Abstract:To compare the blood glucose variability of different subcutaneous insulin injection programs after intensive therapy using a insulin pump in patients with type 2 diabetes (T2DM). Methods A total of 360 T2DM patients were treated with insulin pump and then converted to use insulin aspart with insulin detemir (Asp+Det group), insulin aspart 30 (Asp30 group) and Novolin 50R (Nov50R group), each group had 120 cases. The general data and biochemical indexes were recorded at discharge. Blood glucose and other related indexes were tested after 3 months of treatment. The third 24-h mean blood glucose (MBG),the largest amplitude of glycemic excursion (LAGE), the mean amplitude of glycemic excursions (MAGE) within one day, coefficient variation (CV) and CV-FPG were monitored with continuous glucose monitoring system. Results There was no significant difference in BMI, 2-h PG or HbA1c among the three groups (p >0.05). The FPG, the total insulin dosage and the rate of hypoglycemic events in the Nov50R group were higher than those in the Asp+Det group and the Asp30 group (p < 0.05), but there was no significant difference between the Asp+Det and Asp30 groups (p > 0.05). There was no statistical significance in 24-hMBG among the three groups (p > 0.05). The LAGE, MAGE, CV and CV-FPG in the Nov50R and Asp30 groups were higher than those in the Asp+Det group (p < 0.05); and the LAGE, CV and CV-FPG in the Nov50R group were higher than those in the Asp30 group (p < 0.05). Conclusions The blood glucose variability of insulin Asp with insulin Det after intensive therapy using a insulin pump in patients with type 2 diabetes is lower than that of only Asp30 or Nov50R, and the insulin dosage and the rate of hypoglycemic events are lower.