In a 32-year-old postpartum (day 1) woman with type 2 diabetes, weight 65 kg, normal renal function (creatinine 0.63 mg/dL, eGFR > 90 mL/min), prior insulin dependence with A1C 14% two years ago, and currently on only a sliding-scale insulin correction (insulin sensitivity factor 50) with glucose readings of 153, 257, and 197 mg/dL, should she be started on any diabetes medications at discharge?

Yes, she should be started on diabetes medications at discharge.

This 32-year-old postpartum woman with type 2 diabetes and persistent hyperglycemia (glucose readings 153-257 mg/dL) requires discharge diabetes medications, not just sliding-scale insulin alone. Her history of severe hyperglycemia (A1C 14% two years ago) and current elevated glucose readings indicate she needs a structured outpatient regimen.

Recommended Discharge Regimen

Start basal insulin at discharge as the primary therapy. Given her current insulin sensitivity factor of 50 and glucose readings, initiate long-acting basal insulin (NPH, detemir, or glargine) at approximately 50% of her pregnancy insulin requirements, or start conservatively at 0.3 units/kg (approximately 20 units daily for her 65 kg weight) 1, 2. This should be titrated every 2-3 days based on fasting glucose readings.

Key Clinical Reasoning:

• Exclusive sliding-scale insulin should be discouraged at discharge 3, 1. The guidelines are explicit that sliding-scale alone is inadequate for diabetes management and should only be used for patients whose glucose is in target range most of the time 1.

• Postpartum insulin requirements drop dramatically - typically to 34-50% of late pregnancy doses immediately after placental delivery, then gradually return to pre-pregnancy levels over 1-2 weeks 2, 4. Since she wasn't on insulin during pregnancy (despite her diabetes), you're essentially starting fresh, but her glucose readings of 153-257 mg/dL indicate clear need for pharmacotherapy.

• Her A1C of 5.6% is misleading in the immediate postpartum period. A1C can be persistently lowered by pregnancy-related factors and doesn't accurately reflect current glycemic control 4. Her actual glucose readings (257 mg/dL peak) are far more relevant.

Additional Discharge Considerations

Add metformin if not breastfeeding, or consider it even if breastfeeding after shared decision-making. Metformin is FDA pregnancy category B and has accumulating evidence of safety during breastfeeding 1. For women with prior GDM or severe T2D, metformin provides additional glucose control and may reduce diabetes progression 5.

If she plans to breastfeed, be particularly vigilant about hypoglycemia prevention, as breastfeeding increases hypoglycemia risk with erratic sleep and eating schedules 4, 6. This may require more conservative insulin dosing initially.

Critical Postpartum Follow-up

Schedule diabetes follow-up within 1-2 weeks (not waiting for the standard 6-week postpartum visit) given her glucose readings 1, 6. She needs:

• 75-g OGTT at 6-12 weeks postpartum using non-pregnant criteria to assess for persistent diabetes or prediabetes 7, 4
• Ongoing diabetes education and support
• Contraception counseling, as unplanned pregnancy with uncontrolled diabetes carries high risk of congenital malformations 4, 6

Common Pitfalls to Avoid

1. Don't discharge on sliding-scale alone - this is explicitly discouraged by guidelines and will lead to poor control 3, 1

2. Don't assume her A1C of 5.6% means she's controlled - postpartum A1C is unreliable, and her actual glucose readings tell the real story 4

3. Don't wait until the 6-week postpartum visit to address her diabetes - she needs earlier follow-up given her glucose readings 6

4. Don't forget hypoglycemia prevention - postpartum insulin sensitivity changes rapidly, especially with breastfeeding 4, 6

5. Don't overlook the fact that she had A1C 14% previously - this indicates severe, poorly controlled diabetes that will likely require ongoing intensive management 1

Specific Discharge Orders

• Basal insulin (glargine, detemir, or NPH): Start 20 units subcutaneously at bedtime
• Rapid-acting insulin (lispro or aspart): Continue correction doses with meals using her ISF of 50, targeting pre-meal glucose <130 mg/dL and 2-hour post-meal <180 mg/dL
• Metformin 500 mg twice daily with meals (if not breastfeeding, or after discussion if breastfeeding)
• Home glucose monitoring: Fasting and 2 hours after each meal
• Diabetes follow-up: Within 1-2 weeks for insulin titration
• OGTT: Schedule for 6-8 weeks postpartum

This approach addresses her immediate hyperglycemia while setting up appropriate long-term diabetes management and surveillance 1, 6.