PMID- 35522033 OWN - NLM STAT- MEDLINE DCOM- 20220606 LR - 20220716 IS - 1935-5548 (Electronic) IS - 0149-5992 (Print) IS - 0149-5992 (Linking) VI - 45 IP - 6 DP - 2022 Jun 2 TI - Carbohydrate Tolerance Threshold for Unannounced Snacks in Children and Adolescents With Type 1 Diabetes Using an Advanced Hybrid Closed-Loop System. PG - 1486-1488 LID - 10.2337/dc21-2643 [doi] AB - OBJECTIVE: To find a carbohydrate (CHO) tolerance threshold for unannounced snacks to avoid the 2 h increase in glycemia (difference between pre- and postmeal blood glucose [DeltaBG]) >/=50 mg/dL in advanced hybrid closed-loop (a-HCL) users. RESEARCH DESIGN AND METHODS: Fourteen children and adolescents with type 1 diabetes (7 females; mean age [+/- SD] 14.5 +/- 3.6 years), users of the Medtronic MiniMed 780G, participated in the study. For 12 days, they did not perform insulin bolus before breakfasts, with defined different quantities and types of CHO, with or without fats, performing blood glucose (BG) before and 2 h after the meal. RESULTS: A cutoff of 19.8 g of total CHO was found to determine a DeltaBG of 50 mg/dL. BG never exceeded 250 mg/dL. Mean time in range was >/=70% in the 2 h following each snack. CONCLUSIONS: Unannounced snacks of up to 20 g of CHO can avoid DeltaBG >/=50 mg/dL in MiniMed 780G users, although unannounced meals of up to 30 g of CHO are safe. CI - (c) 2022 by the American Diabetes Association. FAU - Tornese, Gianluca AU - Tornese G AUID- ORCID: 0000-0002-4395-3915 AD - Institute for Maternal and Child Health - IRCCS "Burlo Garofolo," Trieste, Italy. FAU - Carletti, Claudia AU - Carletti C AD - Institute for Maternal and Child Health - IRCCS "Burlo Garofolo," Trieste, Italy. FAU - Giangreco, Manuela AU - Giangreco M AD - Institute for Maternal and Child Health - IRCCS "Burlo Garofolo," Trieste, Italy. FAU - Nistico, Daniela AU - Nistico D AD - Department of Medical Sciences, University of Trieste, Trieste, Italy. FAU - Faleschini, Elena AU - Faleschini E AD - Institute for Maternal and Child Health - IRCCS "Burlo Garofolo," Trieste, Italy. FAU - Barbi, Egidio AU - Barbi E AD - Institute for Maternal and Child Health - IRCCS "Burlo Garofolo," Trieste, Italy. AD - Department of Medical Sciences, University of Trieste, Trieste, Italy. LA - eng SI - figshare/10.2337/figshare.19491296 PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Diabetes Care JT - Diabetes care JID - 7805975 RN - 0 (Blood Glucose) RN - 0 (Hypoglycemic Agents) RN - 0 (Insulin) SB - IM MH - Adolescent MH - Blood Glucose MH - Blood Glucose Self-Monitoring MH - Child MH - *Diabetes Mellitus, Type 1/drug therapy MH - Female MH - Humans MH - Hypoglycemic Agents/therapeutic use MH - Insulin/therapeutic use MH - Insulin Infusion Systems MH - Snacks PMC - PMC9210515 EDAT- 2022/05/07 06:00 MHDA- 2022/06/07 06:00 PMCR- 2022/05/27 CRDT- 2022/05/06 08:53 PHST- 2021/12/21 00:00 [received] PHST- 2022/03/28 00:00 [accepted] PHST- 2022/05/07 06:00 [pubmed] PHST- 2022/06/07 06:00 [medline] PHST- 2022/05/06 08:53 [entrez] PHST- 2022/05/27 00:00 [pmc-release] AID - 146921 [pii] AID - 212643 [pii] AID - 10.2337/dc21-2643 [doi] PST - ppublish SO - Diabetes Care. 2022 Jun 2;45(6):1486-1488. doi: 10.2337/dc21-2643.