Table 2

Treatments characteristics

Parameter
Value

No. of treatments
106
Total no. of examined KCALC/KDEL(ml min-1)
179 (106 T0; 73 T18)
     CVVHpost
38 (19 T0; 19 T18)
     CVVHpre
30 (23 T0; 7 T18)
     CVVHD
29 (23 T0; 6 T18)
     CVVHDF
82 (42 T0; 42 T18)
Total prescribed KCALC (ml min-1)
48.6 ± 24; 18–100
     CVVHpost
35.6 ± 16; 16–66
     CVVHpre
48.8 ± 19; 15–83
     CVVHD
56.2 ± 28; 20–100
     CVVHDFa
52.2 ± 24; 23–100
Total prescribed net UF (ml h-1)
250 ± 100; 0–500
Treatment hours per day
20 ± 3; 8.5–24
Treatment hours per run
17 ± 6; 5–24
Downtime (hours)
3 ± 2

aDuring continuous veno-venous hemodiafiltration (CVVHDF) modality, prescribed clearance was delivered with even hemofiltration and hemodialysis flow rates. Where errors are given, results are means ± SD; ranges follow a semicolon. CVVH, continuous veno-venous hemofiltration; CVVHD, continuous veno-venous hemodialysis; KCALC, calculator-estimated urea clearance; KDEL, delivered clearance evaluated from urea concentrations on simultaneous blood and effluent samples; T0, at therapy start; T18, after 18 to 24 hours of uninterrupted therapy.

Ricci et al. Critical Care 2005 9:R266   doi:10.1186/cc3517