fetal bradyarrhythmia

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

Pathology

A fetal bradyarrhythmia can fall into several types which include

• fetal partial atrioventricular block (PAVB)
• fetal complete atrioventricular block (CAVB): considered the commonest type
• blocked premature atrial contractions: 

Associations

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

Treatment and prognosis

Complications

The development of hydrops fetalis is a serious complication.

Siehe auch:

• Herzfehler
• Hydrops fetalis
• fetal heart rate
• fetal complete atrioventricular block (CAVB)
• fetal bradycardia
• blocked premature atrial contractions