Harlass F F, Duff P, Herd M
Division of Maternal Fetal Medicine, Madigan Army Medical Center, Tacoma, WA 98431-5418.
Mil Med. 1990 Feb;155(2):49-51.
The purpose of this prospective investigation was to determine whether an alteration in urine pH, either by itself or in combination with other rapid screening tests, could be used to identify asymptomatic bacteriuria in pregnant women. Clean catch urine specimen was used to evaluate 510 asymptomatic obstetric patients. Urine specimens were tested for pH, leukocyte esterase activity, and the presence of nitrites. The pH, leukocyte esterase activity, and nitrite reaction were evaluated singly and in combination to determine if these variables could be used to predict significant bacteriuria. Twenty-four (4.8%) patients had positive cultures for E. coli. The mean pH of the infected population was not significantly different from that of the uninfected population. The performance parameters of pH, singly and in combination with the leukocyte esteras and nitrite status, were poor. We concluded that the identification of urine pH is not of value in detecting asymptomatic bacteriuria.
这项前瞻性调查的目的是确定尿液pH值的改变，无论是单独使用还是与其他快速筛查试验联合使用，是否可用于识别孕妇无症状菌尿。采用清洁中段尿标本对510例无症状产科患者进行评估。对尿标本进行pH值、白细胞酯酶活性和亚硝酸盐检测。分别及联合评估pH值、白细胞酯酶活性和亚硝酸盐反应，以确定这些变量是否可用于预测显著菌尿。24例（4.8%）患者大肠杆菌培养阳性。感染人群的平均pH值与未感染人群无显著差异。pH值单独及与白细胞酯酶和亚硝酸盐状态联合使用时的性能参数较差。我们得出结论，测定尿液pH值对检测无症状菌尿没有价值。
