持续性不卧床腹膜透析(continuous ambulatory peritoneal dialysis，CAPD)患者维生素D 缺乏或不足的患病率极高，由于维生素D 的缺乏加重了CAPD 患者体内骨矿物质代谢的异常、微炎症反应及营养状态的异常，从而导致体内铁调素(hepcidin)的蓄积，加重患者体内的铁代谢紊乱。我们通过对CAPD 患者补充维生素D，从而改善患者体内的异常代谢状态及营养情况，减少hepcidin 的蓄积，可能对CAPD患者铁代谢的异常有一定治疗价值。

The prevalence of vitamin D deficiency or inadequate vitamin D intake is very high in patients on continuous ambulatory peritoneal dialysis (CAPD). Iron metabolism disturbance is aggravated due to the accumulation of hepcidin, which is resulted from the vitamin D deficiency induced abnormal bone mineral metabolism, micro-inflammation and malnutrition in CAPD patients. Supplement of vitamin D may be useful for iron metabolism disturbance through improvement of abnormal metabolism and malnutrition status and decrease of hepcidin in CAPD patients.