Improvement of Type 2 Diabetes Mellitus in Obese and Non-Obese Patients after the Duodenal Switch Operation

Figure 4

Reduction of insulin usage after BPD-DS dependent on preoperative duration of insulin usage. Group I “OAD” was treated by oral antidiabetic drugs only and used no insulin postoperatively. Group II used insulin for less than 5 years preoperatively and needed no insulin at discharge and after. Group III used insulin for 5 to 10 years. Thirty-seven percent of patients in this group needed insulin at discharge (light brown bar), but all patients in this group were free of insulin 1 year after the operation. Group IV used insulin for more than 10 years. Seventy-three percent of patients in this group needed insuline at discharge (light brown bar), 23% of patients in this group still needed insuline 1 year after the operation (white bar).