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Intensive replacement of basal insulin in patients with type 1 diabetes given rapid-acting insulin analog at mealtime: a 3-month comparison between administration of NPH insulin four times daily and glargine insulin at dinner or bedtime.

Abstract：

OBJECTIVE:To establish differences in blood glucose between different regimens of optimized basal insulin substitution in type 1 diabetic patients given lispro insulin at meals, i.e., NPH injected four times a day versus glargine insulin once daily at dinner or at bedtime. RESEARCH DESIGN AND METHODS:A total of 51 patients with type 1 diabetes on intensive therapy (NPH four times/day and lispro insulin at each meal) were randomized to three different regimens of basal insulin substitution while continuing lispro insulin at meals: continuation of NPH four times/day (n = 17), once daily glargine at dinnertime (n = 17), and once daily glargine at bedtime (n = 17) for 3 months. Blood glucose targets were fasting, preprandial, and bedtime concentrations at 6.4-7.2 mmol/l and 2 h after meals at 8.0-9.2 mmol/l. The primary end point was HbA(1c). RESULTS:Mean daily blood glucose was lower with dinnertime glargine (7.5 +/- 0.2 mmol/l) or bedtime glargine (7.4 +/- 0.2 mmol/l) versus NPH (8.3 +/- 0.2 mmol/l) (P < 0.05). A greater percentage of blood glucose values were at the target value with glargine at dinner and bedtime versus those with NPH (P < 0.05). HbA(1c) at 3 months did not change with NPH but decreased with glargine at dinnertime (from 6.8 +/- 0.2 to 6.4 +/- 0.1%) and glargine at bedtime (from 7.0 +/- 0.2 to 6.6 +/- 0.1%) (P < 0.04 vs. NPH). Total daily insulin doses were similar with the three treatments, but with glargine there was an increase in basal and a decrease in mealtime insulin requirements (P < 0.05). Frequency of mild hypoglycemia (self-assisted episodes, blood glucose < or =4.0 mmol/l) was lower with glargine (dinnertime 8.1 +/- 0.8 mmol/l, bedtime 7.7 +/- 0.9 mmol/l) than with NPH (12.2 +/- 1.3 mmol/l) (episodes/patient-month, P < 0.04). In-hospital profiles confirmed outpatient blood glucose data and indicated more steady plasma insulin concentrations at night and before meals with glargine versus NPH (P < 0.05). There were no differences between glargine given at dinnertime and at bedtime. CONCLUSIONS:Regimens of basal insulin with either NPH four times/day or glargine once/day in type 1 diabetic patients both result in good glycemic control. However, the simpler glargine regimen decreases the HbA(1c) level and frequency of hypoglycemia versus NPH. In contrast to NPH, which should be given at bedtime, insulin glargine can be administered at dinnertime without deteriorating blood glucose control.

journal_name

Diabetes Care

journal_title

Diabetes care

authors

Rossetti P,Pampanelli S,Fanelli C,Porcellati F,Costa E,Torlone E,Scionti L,Bolli GB

doi

10.2337/diacare.26.5.1490

subject

Has Abstract

pub_date

2003-05-01 00:00:00

pages

1490-6

issue

eissn

0149-5992

issn

1935-5548

journal_volume

pub_type

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Intensive replacement of basal insulin in patients with type 1 diabetes given rapid-acting insulin analog at mealtime: a 3-month comparison between administration of NPH insulin four times daily and glargine insulin at dinner or bedtime.