MON-587 - Impact of a Transition of Care CGM Program on Glycemic Outcomes After Hospitalization

Background
Transitions of care after hospitalization are a high-risk period for patients with diabetes and poor glycemic control. To improve post-discharge management, Stony Brook University Hospital implemented a Transition of Care Management (TCM) program in which eligible patients were identified during hospitalization, provided a continuous glucose monitor (CGM) at discharge when possible, and contacted within 2 days of discharge to confirm medication access and facilitate outpatient follow-up.

Objective
To evaluate whether provision of CGM at discharge or within 1 month of discharge was associated with improved glycemic outcomes after hospitalization.

Methods
We performed a retrospective chart review of patients placed on the TCM list in 2025. Inclusion criteria were newly diagnosed diabetes or new insulin use during hospitalization. Patients already established with Stony Brook Endocrinology, those without follow-up A1c data, and pregnant patients were excluded. Patients were categorized by receipt of CGM at discharge or within 1 month versus no CGM. Admission A1c and follow-up A1c at 3-5 months, or 6-12 months if the earlier value was unavailable, were collected. Outcomes included change in A1c and proportions achieving follow-up A1c thresholds of < 9%, < 8%, and < 7%.

Results
Among 71 analyzed patients, the CGM group (n=48) had mean A1c improvement from 11.74% at admission to 7.47% at follow-up, for a mean reduction of 4.28 percentage points (95% CI 3.57 to 4.98; p< 0.001 within group). The no-CGM group (n=23) improved from 11.29% to 7.98%, for a mean reduction of 3.30 percentage points (95% CI 2.20 to 4.41; p< 0.001 within group). Baseline A1c was similar between groups (p=0.436). Follow-up A1c was lower in the CGM group, but this difference was not statistically significant (p=0.271). The between-group difference in mean A1c improvement was 0.97 percentage points favoring CGM (95% CI -0.32 to 2.26; p=0.137). At follow-up, a greater proportion of CGM patients achieved A1c < 8% compared with no-CGM patients (75.0% vs 43.5%, p=0.016). Rates of A1c < 9% (85.4% vs 82.6%, p=0.739) and < 7% (45.8% vs 26.1%, p=0.128) were not significantly different.

Conclusion
In this single-center transition-of-care program, post-discharge CGM use was associated with greater numerical A1c improvement and a higher proportion of patients achieving follow-up A1c < 8%, although the between-group difference in mean A1c reduction was not statistically significant. Larger studies are needed to confirm these findings.

*Unless otherwise noted, all abstracts presented at ENDO must not be released to the press or the public until the date and time of presentation. For oral presentations, the abstracts are embargoed until the session begins. The Endocrine Society reserves the right to lift the embargo on specific abstracts that are selected for promotion prior to or during ENDO.*