Abstract:Objective To explore the effect of insulin pump intensive treatment on inflammatory factors in serum and bronchoalveolar lavage fluid and diabetes complicated with severe pulmonary infection. Method A total of 172 patients of diabetes complicated with severe pulmonary infection from November 2015 to October 2016 in our hospital were divided randomly into control group (n = 86) and insulin pump intensive treatment group (observation group, n = 86). The patients in the observation group were treated with insulin pump of insulin aspart,and the control group was treated with insulin glargine combined with short-acting insulin aspart. Blood glucose was controlled between 7.8-10.0 mmol/L both in the control group and the observation group. Peripheral blood glucose was checked every 2-4 hours by dynamic blood glucose detector and the standard deviation (S) and the difference between the highest and the lowest blood glucose (Δ) was calculated. The level of inflammatory factors (IL-6, IL-8 and TNF-α) in serum and bronchoalveolar lavage fluid, S, Δ, duration of glycemic controlling, the case fatality rate and the incidence of hypoglycemia were compared between the two groups. Results Levels of IL-6, IL-8 and TNF-α in the observation group decreased significantly more than those of the control group (P < 0.05) on the 3rd and the 7th day after admission to hospital. S and Δ in the observation group was significantly lower than those of the control group (t = -4.391 and -4.158, P = 0.000). Duration of glycemic controlling and the case fatality rate of the 28th day in the observation group were lower than those of the control group (t = -10.122, P = 0.000; χ2 = 4.761, P = 0.029). The incidence of hypoglycemia in the two groups had no statistical difference (χ2 = 0.083, P = 0.073). Logistic regression analysis showed that APACHE II score (O^R= 2.247) and blood glucose variability (O^R= 1.449) were independent riskfactors for mortality. Conclusion Insulin pump intensive treatment can reduce all-day blood glucose fluctuations,shorten duration of glycemic controlling, reduce inflammatory response and improve prognosis in patients with diabetes complicated with severe pulmonary infection.