title: Prevalence of asymptomatic bacteriuria among pregnant women in Shiraz, Iran.
abstract: OBJECTIVE
  To determine the frequency of asymptomatic bacteriuria in pregnant women referred to a University College Hospital in Shiraz, Iran for perinatal care, and also to determine the relation between asymptomatic bacteriuria and pyuria.
  
  
  METHODS
  This cross-sectional case series study included 389 healthy pregnant women who were referred to Hafez Hospital, Shiraz, Iran, antenatal care unit for regular perinatal care between May and August 2007. A specimen from each candidate was collected and processed following the standard microbiological technique. All the subjects were evaluated for bacteriuria.
  
  
  RESULTS
  The mean age of the patients was 26.3 +/= 4.2 years. The prevalence of asymptomatic bacteriuria was 5.1%. From 75 (19.2%) patients who had > or = 5 pus cells in high power field, only 12 (16%) had positive urine culture. The most common isolated microorganism was Escherichia coli (70%) followed by Staphylococcus aureus (20%) and Group B Streptococcus (5%).
  
  
  CONCLUSIONS
  We found a rate of bacteriuria in our cohort of asymptomatic pregnant subject that is well within the reported range from the literature. A negative test for pyuria is not a reliable indicator of the absence of asymptomatic bacteriuria in pregnant women. To prevent asymptomatic bacteriuria complications, all pregnant women should be screened at the first antenatal visit.
authors.affiliation: Department of Obstetrics & Gynecology, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Maryam
authors.initials: M
authors.lastname: Kasraeian
authors.forename: Nasrin
authors.initials: N
authors.lastname: Asadi
authors.forename: Fariborz
authors.initials: F
authors.lastname: Ghaffarpasand
mesh_terms: D000293:Adolescent; D000328:Adult; D001437:Bacteriuria / Q000453:epidemiology*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007492:Iran / Q000453:epidemiology; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000453:epidemiology*; D015995:Prevalence; D055815:Young Adult