Observational studyJornal brasileiro de nefrologia
Bioimpedanciometry in nutritional and hydration assessments in a single dialysis center.
Observational study in Jornal brasileiro de nefrologia. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 8 citations in OpenAlex.
- Bioelectrical impedance analysis for assessing hydration status in patients undergoing maintenance hemodialysis.World journal of nephrology · 2026Article
- Optimizing hemodialysis management using bioelectrical impedance analysis: emphasizing the significance of the phase angle.Renal failure · 2025Review
- The value of bioimpedance analysis in the assessment of hydration and nutritional status in children on chronic peritoneal dialysis.Renal failure · 2024Article
- Finding meaning in bioimpedance for people treated with hemodialysis.Jornal brasileiro de nefrologiaArticle
- Influence of albumin and phase angle on the survival of patients with chronic kidney disease on hemodialysis: a prospective study.Jornal brasileiro de nefrologiaArticle
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundBioimpedance analysis (BIA) has been demonstrated to add accuracy to nutritional and volume status assessments in dialysis (HD) patients.
aimto describe a sample of dialysis patients from a single center on their demographics and BIA of volume distribution and nutritional status, and mortality during 12-month follow-up.
methodsprospective observational cohort study to evaluate vintage HD patients with single-frequency BIA.
resultswe evaluated 82 patients, 29% over 65 years old. Elderly patients had higher ECW/TBW (0.51 vs. 0.44, p < 0.0001), and narrower phase angle (PhA) (4.9 vs. 6.4º, p < 0.0001). Fifteen patients (18.2%) died during follow-up, eight (53%) were elderly. Death was associated with age (62.6 vs. 50.2 years, p = 0.012), post-HD PhA (4.8 vs. 6.2º, p = 0.0001), and post-HD ECW/TBW (0.50 vs. 0.45, p = 0.015). The ROC curve analysis to predict mortality found ECW/TBW ≥ 0.47 and PhA ≤ 5.5º to have the best sensitivity and specificity. One-year patient survival was lower with post-HD ECW/TBW ≥ 0.47 (69.5% vs. 90.6%, p = 0.019), age ≥ 65 years (64.2%, vs. 86.2%, p = 0.029), and PhA ≤ 5.5º (68.2 vs. 91.0%, p = 0.002). Cox regression analysis demonstrated that PhA [HR 5.04 (95%CI 1.60-15.86), p = 0.006] remained associated with death after adjusting for age and ECW/TBW.
conclusionBIA is useful in assessing volume distribution and nutrition in HD patients, and combined with clinical judgement, may help determine dry weight, especially in elderly patients. Narrower PhA and higher ECW/TBW after HD were associated with poorer one-year survival.
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