Potential Impact of Revising the Diagnostic Criteria for Gestational Diabetes on Maternal Pregnancy and Infant Perinatal Outcomes.

The revised diagnostic criteria for gestational diabetes (GDM) in New Zealand include lowering the fasting glucose from the current ≥ 5.5 to ≥ 5.3 mmol/L and replacing the current 2-h post-load glucose (≥ 9.0 mmol/L) with a 1-h glucose (≥ 10.6 mmol/L). We assessed the effects of these changes on the demographics of those diagnosed and their perinatal outcomes.