Kasraeian Maryam, Asadi Nasrin, Ghaffarpasand Fariborz
Department of Obstetrics & Gynecology, Shiraz University of Medical Sciences, Shiraz, Iran.
Saudi Med J. 2009 Jul;30(7):917-20.
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.
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.
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%).
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.
确定转诊至伊朗设拉子某大学医院接受围产期护理的孕妇中无症状菌尿的发生率，并确定无症状菌尿与脓尿之间的关系。
这项横断面病例系列研究纳入了389名健康孕妇，她们于2007年5月至8月期间被转诊至伊朗设拉子哈菲兹医院产前护理单元接受常规围产期护理。按照标准微生物学技术收集并处理每个研究对象的样本。对所有受试者进行菌尿评估。
患者的平均年龄为26.3 ± 4.2岁。无症状菌尿的发生率为5.1%。在高倍视野下有≥5个脓细胞的75名（19.2%）患者中，只有12名（16%）尿培养呈阳性。最常见的分离微生物是大肠杆菌（70%），其次是金黄色葡萄球菌（20%）和B族链球菌（5%）。
我们发现我们无症状孕妇队列中的菌尿发生率在文献报道的范围内。脓尿检测结果为阴性并非孕妇不存在无症状菌尿的可靠指标。为预防无症状菌尿并发症，所有孕妇在首次产前检查时都应进行筛查。
