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Mid-trimester amniocentesis and antibiotic prophylaxis.
Dandolo Gramellini1, Stefania Fieni, Giovanna Casilla
1Department of Gynecology, Obstetrics and Neonatology, University of Parma, Parma, Italy. dandolo.gramellini@unipr.it
Prenatal Diagnosis
|July 4, 2007
Summary
Antibiotic prophylaxis does not appear to reduce the risk of spontaneous abortion following amniocentesis. This study found no significant difference in fetal loss rates between treated and untreated patients undergoing the procedure.
Area of Science:
- Obstetrics and Gynecology
- Maternal-Fetal Medicine
- Infectious Disease Prevention
Background:
- Mid-trimester amniocentesis is an invasive procedure.
- Concerns exist regarding potential fetal loss post-amniocentesis.
- Antibiotic prophylaxis is sometimes considered to mitigate risks.
Purpose of the Study:
- To evaluate the efficacy of antibiotic prophylaxis in reducing fetal loss after amniocentesis.
- To compare fetal loss rates between patients receiving antibiotics and those who did not.
- To analyze risks in relation to preexisting and procedure-related factors.
Main Methods:
- Retrospective study design.
- Comparison of fetal loss rates in treated (amoxicillin/clavulanic-acid or azithromycin) versus untreated patients.
- Evaluation of fetal loss within the 22nd week of gestation.
Main Results:
- Overall spontaneous abortion rate was 1.26% (22/1744).
- No significant difference in abortion rates between antibiotic-treated (1.3%) and untreated (1.2%) groups.
- In patients with preexisting risk factors, fetal loss was 9.2% in untreated vs. 2.3% in treated (p=0.10).
Conclusions:
- Antibiotic prophylaxis does not significantly reduce the risk of spontaneous abortion after amniocentesis.
- Observed lower fetal loss rates with amoxicillin were not statistically significant.
- Further research may be needed to clarify potential benefits in specific high-risk subgroups.
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