Review Article

Scientific Evidence for Different Options for GDM Screening and Management: Controversies and Review of the Literature

Table 8

Management of GDM, international guidelines.

ACOG 2013 [4]CDA 2013 [10]ADA 2015 [9]FIGO 2015 [5]NICE 2015 [11]

Criteria to start therapy after diet aloneInconclusive evidenceGlycemic control not achieved after 2 weeks of nutritional therapy aloneNRNRGlycemic control not achieved after 1-2 weeks of diet and exercise

Type of initial therapyInsulin or oral medicationsInsulin or oral medicationsInsulin or glyburideGlyburide inferior to both insulin and metformin,
while metformin performs
better than insulin
Metformin

Dose and frequency of initial therapyNRNRNRNRNR

Frequency of glucose monitoring4 times
daily as fasting
and either 1 h or 2 h after each meal
4 times
daily as fasting
and either 1 h or 2 h after each meal
NR4 times
daily as fasting
and 2 h after each meal
7 times
daily as fasting, premeal, 1 h after each meal, bedtime

Target glucose values1 h ≤ 140 mg/dL,
2 h ≤ 120 mg/dL
Fasting ≤ 95 mg/dL, 1 h ≤ 140 mg/dL,
2 h ≤ 120 mg/dL
Fasting ≤ 95 mg/dL, 1 h ≤ 140 mg/dL,
2 h ≤ 120 mg/dL
Fasting ≤ 95 mg/dL, 1 h ≤ 140 mg/dL,
2 h ≤ 120 mg/dL
Fasting ≤ 95 mg/dL, 1 h ≤ 140 mg/dL,
2 h ≤ 116 mg/dL

Criteria for pharmacologic therapy dose adjustmentNRNRNRNRNR

Criteria for adding or switching pharmacologic therapyNRNRNRNRNR

Pregnancy monitoringNo consensusNRNRNRUltrasound monitoring of fetal growth and
AF volume every 4 weeks from 28 to 36 weeks

Time to deliveryWell-controlled: >39 weeks; insufficient data for others; CD if EFW > 4500 gNRNRConsider induction at 38-39 weeksDelivery no later than 40 + 6 weeks

NR: not reported.