|
Calculated-delivered urea clearance correlation |
||
| Parameter |
KCALC - KDEL (ml min-1) |
r |
|
|
||
| Total |
-1.7 ± 5.9 |
0.97 |
| CVVHpost |
-2 ± 4.3 |
0.96 |
| CVVHpre |
1.4 ± 6 |
0.96 |
| CVVHD |
-4.5 ± 7.7 |
0.97 |
| CVVHDF |
-1.8 ± 5.3 |
0.98 |
| Subgroups |
||
| KCALC < 60 ml min-1 |
0.05 ± 3.3 |
0.95 |
| KCALC > 60 ml min-1 |
-5.2 ± 8.2a |
0.89 |
| KCALC at T0 |
-1.04 ± 6.3 |
0.97 |
| KCALC at T18 |
-2.8 ± 5.2 |
0.96 |
| KCALC < 60 ml min-1 at T0 |
0.4 ± 3.6 |
0.95 |
| KCALC > 60 ml min-1 at T0 |
-4.8 ± 9.7a |
0.87 |
| KCALC < 60 ml min-1 at T18 |
-0.6 ± 2.9 |
0.94 |
| KCALC > 60 ml min-1 at T18 |
-5.5 ± 6.5a |
0.89 |
|
|
||
| Delivered spKt/V |
1.25 ± 0.6 |
|
| Delivered/prescribed |
0.89 |
|
|
aP < 0.05 (referred to total KCALC - KDEL difference). Where errors are given, results are means ± SD. CVVH, continuous veno-venous hemofiltration; CVVHD, continuous veno-venous hemodialysis; CVVHDF, continuous veno-venous hemodiafiltration; KCALC, calculator-estimated urea clearance; KDEL, delivered clearance evaluated from urea concentrations on simultaneous blood and effluent samples; T0, therapy start; T18, 18 to 24 hours of uninterrupted therapy. | ||
Ricci et al. Critical Care 2005 9:R266 doi:10.1186/cc3517 |
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