Effect of the new diagnostic criteria for gestational diabetes mellitus among Japanese women

Background　 The new diagnostic criteria for gestational diabetes mellitus (GDM), proposed by the International Association of Diabetes and Pregnancy Study Groups in 2010, were recently accepted in Japan. Therefore, the frequency of GDM is four times higher than previously recorded. This means that GDM has become a more clinically important disease. This study aimed to assess how the number of patients with GDM as well as its complications have changed after adoption of the new criteria. Methods　 A total of 3,610 pregnant women in the Japan Assessment of GDM Screening Trial and Okayama University Hospital were included. We analyzed the prevalence of GDM and its complications using the old and new criteria. Results　 The prevalence of perinatal outcomes was increased by adopting the new criteria. There were many important perinatal complications in the additional new GDM criteria; therefore, patients with mild GDM, such as one-point disorder patients, should have careful interventions. Admission to the neonatal intensive care unit was significantly increased (p = 0.01) according to the new GDM criteria because the old criteria were stricter than the new ones. GDM patients with obesity (BMI ≥ 25 kg/m2) had a high frequency of perinatal complications that could require active intervention and strict follow-up. Conclusions　 Because the new GDM criteria greatly affect perinatal complications, intervention for GDM starting at an early stage and strict follow-up (especially GDM with obesity) are important for reducing complications as well as the incidence of diabetes and metabolic syndrome in the mother and child

Isolated gestational proteinuria preceding the diagnosis of preeclampsia : an observational study

Introduction. Some pregnant women develop significant proteinuria in the absence of hypertension. However, clinical significance of isolated gestational proteinuria (IGP) is not well understood. This study aimed to determine the prevalence of IGP in singleton pregnancies and the proportion of women with IGP who subsequently developed preeclampsia (IGP-PE) among all PE cases. Material and methods. This was an observational study of 6819 women with singleton pregnancies at 12 centers, including 938 women with at least once determination of protein-to-creatinine ratio (P/Cr). Significant proteinuria in pregnancy (SPIP) was defined as P/Cr (mg/mg) level >0.27. IGP was defined as SPIP in the absence of hypertension. Gestational hypertension (GH) preceding preeclampsia (GH-PE) was defined as preeclampsia (PE) in which GH preceded SPIP. Simultaneous PE (S-PE) was defined as PE in which both SPIP and hypertension occurred simultaneously. Results. IGP and PE were diagnosed in 130 (1.9%) and 158 (2.3%) of 6819 women, respectively. Of 130 women with IGP, 32 (25%) progressed to PE and accounted for 20% of all women with PE. Hence, women with IGP had a relative risk of 13.1 (95% CI; 9.2-18.5) for developing PE compared with those without IGP [25% (32/130) vs. 1.9% (126/6689)]. At diagnosis of SPIP, P/Cr levels already exceeded 1.0 more often in women with S-PE than in those with IGP-PE [67% (33/49) vs. 44% (14/32), respectively, p = 0.031]. Conclusions. IGP is a risk factor for PE, and IGP-PE accounts for a considerable proportion (20%) of all PE

Effect of the new diagnostic criteria for gestational diabetes mellitus among Japanese women

Background　 The new diagnostic criteria for gestational diabetes mellitus (GDM), proposed by the International Association of Diabetes and Pregnancy Study Groups in 2010, were recently accepted in Japan. Therefore, the frequency of GDM is four times higher than previously recorded. This means that GDM has become a more clinically important disease. This study aimed to assess how the number of patients with GDM as well as its complications have changed after adoption of the new criteria. Methods　 A total of 3,610 pregnant women in the Japan Assessment of GDM Screening Trial and Okayama University Hospital were included. We analyzed the prevalence of GDM and its complications using the old and new criteria. Results　 The prevalence of perinatal outcomes was increased by adopting the new criteria. There were many important perinatal complications in the additional new GDM criteria; therefore, patients with mild GDM, such as one-point disorder patients, should have careful interventions. Admission to the neonatal intensive care unit was significantly increased (p = 0.01) according to the new GDM criteria because the old criteria were stricter than the new ones. GDM patients with obesity (BMI ≥ 25 kg/m2) had a high frequency of perinatal complications that could require active intervention and strict follow-up. Conclusions　 Because the new GDM criteria greatly affect perinatal complications, intervention for GDM starting at an early stage and strict follow-up (especially GDM with obesity) are important for reducing complications as well as the incidence of diabetes and metabolic syndrome in the mother and child

Urinary protein-to-creatinine ratio in pregnant women after dipstick testing : prospective observational study

Background: The dipstick test is widely used as a primary screening test for detection of significant proteinuria in pregnancy (SPIP). However, it often shows a false positive test result. This study was performed to determine which pregnant women should be recommended to undergo determination of urinary protein-to-creatinine ratio (mg/mg, P/Cr test) after dipstick test for confirmation of SPIP. Methods: This was a multicenter, prospective, and observational study of 2212 urine specimens from 1033 pregnant women who underwent simultaneous dipstick and P/Cr tests in the same spot urine samples at least once. SPIP was defined as P/Cr > 0.27. Preeclampsia was diagnosed in women with both hypertension and SPIP. Results: Preeclampsia, hypertension alone, and SPIP alone developed in 202 (20 %), 73 (7.1 %), and 120 (12 %) women, respectively. Creatinine concentration [Cr] varied greatly, ranging from 8.1 to 831 mg/dL in the 2212 urine samples. Rate of positive dipstick test results increased with increasing [Cr], while SPIP prevalence rate was lower in urine samples with higher [Cr], yielding higher false positive rates in samples with higher [Cr]. Postpartum urine samples had significantly lower [Cr] compared to those obtained antepartum (60 [8.7-297] vs. 100 [10-401] mg/dL, respectively). At the first P/Cr test among women with similar dipstick test results, the risk of having SPIP was consistently and significantly higher for hypertensive women than for normotensive women at any dipstick test result: 18 % (14/77) vs. 3.2 % (8/251), 47 % (26/55) vs. 8.7 % (37/425), 91 % (82/90) vs. 59 % (44/75) for negative/equivocal, 1+, and >= 2+ test results, respectively. The risk of SPIP was 16 % (9/55) for normotensive women when two successive antenatal urine samples showed a dipstick test result of 1 +. Conclusions: For prediction of SPIP, the dipstick test was more likely to show a false positive result in concentrated urine samples with higher [Cr]. Hypertensive women with >= 1+ as well as normotensive women with >= 2+ on dipstick test should be advised to undergo the P/Cr test

Isolated gestational proteinuria preceding the diagnosis of preeclampsia - an observational study

Introduction. Some pregnant women develop significant proteinuria in the absence of hypertension. However, clinical significance of isolated gestational proteinuria (IGP) is not well understood. This study aimed to determine the prevalence of IGP in singleton pregnancies and the proportion of women with IGP who subsequently developed preeclampsia (IGP-PE) among all PE cases. Material and methods. This was an observational study of 6819 women with singleton pregnancies at 12 centers, including 938 women with at least once determination of protein-to-creatinine ratio (P/Cr). Significant proteinuria in pregnancy (SPIP) was defined as P/Cr (mg/mg) level >0.27. IGP was defined as SPIP in the absence of hypertension. Gestational hypertension (GH) preceding preeclampsia (GH-PE) was defined as preeclampsia (PE) in which GH preceded SPIP. Simultaneous PE (S-PE) was defined as PE in which both SPIP and hypertension occurred simultaneously. Results. IGP and PE were diagnosed in 130 (1.9%) and 158 (2.3%) of 6819 women, respectively. Of 130 women with IGP, 32 (25%) progressed to PE and accounted for 20% of all women with PE. Hence, women with IGP had a relative risk of 13.1 (95% CI; 9.2-18.5) for developing PE compared with those without IGP [25% (32/130) vs. 1.9% (126/6689)]. At diagnosis of SPIP, P/Cr levels already exceeded 1.0 more often in women with S-PE than in those with IGP-PE [67% (33/49) vs. 44% (14/32), respectively, p = 0.031]. Conclusions. IGP is a risk factor for PE, and IGP-PE accounts for a considerable proportion (20%) of all PE