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Fetal bradyarrhythmia: diagnosis and outcome
J W Wladimiroff1, P A Stewart, H M Tonge
1Department of Obstetrics and Gynaecology, Erasmus University Rotterdam, The Netherlands.
Prenatal Diagnosis
|January 1, 1988
Summary
Fetal bradyarrhythmia, often linked to cardiac defects and maternal conditions, carries a significant mortality risk. Early recognition of associated pathologies is crucial for improving fetal prognosis.
Area of Science:
- Perinatology
- Fetal Cardiology
- Maternal-Fetal Medicine
Background:
- Fetal bradyarrhythmia, defined as a heart rate below 100 beats per minute, is a critical condition requiring prompt evaluation.
- The spectrum of fetal bradyarrhythmia includes atrioventricular block, sinus bradycardia, and irregular bradycardia.
Purpose of the Study:
- To investigate the causes, associated pathologies, and outcomes of fetal bradyarrhythmia diagnosed via ultrasound.
- To determine the prognostic factors influencing survival in fetuses with bradyarrhythmia.
Main Methods:
- Retrospective analysis of 17 cases of fetal bradyarrhythmia diagnosed prenatally.
- Evaluation of pregnancy duration, bradyarrhythmia type, maternal collagen disease, cardiac structural defects, karyotype, and cardiac compromise.
Main Results:
- Atrioventricular block was the most common diagnosis (n=12).
- Significant associations were found with maternal collagen disease (29%) and cardiac structural defects (59%).
- Overall mortality was high at 41%, with abnormal karyotypes (17%) and cardiac compromise (23%) identified as key concerns.
Conclusions:
- The prognosis of fetal bradyarrhythmia is strongly influenced by the specific type of arrhythmia and the presence of associated conditions.
- Identifying cardiac structural defects, abnormal karyotypes, and the degree of cardiac compromise is essential for accurate prognostication and management.