Bradycardia (Slow Heart Rate)

Dr. Nabi Darya Vali (AIIMS)MBBS

December 28, 2018

December 23, 2022

Bradycardia
Bradycardia

What is bradycardia?

Bradycardia or a slow heart rate is a condition when the heart of a person beats less than 60 times per minute. In the case of a healthy adult, the heart rate should be between the range of 60-100. A slow heart rate is generally seen in athletes and older people. Some young and healthy individuals may also experience bradycardia, which is normal until they start experiencing other symptoms.

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What are its main associated signs and symptoms?

Commonly seen signs and symptoms associated with bradycardia are:

Sometimes you may not experience any symptoms at all.

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What are the main causes?

There are two causes for the developing bradycardia. They are:

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How is it diagnosed and treated?

Your doctor will take a detailed history of your medical conditions and medicines that you are taking to find the cause and conduct a physical examination in those who are suspected to have a slow heart rate. To confirm bradycardia, your doctor will carry out a specialised test called electrocardiogram (ECG), which detects any abnormalities in the heart rhythm. Other tests may also be conducted, e.g., blood test (to detect hypothyroidism or electrolyte imbalance), sleep apnoea test, electrophysiology test (to know the exact cause of irregular heartbeat) and a stress test (to find the response of heart in work or stress).

Bradycardia could be identified during routine check-up even if you did not experience any symptoms previously.

Treatment is usually not given to those without any associated symptoms. Symptoms of bradycardia vary depending upon the cause. If a slow heart rate is due to a certain drug, either the dose is reduced or completely stopped. In the case of a sinus node dysfunction, a pacemaker is used to normalise the heart rate.

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References

  1. American Heart Association, American Stroke Association [internet]: Texas, USA AHA: Management of Symptomatic Bradycardia and Tachycardia
  2. American Heart Association, American Stroke Association [internet]: Texas, USA AHA: Exercise Stress Test
  3. John Wiley and Sons. [Internet]. Wiley Blackwell.United States; Bradycardia.
  4. Fred M. Kusumoto, Mark H. Schoenfeld. [Internet]. Journal of the American College of Cardiology November 2018 Bradycardia Guideline Hub.
  5. Hafeez Y, Grossman SA. Sinus Bradycardia. [Updated 2019 May 14]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2019 Jan-.

Medicines for Bradycardia (Slow Heart Rate)

Medicines listed below are available for Bradycardia (Slow Heart Rate). Please note that you should not take any medicines without doctor consultation. Taking any medicine without doctor's consultation can cause serious problems.