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Published on: November 20, 2015
Fetal syphilis: clinical and laboratory characteristics
L M Hollier1, T W Harstad, P J Sanchez
1Departments of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, Texas, USA. lisa.m.hollier@uth.tmc.edu
Obstetrics and Gynecology
|June 1, 2001
Summary
Fetal syphilis presents with findings similar to neonatal syphilis, including abnormal liver enzymes and hematologic issues. Early detection and treatment are crucial, as severe cases increase the risk of treatment failure.
Area of Science:
- Obstetrics and Gynecology
- Infectious Diseases
- Fetal Medicine
Background:
- Syphilis during pregnancy poses significant risks to fetal development.
- Understanding the pathophysiology of fetal syphilis is critical for timely diagnosis and management.
Purpose of the Study:
- To investigate the pathophysiology of fetal syphilis.
- To correlate hematologic, immunologic, and sonographic findings in fetuses with syphilis.
- To assess the impact of maternal treatment on fetal and neonatal outcomes.
Main Methods:
- Prospective study of 24 pregnant women with untreated syphilis.
- Inclusion of sonography, amniocentesis, and percutaneous umbilical blood sampling.
- Laboratory analysis including Darkfield microscopy, PCR for Treponema pallidum, and Western blot for fetal IgM.
Main Results:
- 66% of fetuses showed signs of congenital syphilis or T. pallidum detection.
- Common findings included hepatomegaly (66%), abnormal liver transaminases (88%), anemia (26%), and thrombocytopenia (35%).
- Maternal treatment success rate was 83%, with increased treatment failure risk in cases with hepatomegaly and ascites.
Conclusions:
- Fetal syphilis exhibits similar clinical and laboratory findings to neonatal syphilis.
- Transaminase elevation may be an early indicator, followed by hematologic abnormalities and hydrops.
- Disease severity correlates with the risk of treatment failure, emphasizing the need for prompt intervention.
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