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CME Credit Offered
CME Credit Offered
Abstract Award
Abstract Award
Recording available 2/16-5/2
Recording available 2/16-5/2
AIUM Credit
AIUM Credit
Foundation Awardee
Foundation Awardee
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Abstract Award
Abstract Award
Foundation Awardee
Foundation Awardee

Poster Session 1

Category: Diabetes

Poster Session 1

(112) Feasibility and Outcomes of Early Postpartum 2-hour Glucose Tolerance Testing for Patients with Gestational Diabetes

Wednesday, February 11, 2026
10:30 AM - 12:00 PM  
Objective:
To evaluate the acceptance rates and outcomes of the early 2-hour 75g oral glucose tolerance test (OGTT) during delivery hospitalization.

Study Design:
This retrospective cohort analysis included all patients with gestational diabetes (GDM) who delivered between October 2024 and May 2025 after implementation of the inpatient OGTT at our institution. Exclusion criteria included diagnosis of pre-existing T1DM and T2DM or inability to tolerate the OGTT. The 75g-OGTT was performed for patients on postpartum days 2-4 prior to hospital discharge. Electronic medical records were reviewed to collect demographic information, clinical characteristics, results of the OGTT, and delivery outcomes.

Results:

Of the 1332 patients who delivered during this timeframe, 163 patients had GDM. One hundred and forty-seven patients were offered screening (90.1%), 99 of whom performed the 2h OGTT (67.3% acceptance rate). Rates of acceptance were higher in the GDMA2 group compared to GDMA1 (55.6% vs. 44.4%; p=0.036). There were no differences in age, body mass index, parity, race, insurance type, gestational age at delivery, mode of delivery, or delivery complications (shoulder dystocia, hemorrhage) or NICU admission between the 2 groups. Of the 99 patients who performed the 2h OGTT, 21 patients with GDMA2 (21.2%) and 13 patients with GDMA1 (13.1%) met criteria for impaired glucose tolerance (IGT), and 2 patients with GDMA2 (2%) and 2 patients with GDMA1 (2%) met criteria for diabetes mellitus (DM).

Conclusion:
Acceptance of the inpatient GTT is higher amongst patients with GDMA2 compared to GDMA1 yet both groups were found to have IGT and DM. All patients with GDM regardless of treatment type should be encouraged to complete this testing.