Bergia R, Bellini M E, Valenti M, Berto I M, Caramello E, Dionisio P, Pellerey M, Bajardi P
Nephrology Department, Infermi Hospital, Biella, Italy.
Perit Dial Int. 1993;13 Suppl 2:S512-4.
We assessed the utility of bioelectric impedance analysis (BIA) and anthropometry for longitudinal evaluation of body composition in continuous ambulatory peritoneal dialysis (CAPD) patients. Eleven subjects were studied at the beginning of CAPD and again at regular intervals during the first 6 months of treatment. The significant weight gain that occurs in our patients is mainly due to a rise in total body water (TBW), as measured by BIA, during the first weeks of CAPD, and later on due to a body fat increase. Anthropometry seems more reliable than BIA in the evaluation of body mass, because the latter is derived from TBW in BIA. Therefore, any change in TBW that occurs in a CAPD patient necessarily causes a similar change in the fat-free mass. In our experience, only the combined use of both anthropometry and BIA allows a proper assessment of body composition in patients on CAPD.
我们评估了生物电阻抗分析（BIA）和人体测量学在持续非卧床腹膜透析（CAPD）患者身体成分纵向评估中的效用。11名受试者在CAPD开始时接受研究，并在治疗的前6个月期间定期再次进行研究。我们的患者出现的显著体重增加主要是由于在CAPD开始的头几周通过BIA测量的总体水（TBW）增加，随后是由于体脂增加。在评估体重方面，人体测量学似乎比BIA更可靠，因为后者在BIA中是由TBW推导得出的。因此，CAPD患者中发生的TBW的任何变化必然会导致去脂体重发生类似变化。根据我们的经验，只有人体测量学和BIA的联合使用才能对CAPD患者的身体成分进行适当评估。
