PMID: 9191628Jun 1, 1997Paper

Do low-risk prenatal patients really need a screening glucose challenge test?

The Journal of Family Practice
M R HeltonM King

Abstract

It is common practice to routinely screen pregnant women for gestational diabetes. The screening technique typically used is the 1-hour 50-g oral glucose tolerance test (OGTT), with a subsequent 3-hour 100-g OGTT for women whose 1-hour test was positive. This process can be both time-consuming and inconvenient for patients. Additionally, its sensitivity and specificity are estimated to be 70% and 87% respectively, and data about the effect of screening and treatment on low-risk pregnancy outcomes are limited. The objective of this study was to reassess the value of routine screening of all pregnant patients with a 1-hour glucose challenge test. At a university-based family practice center with a predominantly low-risk population, a retrospective analysis was performed of all patients (n = 595) who received prenatal care and gave birth between January 1988 and December 1993. Among women in whom gestational diabetes was diagnosed on the basis of glucose tolerance testing, we identified those with risk factors for the disease, and examined whether a selective screening program based on risk factors alone would have resulted in correct diagnoses of gestational diabetes. Of the 595 patients, 544 (91.4%) were screened with a 1-hour 5...Continue Reading

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