ABC Medical Center > Bradycardia

What is Bradycardia?

21:53 - 4 May , 2021


Bradycardia is when there is a significant decrease in heart rate, whose normal parameters at rest are 60 to 100 beats per minute, so when this abnormality occurs, the heart rate is below 60 beats per minute. 

Although in some cases bradycardia does not show any symptoms or is not serious, in others it can become a serious condition by preventing sufficient pumping of oxygenated blood to the body.

The treatment indicated in severe bradycardia is the placement of a pacemaker that controls the rhythm and rate that the heart requires to function properly. 

Origin of bradycardia:

There are several causes for the appearance of this condition, including:

  • Congenital heart defect.
  • Heart infections. 
  • Complications after heart surgery.
  • Obstructive sleep apnea.
  • Lupus or rheumatic fever.
  • Reaction to certain drugs. 
  • Cardiac degeneration due to aging.
  • Heart injuries from disease or seizures.
  • Hypothyroidism
  • Shortage of minerals such as calcium and potassium in the blood.

Signs and symptoms Bradycardia

  • Mental disorder.
  • Memory loss.
  • Loss of consciousness.
  • Dizziness and confusion.
  • Tiredness and weakness.
  • Respiratory problems.
  • Chest pain.

Potential risks:

  • Old age.
  • High levels of stress.
  • High blood pressure.
  • Smoking.
  • Alcoholism.
  • Drug addiction.

A bradycardia that causes severe symptoms can lead to the following complications:

  • Heart failure.
  • Heart attack.
  • Recurrent loss of consciousness.
  • Death.

Diagnosis and treatment Bradycardia

Once the doctor analyzes your symptoms and medical history, it will perform a physical examination and request studies such as an electrocardiogram, Holter monitor, stress tests, tilt table test, as well as blood tests, among others.

The treatment to be followed will depend on the cause of the condition and the severity of the symptoms. Medications may be prescribed to control symptoms, but if it is not enough, you will require the surgical implantation of a pacemaker.

At the Cardiovascular Center we offer you a wide range of prevention, diagnosis, timely treatment, and follow-up services to take care of you through a comprehensive and multidisciplinary care model. Come to us, we want to hear your heart.


  • Sánchez SS, Echazabal LM, Navarro BAL, et al. Caracterización de los pacientes con bradiarritmias atendidos en el servicio de Cardiología de Cienfuegos (2018-2019). Medisur. 2020;18(6):1110-1121.
  • Jacobo-Vargas TB, Orozco-Gutiérrez JJ, Rivero-Martínez JA. Bradicardia temprana en pacientes con COVID-19 y triple terapia. Cardiovasc Metab Sci . 2021;32(1):22-31. doi:10.35366/98227.
  • Medrano PY, Castillo MÁR, Lugo MAM, et al. Alteraciones electrocardiográficas en jóvenes atletas de alto rendimiento. CorSalud. 2019;11(4):296-301.
  • García-Arreola DAP, Alcántara-Morales MA. Bradicardia en el niño durante anestesia general. Rev Mex Anest. 2015;38(Suppl: 1):107-109.

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