Division of Nephrology, Sakarya Education and Research Hospital, Sakarya, Turkey.
Int Urol Nephrol. 2011 Dec;43(4):1195-9. doi: 10.1007/s11255-011-9977-y. Epub 2011 May 4.
Bioimpedance spectroscopy (BIS) is used to assess volume status in peritoneal dialysis (PD) patients. However, it is proposed that it may be troubling in patients with abnormal fluid distribution and body geometry. It is not clear whether having an empty abdomen or not interferes with the BIS results and its relation with echocardiographic findings in PD patients.
Twenty-five prevalent PD patients were enrolled. Echocardiography and body composition analysis using BIS technique (50 frequencies, the Body Composition Monitor, BCM) were performed. Overhydration (OH), extracellular water (ECW) in liters and OH/ECW ratio were used as volume status indices. Differences in volume and echocardiographic findings, in patients with empty and with full abdomen, and their correlations with echocardiographic parameters were investigated.
Mean age and PD duration were 61 ± 2.5 years and 42 ± 33 months, respectively. Sixty-four percent were male and 24% were diabetic. Mean left ventricular mass index (LVMi) was 131 ± 43 g/m (,) (2) mean left atrium diameter (LA) was 4.1 ± 0.1 cm, mean left ventricular ejection fraction (EF) was 64 ± 10%. Mean OH in patients with full abdomen were 1.67 ± 1.51 L and 1.68 ± 1.48 L, depending on the inclusion or exclusion of the dialysate volume, respectively. In patients with an empty abdomen, mean OHs were 2.12 ± 1.76 L and 1.91 ± 1.56 L, depending on the inclusion or exclusion of the dialysate volume. BIS measurements with an empty, but not with a full abdomen, was related to the echocardiographic parameters.
BIS is a reliable method to evaluate volume status in PD patients. BIS performed after peritoneal equilibration test with an empty abdomen, better reflects overhydration and is related to echocardiographic parameters.
生物阻抗谱（BIS）用于评估腹膜透析（PD）患者的容量状态。然而，有人提出，在流体分布和身体几何形状异常的患者中，它可能会带来困扰。目前尚不清楚腹部是否排空是否会影响 BIS 结果及其与 PD 患者超声心动图结果的关系。
纳入 25 例 PD 患者。进行超声心动图和使用 BIS 技术（50 个频率，身体成分监测仪，BCM）的身体成分分析。超水量（OH）、细胞外液（ECW）以升为单位以及 OH/ECW 比值被用作容量状态指标。研究了腹部排空和腹部充盈患者之间的容量和超声心动图结果差异，及其与超声心动图参数的相关性。
患者的平均年龄和 PD 持续时间分别为 61±2.5 岁和 42±33 个月。64%为男性，24%为糖尿病患者。平均左心室质量指数（LVMi）为 131±43g/m2，左心房直径（LA）平均为 4.1±0.1cm，左心室射血分数（EF）平均为 64±10%。在腹部充盈患者中，包含或不包含透析液量时，平均 OH 值分别为 1.67±1.51L 和 1.68±1.48L。在腹部排空患者中，包含或不包含透析液量时，平均 OH 值分别为 2.12±1.76L 和 1.91±1.56L。腹部排空时的 BIS 测量值与超声心动图参数相关，但腹部充盈时的 BIS 测量值则不然。
BIS 是评估 PD 患者容量状态的可靠方法。排空腹部后进行腹膜平衡试验时的 BIS 测量值更好地反映了超水量，并与超声心动图参数相关。
