Assessment of fluid and nutritional status using multifrequency bioelectrical impedance analysis in peritoneal dialysis patients.
OBJECTIVE
The purpose of this study was to evaluate the clinical usefulness and relevance of bioelectrical impedance analysis (BIA) for assessing the fluid and nutritional status in peritoneal dialysis (PD) patients.


METHODS
Statistical analyses between various measures of fluid and nutritional status were performed in 106 cases of 64 patients.


RESULTS
Extracellular fluid/total body water (ECF/TBW) was correlated with systolic blood pressure, extremity edema, and antihypertensive medications (p = 0.042, p < 0.001, and p = 0.029, respectively). Body cell mass (BCM)/height(2) was correlated with SGA rating and PCR (p < 0.001 and p = 0.002, respectively). ECF/TBW and BCM/height(2) significantly predicted extremity edema (p < 0.001) and SGA rating (p = 0.001), respectively. ROC analysis yielded an ECF/TBW cut-off of 0.36 and a BCM/height(2) cut-off of 11.23. When the BCM/height(2) cut-off of 11.23 was applied to subclinical patients (SGA score ≥6), a significant difference in SGA rating was detected in subgroups (p = 0.010).


CONCLUSIONS
BIA yields useful and relevant information about hydration and nutritional status in PD patients.
Division of Nephrology, Department of Internal Medicine, Kyungpook National University School of Medicine, Clinical Research Center for End Stage Renal Disease, Daegu, Korea.
Seung-Hyea
SH
Hyun
Ji-Young
JY
Choi
Jang-Hee
JH
Cho
Sun-Hee
SH
Park
Chan-Duck
CD
Kim
Yong-Lim
YL
Kim
D019540:Area Under Curve; D001823:Body Composition; D001826:Body Fluids / Q000737:chemistry*; D017097:Electric Impedance; D045604:Extracellular Fluid / Q000737:chemistry; D005260:Female; D006439:Hemodynamics; D006801:Humans; D007424:Intracellular Fluid / Q000737:chemistry; D008297:Male; D044342:Malnutrition / Q000209:etiology; D009752:Nutritional Status; D010530:Peritoneal Dialysis / Q000009:adverse effects; D012372:ROC Curve