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Table 5 Median coefficient of determination R2of the correlation between relative bioZR + Xchanges at 8 kHz and UFV according to comorbidities that can influence the thoracic congestion

From: Towards personalized fluid monitoring in haemodialysis patients: thoracic bioimpedance signal shows strong correlation with fluid changes, a cohort study

Comorbidity Median R2
no COPD and no heart failurea (n = 33) 0.981 [0.859–0.935]
COPD or heart failure (n = 23) 0.982 [0.935–0.994]
heart failure (n = 13) 0.979 [0.887–0.992]
no heart failure (n = 41) 0.982 [0.914–0.993]
COPD (n = 6) 0.988 [0.973–0.997]
no COPD (n = 48) 0.980 [0.858–0.993]
  1. bioZR resistance; bioZX reactance; COPD chronic obstructive pulmonary disease
  2. a Heart failure includes: dilated cardiomyopathy, systolic dysfunction, diastolic dysfunction, left or right sided heart failure