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Antenatal classification of hydrops fetalis
J Santolaya1, D Alley, R Jaffe
1Division of Maternal-Fetal Medicine, University of Illinois, Chicago.
Obstetrics and Gynecology
|February 1, 1992
Summary
Fetal hydrops, a serious condition, affects approximately 1 in 165 pregnancies. Most cases are nonimmune hydrops, often linked to congenital anomalies or chromosomal issues, necessitating specialized care.
Area of Science:
- Perinatology
- Medical Imaging
- Genetics
Background:
- Fetal hydrops is a significant concern in prenatal diagnosis.
- Understanding its incidence and causes is crucial for management.
Purpose of the Study:
- To determine the incidence of fetal hydrops.
- To identify common causes and associated anomalies.
- To assess the rate of chromosomal abnormalities in nonimmune hydrops.
Main Methods:
- Retrospective analysis of ultrasound examinations from 1985-1990.
- Categorization of hydrops fetalis into immune and nonimmune types.
- Review of antenatal chromosomal studies for nonimmune hydrops cases.
Main Results:
- Ultrasonographic incidence of fetal hydrops was 1 in 165 pregnancies.
- Nonimmune hydrops (66 cases) predominated over immune hydrops (10 cases).
- Common nonimmune causes included cystic hygroma, heart defects, and other congenital anomalies.
- Chromosomal abnormalities were found in 34% of nonimmune hydrops cases with available studies.
- 17% of cases were idiopathic.
Conclusions:
- Fetal hydrops occurs with notable frequency in referral centers.
- Nonimmune hydrops is prevalent, detectable via early second-trimester ultrasound, and can affect low-risk populations.
- The high incidence of chromosomal abnormalities underscores the need for specialized high-risk center evaluation and management.