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Urinary Bacterial Profile and Antibiotic Susceptibility in Pregnant Adolescents and Pregnant Low Obstetric Risk Adult
Henrique Diorio de Souza1,2, Eliane Azeka Hase3, Marco Aurelio Knippel Galletta1
1Disciplina de Obstetrícia, Departamento de Obstetrícia e Ginecologia, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, Brazil.
Insights
Pregnant adolescents have higher rates of bacteriuria (urinary tract infections) compared to adult women. Escherichia coli was the most common bacteria found in both groups, highlighting the need for targeted screening in adolescent pregnancies.
Area of Science:
- Obstetrics and Gynecology
- Infectious Diseases
- Urology
Background:
- Significant bacteriuria is linked to adverse clinical and obstetric outcomes.
- Existing research on urinary pathogens in pregnant women shows varied results and often excludes adolescents.
- Data on pregnant adolescents is scarce, despite potential increased risks.
Purpose of the Study:
- To compare the prevalence and characteristics of bacteriuria in pregnant adolescents versus adult women.
- To identify risk factors and common pathogens associated with urinary tract infections in these populations.
- To analyze urine sediment and antibiogram results for differences between adolescents and adults.
Main Methods:
- Observational retrospective study conducted in a tertiary hospital.
- Involved 388 pregnant adolescents and 2547 pregnant adults.
- Compared urine sediment, urine culture, and antibiogram results from January 2010 to January 2016.
Main Results:
- Bacteriuria prevalence was higher in adolescents (17.01%) than adults (10.13%).
- Adolescence was identified as a risk factor for bacteriuria (OR=1.82).
- Escherichia coli was the most common pathogen in both groups; adolescents showed higher urinary leukocyte counts.
Conclusions:
- Pregnant adolescents exhibit higher rates of bacteriuria and abnormal urine sediments.
- Escherichia coli and Streptococcus agalactiae were the primary causative agents.
- Findings underscore the importance of screening for urinary tract infections in pregnant adolescents.
Introduction:
Significant bacteriuria is associated with clinical and obstetric complications. The existing studies on the profile of urinary pathogens in pregnant women have widely divergent results and they hardly include data on pregnant adolescents.
Methods:
This observational retrospective study was conducted in a tertiary hospital in the city of São Paulo with 388 pregnant adolescents and 2547 pregnant low-risk obstetric care adults who began prenatal care between January 2010 and January 2016. They were compared in terms of urine sediment, urine culture, and antibiogram results.
Results:
The prevalence of bacteriuria was 17.01% (66/388) among adolescents and 10.13% (258/2547) among adults. Adolescence was a risk factor for bacteriuria in pregnancy (OR=1.82, CI95%=1.35-2.44, p=0.08). The most frequently isolated pathogen in urine culture was Escherichia coli, both in adolescents (49%) and in adults (42.18%). In positive urine cultures, urinary leukocytes were present in greater numbers in adolescents than in adults (p<0.001). Resistance to quinolones in general was more frequent among adults (OR=5.86, CI95%=0.78-44.20, p<0.001), but the tendency was not statistically significant.
Conclusion:
Escherichia coli and the less frequent Streptococcus agalactiae were the etiologic agents most often found in the urine cultures both of adolescents and adults. Higher rates of bacteriuria and of abnormal urine sediments prevailed among adolescents.
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