Evaluation of Hypoglycemic Risk in Patients with Type 2 Diabetes on Hemodialysis under Tight Glycemic Control

Patients with type 2 diabetes on hemodialysis (T2HD) have unique glycemic profile resulting from hemodialysis, especially hemodialysis-related hypoglycemia, which is present in approximately 20% of them. We analyzed 48-hour sensor glucose level (SGL) on dialysis and non-dialysis days, and time in range (TIR, 70-180 mg/dL), time below range (TBR, <70 mg/dL) in 115 T2HD using continuous glucose monitoring (CGM) and evaluated the difference in clinical parameters between well-controlled group (TIR >70% and TBR <4%) and hypoglycemia group (TIR >70% and TBR ≥4%). Sixty-six patients of well-controlled group (46 males, age 62±12 years, HbA1c 6.0±0.9%, glycated albumin (GA) 18.5±4.1%) and 11 cases of hypoglycemia group (8 males, age 65±13 years, HbA1c 5.9±0.7%, GA 17.4±3.6%) were selected for retrospective analysis. There were no differences in sex, age, dry weight, body mass index, duration of diabetes, or duration of dialysis between two groups. Likewise, HbA1c and GA were not significantly different (P=0.7044, P=0.4151). Glucose levels at both the beginning and the end of dialysis were significantly lower in the hypoglycemia group (164.1±42.8 mg/dL vs. 131.0±49.2 mg/dL (P=0.0227) and 118.8±40.2 mg/dL vs. 86.8±26.1 mg/dL (P=0.0130), respectively). On the other hand, CGM data showed significantly lower mean SGL (P=0.0005) and significantly higher coefficient of variation of SGL (P=0.0014) in the hypoglycemia group. Thus, both HbA1c and GA are not sufficient to predict the presence of hypoglycemia in strict glycemic control in T2HD. Therefore, for good glycemic control without hypoglycemia in T2HD, it is important to measure glucose levels at the beginning and end of dialysis and to evaluate glucose profiles by CGM. Disclosure A.Hayashi: Research Support; Abbott Japan Co., Ltd., Roche Diabetes Care, Speaker's Bureau; Abbott Japan Co., Ltd., Medtronic, Terumo Corporation. N.Shimizu: None. A.Suzuki: None. R.Fujishima: None. K.Matoba: None. T.Masaki: None. T.Miyatsuka: Speaker's Bureau; Eli Lilly Japan K.K., Novo Nordisk, Sanofi K.K., Mitsubishi Tanabe Pharma Corporation, Sumitomo Dainippon Pharma Co., Ltd., Teijin Pharma Limited, Sanwa Kagaku Kenkyusho, Daiichi Sankyo. Funding TERUMO Life Science Foundation (21-III-5030); Japan Association for Diabetes Education and Care (2021-YNG-028); Japan Society for the Promotion of Science (22K15674)