PMID- 32746043 OWN - NLM STAT- MEDLINE DCOM- 20210625 LR - 20210625 IS - 1558-2531 (Electronic) IS - 0018-9294 (Linking) VI - 68 IP - 2 DP - 2021 Feb TI - Using Iterative Learning for Insulin Dosage Optimization in Multiple-Daily-Injections Therapy for People With Type 1 Diabetes. PG - 482-491 LID - 10.1109/TBME.2020.3005622 [doi] AB - OBJECTIVE: In this work, we design iterative algorithms for the delivery of long-acting (basal) and rapid-acting (bolus) insulin, respectively, for people with type 1 diabetes (T1D) on multiple-daily-injections (MDIs) therapy using feedback from self-monitoring of blood glucose (SMBG) measurements. METHODS: Iterative learning control (ILC) updates basal therapy consisting of one long-acting insulin injection per day, while run-to-run (R2R) adapts meal bolus therapy via the update of the mealtime-specific insulin-to-carbohydrate ratio (CR). Updates are due weekly and are based upon sparse SMBG measurements. RESULTS: Upon termination of the 20 weeks long in-silico trial, in a scenario characterized by meal carbohydrate (CHO) normally distributed with mean mu = [50, 75, 75] grams and standard deviation sigma = [5, 7, 7] grams, our strategy produced statistically significant improvements in time in range (70--180) [mg/dl], from 66.9(33.1) % to 93.6(6.7) %, p = 0.02. CONCLUSIONS: Iterative learning shows potential to improve glycemic regulation over time by driving blood glucose closer to the recommended glycemic targets. SIGNIFICANCE: Decision support systems (DSSs) and automated therapy advisors such as the one proposed here are expected to improve glycemic outcomes reducing the burden on patients on MDI therapy. FAU - Cescon, Marzia AU - Cescon M FAU - Deshpande, Sunil AU - Deshpande S FAU - Nimri, Revital AU - Nimri R FAU - Doyle Iii, Francis J AU - Doyle Iii FJ FAU - Dassau, Eyal AU - Dassau E LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210120 PL - United States TA - IEEE Trans Biomed Eng JT - IEEE transactions on bio-medical engineering JID - 0012737 RN - 0 (Blood Glucose) RN - 0 (Hypoglycemic Agents) RN - 0 (Insulin) SB - IM MH - Blood Glucose MH - Blood Glucose Self-Monitoring MH - *Diabetes Mellitus, Type 1/drug therapy MH - Humans MH - Hypoglycemic Agents/therapeutic use MH - Insulin/therapeutic use MH - Insulin Infusion Systems EDAT- 2020/08/04 06:00 MHDA- 2021/06/29 06:00 CRDT- 2020/08/04 06:00 PHST- 2020/08/04 06:00 [pubmed] PHST- 2021/06/29 06:00 [medline] PHST- 2020/08/04 06:00 [entrez] AID - 10.1109/TBME.2020.3005622 [doi] PST - ppublish SO - IEEE Trans Biomed Eng. 2021 Feb;68(2):482-491. doi: 10.1109/TBME.2020.3005622. Epub 2021 Jan 20.