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  • Title: Ambulatory 24-hour fast using flexible insulin therapy in patients with type 1 diabetes.
    Author: Vigeral C, Sola-Gazagnes A, Nejjar S, M'Bemba J, Boitard C, Slama G, Elgrably F, Larger E.
    Journal: Diabetes Metab; 2011 Dec; 37(6):553-9. PubMed ID: 21802332.
    Abstract:
    AIM: Prolonged fasting may be necessary in life for religious, medical and other reasons. For this reason, our study investigated the feasibility and safety of a 24-h fast conducted at home for patients with type 1 diabetes. RESEARCH DESIGN AND METHODS: Thirty-four patients with type 1 diabetes performed a 24-h complete fast at home. Thirteen patients were treated with multiple insulin injections using either glargine (n=12) or NPH (n=1) as basal insulin. The remaining patients were treated with an insulin pump. All patients received their basal insulin only, which was adjusted to 40% of their total daily dose, and were monitored by either a Gold(®) or Guardian(®) continuous glucose monitoring (CGMS) device. Capillary glucose (SMBG) was targeted at 3.9-7.8 mmol/L, with a standardized protocol for correction of hyper- and hypoglycaemia. Interstitial glucose (IG) profiles were compared with the SMBG values; the IG profiles of patients using glargine or a pump and either of the two CGMS devices were also compared. RESULTS: All of the patients completed the 24-h fast with no major incident. At the end of the fast, 80% of the IG values were on target. The route by which insulin was delivered made no difference, but there were more IG values on target in patients monitored by the Guardian(®) device. IG was below target in 104 occurrences and above-target in 34. After a mean intake of 10 g of sucrose, below-target IG was corrected within 30 min [range: 15-40]. The mean insulin dose to correct above-target episodes was 1 U. CONCLUSION: Prolonged fasting is possible at home in patients with type 1 diabetes, provided the basal dose is adjusted. The use of CGMS is not necessary, but offers useful information on the patient's IG profile during the fast.
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