The NICE and PRECOG guidelines are based on systematic reviews of risk factors for pre-eclampsia to identify mothers at risk before 20 weeks' gestation. Cases (64) and controls (112) were classified retrospectively as screen positive or negative as recommended by the two guidelines The NICE guideline had a higher sensitivity rate of 77% (95% CI 65-87%) vs 59% (95% CI 46-71%) but a lower specificity of 54% (95% CI 44-64%) vs 81% (95% CI 73-88%) with the PRECOG guideline. Based on an incidence of pre-eclampsia of 4% the positive predictive values of PRECOG and NICE guidelines were estimated at only 11% and 7%, respectively. The most discriminatory risk factor was history of pre-eclampsia in a previous pregnancy. Neither guideline has a reasonable performance and cannot be recommended for use in clinical practice. Resources should rather be focussed on development of new strategies to identify women at risk of pre-eclampsia.
Introduction: Gestational diabetes mellitus is common disorder in pregnancy. It is associated with adverse pregnancy outcome. There is no consensus regarding the optimal approach to screening of gestational diabetes mellitus. The present study has tried toobserve the value of fasting blood glucose in screening of gestational diabetes. Objective: To determine the frequency of patients in whomfasting blood glucose and 100gm glucose tolerance show agreement for screening of gestational diabetes mellitus at 24 -28 wks. Studydesign: Comparative cross sectional study. Settings: The study was conducted at Gynecology and Obstetrics department Shaikh ZayedFederal Post Graduate Institute Lahore. Duration of study with dates: 6 months from 12Nov 2010 to 11 May 2011. Material and method: Thestudy included 135 booked patients with positive family history of diabetes mellitus. All patients underwent fasting blood glucose at 24-28 weeksof gestation, regardless of results of fasting blood glucose on next visit they underwent 100g oral glucose tolerance test (OGTT). The agreementbetween fasting blood glucose and 100g oral glucose tolerance test was calculated in frequency and percentages. Results: The mean age ofwomen in studied population was 27.15±3.70.Out of 135 patients 86.7 %( 117) showed agreement between results of fasting blood glucose and100g OGTT while 13.31 %( 18) showed no agreement between both of the tests. Conclusions: Fasting blood glucose is a good screeningoption for gestational diabetes mellitus along with positive history. It provides a simple, cheap and more practical test for screening of gestationaldiabetes mellitus. However diagnostic confirmation with 100g OGTT should be done.
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