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Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus MRSA
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Risk Factors for Methicillin-Resistant Staphylococcus aureus (MRSA) Colonization Among Patients Admitted to

Bing Wang1, Kathryn N Suh2, Katherine A Muldoon3

  • 1Department of Pathology and Laboratory Medicine, The Ottawa Hospital and University of Ottawa, Ottawa, ON.

Journal of Obstetrics and Gynaecology Canada : JOGC = Journal D'Obstetrique Et Gynecologie Du Canada : JOGC
|December 18, 2017
PubMed
Summary

Methicillin-resistant Staphylococcus aureus (MRSA) is uncommon in obstetrical patients, affecting 0.34%. Previous MRSA infection and multiparity are key risk factors for colonization.

Keywords:
MRSAobstetrics and gynaecologypregnancystaphylococcal infections

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Area of Science:

  • Obstetrics and Gynecology
  • Infectious Diseases
  • Public Health

Background:

  • Methicillin-resistant Staphylococcus aureus (MRSA) poses risks for maternal and infant health during childbirth.
  • Limited data exists on MRSA risk factors in obstetrical patients.

Purpose of the Study:

  • To determine the prevalence of MRSA colonization in obstetrical patients.
  • To identify risk factors associated with MRSA colonization in this population.

Main Methods:

  • A nested case-control study involving universal MRSA screening of obstetrical patients.
  • Statistical analysis including chi-square tests, Wilcoxon rank-sum tests, and conditional logistic regression.
  • Microbiologic techniques and pulsed-field gel electrophoresis for isolate characterization.

Main Results:

  • A low prevalence of MRSA colonization (0.34%) was observed among 11,478 obstetrical patients.
  • Previous MRSA infection was identified as a significant risk factor.
  • Multiparity (higher number of previous births) was also significantly associated with MRSA colonization.

Conclusions:

  • The prevalence of MRSA in obstetrical patients is low.
  • Previous MRSA infection and multiparity are identified risk factors for colonization.
  • Implementing contact precautions for patients with a history of MRSA is recommended upon hospital admission.