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Bradycardia

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Bradycardia is a slow heart rate; a pulse rate of less than 60 beats per minute in an adult. It may be divided up into groups much the same as tachycardia, but is more likely to be a sinus rhythm.

Possible situations include:

  • sinus bradycardia - where the abnormally slow pulse is the result of pacemaking from the sino-atrial node. This occurs in situations such as increased intracranial pressure, jaundice, sino-atrial disease, hypothyroidism and in trained athletes (1)
  • atrioventricular dissociation - this occurs in situations such as heart block and rarely, hypothermia.

Occasional ectopics are seen in ventricular bigemini.

Click here for example ECGs in cases of clinical bradycardia - with explanations of significance of ECG findings

Reference:

  • Kirby B (1993). Clinical examination of the heart. Medicine International, 21(8), 294-99.

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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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