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Table 4 Calcium balance assessment: demographic and dialysis characteristics

From: Regional citrate anticoagulation in hemodialysis: an observational study of safety, efficacy, and effect on calcium balance during routine care

  Heparin-anticoagulated acetate-acidified dialysate (n = 15) Heparin-anticoagulated citrate-acidified dialysate (n = 15) Regional citrate-anticoagulated dialysis Sessions (n = 15) p value
Age (years) 76 (range 67–90) 77 (range 55–86) 84 (range 59–87) 0.62
Sex 4 male, 5 female 4 male, 5 female 5 male, 1 female 0.3
Median dialysis sessions per patient 1 (range 1–3) 1 (range 1–3) 1 (1–5)  
Gambro Dialyzer 210H 13 13 15  
Gambro Dialyzer 170H 2 2 0  
Blood flow (mL/min) 350 (IQR 305 to 350) 330 (IQR 310 to 350) 300 (IQR 300 to 300) 0.0008
Kt/V per session 1.24 (IQR 1.2 to 1.37) 1.42 (IQR 1.26 to 1.54) 1.23 (IQR 1.06 to 1.28) 0.01
Dialysis session duration (minutes) 240 (range 240 to 270) 240 (range 240 to 270) 240 (range 210 to 300) 1
Prescribed net ultrafiltration (L/h dialyzed)a 0.66 ± 0.21 0.71 ± 0.23 0.59 ± 0.24 0.4
Calcium infused (mmol/h dialyzed) 0 0 17.2 (range 11.6 to 20)  
Spent dialysate volume (L) 124.0 (IQR 122.7 to 125.0) 124.0 (IQR 122.4 to 124.8) 131.0 (127 to 148.7) 0.002
Dialysate [Caion] prior to commencement of dialysis in mmol/L 1.04 (range 1.0 to 1.09) 0.85 (range 0.83 to 1.05)   <0.00005
Initial dialysate total Ca (mmol/L) 1.22 ± 0.03 1.43 ± 0.07 0.01 ± 0.004 <0.00005
Spent dialysate total Ca (mmol/L) 1.25 ± 0.04 1.46 ± 0.05 0.55 ± 0.07 <0.00005
Start of session plasma [Caion] (mmol/L) 1.12 ± 0.09 1.12 ± 0.1   0.91
End of session plasma [Caion] (mmol/L) 1.09 ± 0.04 1.06 ± 0.04 1.06 ± 0.05 0.21
  1. aData on net ultrafiltration was missing for 1 session in each heparin-anticoagulated group