Journal List > Korean J Perinatol > v.24(3) > 1013679

Yun, Han, Lee, Jung, and Kim: Comparison of Obstetric and Neonatal Outcomes According to Oral Glucose Challenge Test in Korean Pregnant Women

Abstract

Purpose :

The purpose of the study was to compare obstetric and perinatal outcomes according to glucose challenge test (GCT) in a single institution.

Methods :

One thousand six women, who were underwent antepartum gestational diabetes mellitus (GDM) screening by a GCT in mid-pregnancy and delivered at National Health Service between January 1, 2007 and July 31, 2012, were included in the study. The medical records of patients were analyzed retrospectively. The Subjects were categorized into three groups according to the results of 50 g oral GTC and 100 g oral GTC; normal glucose tolerance (NGT, n=826), less than 140 mg/dL; gestational impaired glucose tolerance (GIGT, n=128), more than 140 mg/dL but non-GDM; gestational diabetes mellitus (GDM, n=52). Pre-existed maternal DM or hypertension and twin pregnancy were excluded. Obstetric and perinatal outcomes were compared among the three groups.

Result :

Maternal age, parity, and pre-pregnancy body mass index were higher in the GDM. The preterm delivery and gestational hypertension increased across the groups from NGT to GIGT to GDM (13.9% vs. 18.8% vs. 25.0%, P<0.01, and 1.9% vs.5.5% vs. 13.5%, P<0.01, respectively). Large for gestational age (LGA) and Neonatal Intensive Care Unit admission rate were higher in order in NGT, GIGT, and GDM (6.2% vs. 15.6% vs. 15.4%, P<0.01, and 12.3% vs. 24.2% vs. 38.5%, P<0.01), but other complications requiring intensive care were not different among the groups, including meconium aspiration syndrome and birth asphyxia.

Conclusion :

GDM was a risk factor of cesarean section, preterm delivery, and gestational hypertension. In addition, GIGT was positively correlated with gestational hypertension, preterm labor, cesarean section rate, and LGA. This study suggests that there is a need to develop a guideline for Korean pregnant women who were diagnosed with GIGT.

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Table 1.
Subject Characteristics of Pregnant Women According to OGTT
  NGT (n= 826) 140 ≤ P-value
GIGT (n=128) GDM (n=52)
Age (yrs) 32.2±4.5 32.9±4.1∗ 34.1±4.2∗ <0.01
Parity 0.7±0.8 0.8±0.8∗ 1.1±0.8∗ <0.01
Pre-pregnant BMI(kg/m2) 21.5±3.1 21.7±3.4 23.6±4.8∗ <0.01
Gestational Age (Weeks) 38.0±2.2 37.5±4.0∗ 37.2±1.6∗ <0.01
Weight gain(kg) 13.4±4.7 13.1±4.8 12.0±7.1 0.1
50 g OGTT 109.9±15.8 152.8±11.9∗ 165.8±21.2∗ <0.01
Overall C/S rate 359 (43.5%) 59 (46.1%) 36 (69.2%)∗ <0.01
Primigravida C/S rate 38.1% (139/365) 44.2% (23/52) 80.0%∗ (12/15) <0.01
Multiparity 460 (55.7%) 76 (59.4%) 37 (71.2%)∗ 0.02
HbA1c   5.3±0.3 5.7±0.5 <0.01
Preterm delivery <34 weeks 21 (2.5%) 7 (5.5%) 1 (1.9%) 0.411
Preterm delivery <37 weeks 115 (13.9%) 24 (18.8%)∗ 13 (25.0%)∗ 0.01
Hypertensive disorders 16 (1.9%) 7 (5.5%)∗ 7 (13.5%)∗ <0.01
BMI > 25(kg/m2) 97 (11.7%) 19 (14.8%)∗ 15 (28.8%)∗ <0.01

Data are presented as n (%) or mean±SD. Abbreviations: OGTT, oral glucose tolerance test; NGT, normal glucose tolerance; GIGT, gestational impaired gluco tolerance; GDM, gestational diabetes mellitus; BMI, body mass index; C/S, cesarean section. ∗P< 0.05 vs. NGT,

P< 0.05 vs. GIGT.

Table 2.
Neonatal Outcomes According to the Groups
  NGT (n=826) 140 ≤ P-value
GIGT (n=128) GDM (n=52)
Baby weight (g) 3,096±468 3,069±566 3,036.6±492 0.5
Apgar score        
  1 minute 6.9±1.0 6.8±1.0 6.7±0.9 0.17
  5 minute 8.0±0.9 7.9±8.3 8.0±0.7 0.84
LGA 51 (6.2%) 20 (15.6%)∗ 8 (15.4%)∗ <0.01
SGA 85 (10.3%) 16 (12.5%) 6 (5.2%) 0.52
NICU admission 102 (12.3%) 31 (24.2%) 20 (38.5%)∗ <0.01

Data are presented as n (%) or mean±SD. Abbreviations: NGT, normal glucose tolerance; GIGT, gestational impaired glucose tolerance; GDM, gestational diabetes mellitus; LGA, large for gestational age; SGA, small for gestational age; NICU, neonatal intensive care unit. ∗P<0.05 vs. NGT,

P<0.05 vs. GIGT.

Table 3.
Characteristics of Neonatal Outcomes (2)
  NGT (n=826) 140 ≤ P-value
GIGT (n=128) GDM (n=52)
Meconium aspiration 61 (7.4%) 5 (3.9%) 3 (5.8%) 0.24
Intubation 29 (3.5%) 6 (4.7%) 2 (3.9%) 0.62
Skull fracture/brain damage 10 (1.2%) 2 (1.6%) 0 0.67
Clavicle fracture 4 (0.5%) 0 1 (1.9%) 0.47
Birth asphyxia 12 (1.5%) 1 (0.8%) 1 (1.9%) 0.90

Data are presented as n (%). Abbreviations: NGT, normal glucose tolerance; GIGT, gestational impaired glucose tolerance; GDM, gestational diabetes mellitus.

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