PMID- 20144339 OWN - NLM STAT- MEDLINE DCOM- 20100602 LR - 20211020 IS - 1932-2968 (Electronic) IS - 1932-2968 (Linking) VI - 3 IP - 4 DP - 2009 Jul 1 TI - Computing the risk of postprandial hypo- and hyperglycemia in type 1 diabetes mellitus considering intrapatient variability and other sources of uncertainty. PG - 895-902 AB - OBJECTIVE: The objective of this article was to develop a methodology to quantify the risk of suffering different grades of hypo- and hyperglycemia episodes in the postprandial state. METHODS: Interval predictions of patient postprandial glucose were performed during a 5-hour period after a meal for a set of 3315 scenarios. Uncertainty in the patient's insulin sensitivities and carbohydrate (CHO) contents of the planned meal was considered. A normalized area under the curve of the worst-case predicted glucose excursion for severe and mild hypo- and hyperglycemia glucose ranges was obtained and weighted accordingly to their importance. As a result, a comprehensive risk measure was obtained. A reference model of preprandial glucose values representing the behavior in different ranges was chosen by a xi(2) test. The relationship between the computed risk index and the probability of occurrence of events was analyzed for these reference models through 19,500 Monte Carlo simulations. RESULTS: The obtained reference models for each preprandial glucose range were 100, 160, and 220 mg/dl. A relationship between the risk index ranges <10, 10-60, 60-120, and >120 and the probability of occurrence of mild and severe postprandial hyper- and hypoglycemia can be derived. CONCLUSIONS: When intrapatient variability and uncertainty in the CHO content of the meal are considered, a safer prediction of possible hyper- and hypoglycemia episodes induced by the tested insulin therapy can be calculated. CI - Copyright 2009 Diabetes Technology Society. FAU - Garcia-Jaramillo, Maira AU - Garcia-Jaramillo M AD - Institut d'Informatica i Aplicacions, Universitat de Girona, Campus de Montilivi, Girona, Spain. magarcia@eia.udg.edu FAU - Calm, Remei AU - Calm R FAU - Bondia, Jorge AU - Bondia J FAU - Tarin, Cristina AU - Tarin C FAU - Vehi, Josep AU - Vehi J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090701 PL - United States TA - J Diabetes Sci Technol JT - Journal of diabetes science and technology JID - 101306166 RN - 0 (Blood Glucose) SB - IM MH - Blood Glucose/*metabolism MH - Chi-Square Distribution MH - Computer Simulation MH - Diabetes Mellitus, Type 1/*blood MH - Humans MH - Hyperglycemia/*blood MH - Hypoglycemia/*blood MH - Individuality MH - Monte Carlo Method MH - *Postprandial Period MH - Reference Values MH - Risk PMC - PMC2769964 EDAT- 2010/02/11 06:00 MHDA- 2010/06/03 06:00 PMCR- 2010/07/01 CRDT- 2010/02/11 06:00 PHST- 2010/02/11 06:00 [entrez] PHST- 2010/02/11 06:00 [pubmed] PHST- 2010/06/03 06:00 [medline] PHST- 2010/07/01 00:00 [pmc-release] AID - dst.3.4.0895 [pii] AID - 10.1177/193229680900300437 [doi] PST - epublish SO - J Diabetes Sci Technol. 2009 Jul 1;3(4):895-902. doi: 10.1177/193229680900300437.