

Bradycardia, which refers to a slower-than-normal heartbeat, can be caused by various factors. One primary cause is age-related wear and tear on the heart's natural pacemaker, the sinoatrial (SA) node, leading to a decreased heart rate.

Other common causes include certain medications such as beta-blockers, calcium channel blockers, or anti-arrhythmic drugs, which can suppress the heart rate. Underlying medical conditions like hypothyroidism, where the thyroid gland doesn't produce enough hormones, or electrolyte imbalances (like low potassium levels) can also contribute to Bradycardia.

Heart diseases such as coronary artery disease, myocarditis (inflammation of the heart muscle), or heart block (a disruption in the electrical signals between the atria and ventricles) are potential causes. Athletes or individuals with high fitness levels might experience Bradycardia due to their well-conditioned hearts, a condition known as athlete's heart.

Moreover, factors like infections, certain genetic factors, obstructive sleep apnea, and complications post-heart surgery can also lead to Bradycardia.

Identifying the cause of Bradycardia is crucial for appropriate treatment. Diagnosis often involves a thorough medical history review, physical examination, and tests like electrocardiogram (ECG or EKG), Holter monitor, echocardiogram, or blood tests to evaluate thyroid function and electrolyte levels.

Treatment depends on the underlying cause. In some cases, addressing the root cause, such as adjusting medications or treating thyroid issues, can resolve Bradycardia. However, if symptoms are severe or if Bradycardia poses a risk, treatments like pacemaker implantation may be necessary to regulate the heartbeat.

Always consult a healthcare professional for a proper diagnosis and personalized treatment plan if you suspect Bradycardia or experience symptoms like dizziness, fatigue, shortness of breath, or fainting. Regular check-ups and lifestyle modifications can also help manage Bradycardia and its underlying causes effectively.
 

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