Bioimpedance and echocardiography used interchangeably in volume comparison of dialysis patients

WOS: 000320844300008PubMed ID: 23935312Background: Euvolemia is a major issue in chronic kidney disease. The present study compares cardiac condition and volume status in peritoneal dialysis (PD) and hemodialysis (HD) patients and points out importance of volume control. Methods: From a single-center center, 81 PD and 89 HD patients were enrolled. Echocardiography and body composition analysis using bioimpedance spectroscopy (BIS) technique were performed. Overhydration (OH) and extracellular water (ECW) in liters and OH/ECW % were used as volume indices. Results: Patients were younger (47.6 +/- 14. 5 and 53.1 +/- 11.8 years, p< 0.05), daily urine volume higher (1068 +/- 926 vs 290 +/- 444 ml, p <0.001) and dialysis vintage was shorter (30.1 +/- 18.6 vs 53.6 +/- 35.4 months, p<0.001), systolic blood pressure was lower (127.5 +/- 15.4 vs 140.3 +/- 18.9 mmHg, p<0.001) in PD than HD group respectively. Volume indices were (OH, OH/ECW %, ECW/height, ECW to Intracellular Water ratios (E/I) (p< 0.05)) significantly higher in HD patients compared to PD patients. Over all 66 of 170 patients (39%) had OH/ECW % <5 and OH/ECW % ratio was positively correlated with Left atrium index (R-2:0.105, p<0.05). Interventricular septum diameter and Left ventricular mass index (1.41 +/- 0.24 and 159.6 +/- 48.2 vs. 1.27 +/- 0.17 cm and 115.8 +/- 37 g/m(2), p