From: Risk of contrast induced nephropathy in the critically ill: a prospective, case matched study
 | Pairs | Contrast | Non-Contrast | Difference | Paired P |
---|---|---|---|---|---|
mClCr, mL/minute | Â | Â | Â | Â | Â |
   Scan day, normalized to BSAa | 53 | 66 ± 30 | 65 ± 29 | 1 ± 5 | 0.2934 |
   Scan day | 53 | 78 ± 39 | 75 ± 34 | 3 ± 16 | 0.1768 |
   Day before scan | 24 | 78 ± 27 | 75 ± 28 | 4 ± 21 | 0.4102 |
Scan day calculated ClCr, mL/min | Â | Â | Â | Â | Â |
   Cockcroft-Gault formula | 53 | 86 ± 33 | 90 ± 46 | -5 ± 48 | 0.8456 |
   MDRD formula | 53 | 75 ± 28 | 76 ± 34 | -1 ± 31 | 0.8828 |
SCr, μmol/L |  |  |  |  |  |
   Last value before scanning | 53 | 92 ± 30 | 95 ± 41 | -4 ± 37 | 0.4860 |
   Lowest in the preceding week | 53 | 82 ± 28 | 85 ± 40 | -3 ± 37 | 0.6899 |
   Highest in the preceding week | 53 | 137 ± 80 | 134 ± 65 | 3 ± 97 | 0.9753 |
SCr variability in pre-scan week, % | 53 | 67 ± 85 | 63 ± 62 | 4 ± 106 | 0.9049 |
Last pre-scan BUN, mmol/L | 53 | 7.1 ± 3.6 | 8.2 ± 4.6 | -1.1 ± 5.4 | 0.2053 |
Urine vol in 3 hrs before scan, mL | 53 | 311 ± 365 | 237 ± 168 | 74 ± 401 | 0.3503 |