dromlakhani Recommend RT-CGM for T1DM with A1C above target
STEP 1 — Gather Information
Confirm adult T1DM diagnosis, obtain current A1C and individualized target A1C, assess patient willingness and ability to use RT-CGM device on a nearly daily basis, and review insurance coverage/cost.
Action: If data are complete, proceed to Step 2.
STEP 2 — Rule In / Rule Out
Is the patient an adult with T1DM and has A1C above target?
- Yes: Proceed to Step 3.
- No: Do not recommend RT-CGM; address glycemic control with other modalities and reassess at next visit.
STEP 3 — Classify or Stratify
Classify by willingness and ability to use RT-CGM nearly daily:
- Willing and able: Proceed to Step 4.
- Unwilling or unable: Identify barriers (e.g., cost, dexterity, psychosocial concerns) and consider alternatives such as intermittent CGM or intensified SMBG.
STEP 4 — Decide
If willing and able: Initiate RT-CGM with device-specific education, training, and calibration plan; schedule follow-up in 1–2 weeks to review data and adjust therapy.
If unwilling/unable: Address barriers, provide education on SMBG, and reassess willingness at subsequent visits.
Clinical Guardrails / Mimics / Pitfalls
Do not rely on RT-CGM as a sole replacement for SMBG calibration; ensure patients receive formal device training to prevent alarm fatigue and skin irritation; avoid initiating in patients unable to perform required calibrations without caregiver support; consider cost and insurance coverage prior to prescription; do not use RT-CGM in patients with hypoglycemia unawareness without structured hypoglycemia prevention strategies.
Concrete Clinical Example
A 34‑year‑old woman with T1DM has A1C 8.2% (target <7.0%). She reports willingness to wear a CGM sensor daily, has no financial barriers, and can perform fingerstick calibrations. Clinician recommends RT‑CGM initiation, arranges trainer-led education, and schedules a follow‑up visit in 2 weeks to download data and adjust insulin doses.
Source: Diabetes Technology—Continuous Subcutaneous Insulin Infusion Therapy and Continuous Glucose Monitoring in Adults: An Endocrine Society Clinical Practice Guideline, Endocrine Society, 2016, DOI:10.1210/jc.2016-2534
TODO: consider adding scripts/calc.py for the endo-rtcgm-recommend-t1dm-above-target calculator