Dacus J, Schulz K, Averill A, Sibai B
Department of Obstetrics and Gynecology, University of Tennessee, Memphis 38163.
Am J Perinatol. 1989 Jul;6(3):334-6. doi: 10.1055/s-2007-999608.
With 2 to 4% of the obstetric population demonstrating glucose intolerance, many authorities advocate the routine screening of all pregnant women. Some have questioned the cost effectiveness of such an approach and have chosen to screen only those with high-risk factors, overlooking a large percentage of gestational diabetics. The purpose of this report was to determine if Accu-Chek glucometer values are sufficiently accurate to substitute for laboratory values in our medical complex. Capillary Accu-Chek glucose values and laboratory values were compared in 140 patients. Values ranged from a low of 43 to a high of 380. The mean +/- SD glucose values were 142 +/- 73 mg/dl and 142 +/- 80 mg/dl, respectively. These values are not significantly different. Using a cutoff of 140 mg/dl as abnormal, the sensitivity of the capillary Accu-Chek was 100% and the specificity was 95% compared with the venous method. A simple linear regression indicated that there was a strong correlation between the capillary Accu-Chek glucose values and the laboratory glucose values (r = 0.95, p less than or equal to 0.0001). The slope was not different from 1 (p = 0.3135), and the intercept was not different from 0 (p = 0.4943), illustrating that there was an equality in the values and that one value may be substituted for the other.
由于2%至4%的产科人群存在糖耐量异常，许多权威机构主张对所有孕妇进行常规筛查。一些人质疑这种方法的成本效益，选择只对有高危因素的孕妇进行筛查，从而忽略了很大一部分妊娠期糖尿病患者。本报告的目的是确定罗氏血糖仪的值是否足够准确，可在我们的医疗中心替代实验室检测值。对140名患者的毛细血管罗氏血糖值和实验室检测值进行了比较。数值范围从低至43到高至380。平均±标准差血糖值分别为142±73mg/dl和142±80mg/dl。这些值无显著差异。以140mg/dl作为异常临界值，与静脉检测法相比，毛细血管罗氏血糖仪的灵敏度为100%，特异性为95%。简单线性回归表明，毛细血管罗氏血糖值与实验室血糖值之间存在很强的相关性（r = 0.95，p≤0.0001）。斜率与1无差异（p = 0.3135），截距与0无差异（p = 0.4943），说明两者数值相等，一个值可以替代另一个值。
