Fetal bradyarrhythmia

Fetal bradyarrhythmia refers to an abnormally low fetal heart rate (less than 100-110 beats per minute 3,7) as well as being irregular, i.e. irregular fetal bradycardia.

Pathology

A fetal bradyarrhythmia can fall in to several types which include

Associations
  • congenital cardiac anomalies: may be present in 50-60% of cases 2, 3
  • maternal connective tissue disease 
    • anti-Ro and anti-La positive antibody pregnancies: 20-30% of cases ref

Treatment and prognosis

Complications

The development of hydrops fetalis is a serious complication.

Ultrasound - obstetric
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Article information

rID: 13881
Section: Pathology
Tag: cases
Synonyms or Alternate Spellings:
  • Fetal bradyarrhythmias

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