Table 2 Clinical variables of the patients in the automatic urinometer group and the manual urinometer groupa
Variable | AU (n = 18) | MU (n = 16) | P -value |
|---|---|---|---|
Female sex, % | 28 | 50 | 0.29 |
Age, yr | 68.0 (64.3 to 75.5) | 66.5 (63.5 to 73.5) | 0.75 |
Weight, kg | 79.2 ± 15.3 | 80.3 ± 7.9 | 0.83 |
Height, cm | 174 ± 5.8 | 172 ± 9.8 | 0.48 |
BMI, kg/m2 | 1.9 ± 0.2 | 2.0 ± 0.2 | 0.74 |
EuroSCORE II, % | 1.7 (0.9 to 2.6) | 1.6 (0.9 to 3.1) | 0.85 |
Preoperative albumin, g/L | 39.0 (36.0 to 40.3) | 38.0 (36.0 to 39.8) | 0.60 |
Preoperative creatinine, μmol/L | 82.5 (67.8 to 97.8) | 86.5 (62.5 to 100) | 0.83 |
Preoperative eGFR, ml/min | 78.0 (62.4 to 104) | 75.4 (67.8 to 89.4) | 0.91 |
IDDM, % | 6 | 6 | 1.00 |
COPD, % | 6 | 6 | 1.00 |
LVEF <50%, % | 33 | 31 | 1.00 |
Surgical procedures | |||
CABG, % | 28 | 25 | 1.00 |
Single-valve replacement, % | 44 | 44 | 1.00 |
Valve + CABG, % | 11 | 19 | 0.65 |
Others, % | 17 | 13 | 1.00 |
ECC, min | 84.5 (71.5 to 133) | 79.5 (67.0 to 127) | 0.56 |
ICU stay, hr | 22.5 (18.8 to 25.0) | 23.0 (18.5 to 25.3) | 0.77 |
Ventilation time in ICU, hr | 3.0 (1.0 to 4.3) | 2.5 (1.0 to 4.8) | 0.96 |
Inotropes in ICU, % | 0 | 6 | 0.47 |