T.H. Adjustment for 2-h glucose instead of IGT resulted in generally similar findings showing highest odds of type 2 diabetes associated with patterns 4 and 5 [odds ratio 3.19 (95% CI 1.00–10.16) and 4.14 (1.03–16.70), respectively]. RESEARCH DESIGN AND METHODS We followed 400 nondiabetic Japanese Americans for 10–11 years. Patterns 4 and 5 had an extremely high prevalence of IGT, both as isolated IGT and combined IGT plus IFG, and low prevalence of isolated IFG. The insulin response to intravenous glucose, be it as a hyperglycemic clamp or a bolus injection, is composed of first and second phases (2,3). Between 141mg/dL and 200 mg/dL (7.8 to 11.1 mmol/L) is considered impaired glucose … The glucose tolerance test, also known as the oral glucose tolerance test, measures your body's response to sugar (glucose). All participants were of 100% Japanese ancestry. Data that were not normally distributed were log transformed to achieve normal distribution before ANOVA tests were performed. Baseline characteristics of subjects by insulin concentration patterns were compared using ANOVA with Dunnett’s test for multiple comparisons for continuous variables or logistic regression analysis for categorical variables. A typical normal response shows following features. The prevalence of IFG and isolated IFG by patterns of insulin at baseline were as follows: IFG, 11.1, 17.1, 26.9, 35.5, and 25.0% for patterns 1, 2, 3, 4, and 5, respectively; and isolated IFG, 11.1, 9.8, 17.6, 4.4, and 4.2% for patterns 1, 2, 3, 4, and 5, respectively. WAT ZIJN GOEDE INDICATIES VOOR EEN ORALE GLUCOSETOLERANTIETEST? T.H. Dit kan problemen veroorzaken met sommige delen van de website. Blood samples were drawn after an overnight 10-h fast. collected and assembled data, contributed to the discussion, and reviewed and edited the manuscript. Insulin concentrations at 30, 60, and 120 min during a 2-h 75-g OGTT at baseline were used to derive the following possible patterns of insulin: pattern 1 (30-min peak, higher insulin level at 60 than at 120 min), pattern 2 (30-min peak, lower or equal level at 60 vs. 120 min), pattern 3 (60-min peak); pattern 4 (120-min peak, lower level at 30 than at 60 min), and pattern 5 (120-min peak, equal or higher level at 30 vs. 60 min). NOTE: We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. Over the 10–11 years of follow-up, there were 86 incident cases of type 2 diabetes: 43 at 5–6 years and 43 between 5–6 and 10–11 years. Second, surrogate measures were used to estimate insulin sensitivity and secretion. U moet minstens 8 tot 12 uur nuchter zijn. Your doctor will also look at your results based on your age, health, and other factors. (18) reported in 319 Mexican-American subjects of the Veterans Administration Genetic Study that the insulin secretion pattern during an OGTT rose progressively from 60 to 120 min in subjects with IGT, while it declined toward baseline after 60 min in those with normal glucose tolerance. These findings were additionally independent of age, sex, family history of diabetes, and BMI at baseline. The normal range is just a guide. Glucose builds up in your blood. A value that isn't in the normal range may still be normal for you. Water drinken mag wel, maar zeker geen koffie, cola of andere suiker- of cafeïnehoudende dranken. Diabetes was diagnosed if subjects were taking oral hypoglycemic medications or insulin, if the fasting plasma glucose level was ≥126 mg/dL, or if the 2-h value was ≥200 mg/dL. Patterns 4 and 5, characterized by a later insulin peak, diminished early insulin response, and less insulin sensitivity, were associated with higher odds of developing type 2 diabetes than the other patterns. [] OBJECTIVE To examine whether the patterns of insulin concentration during the oral glucose tolerance test (OGTT) predict type 2 diabetes. The highest value doesnot exceed the renal threshold (160-180 mg/dl). The highest peak value is reached within 1 hour. Normal Values and Interpretation of OGTT. B: Plasma glucose pattern during an OGTT for each of these insulin patterns (means [95% CI]). Hanefeld et al. are the guarantors of this work and, as such, had full access to all the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis. OGTT is mostly preferred and is explained in detail here. Abdul-Ghani et al. WANNEER IS DE GLUCOSETOLERANTIETEST AFWIJKEND? The follow-up rate in the current study was 81.3% (400 of 492) at the 10- to 11-year examination. 7 This means that in 20% of repeat tests compared to the original values, fasting values will be at least 13% higher or 13% lower and 2 hour values will be at least 33% higher or 33% lower. Characteristics of study participants at baseline by insulin concentration patterns during OGTT. After adjustment for age, sex, family history of diabetes, and BMI, these patterns were associated with the subsequent odds of developing type 2 diabetes (model 1) (Table 2).
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