<qa>  What is the main reason diabetic patients are exposed to high glucose concentrations in peritoneGood glycemic control is often difficult to maintain in diabetic patients treated with CAPD because they are continuously exposed to high concentrations of glucose in peritoneal dialysate. However, recent studies have suggested that diabetic patients who use insulin pump has been shown to reduce glycated hemoglobin levels without an increased risk of hypoglycemia, as compared with a regimen of multiple daily insulin injections, but results in diabetic CAPD patients have not been reported. 