Table 4 Comparisons of pre- and intraoperative findings between non-ITMB and ITMB groups using propensity score-matching analysis
| Â | Before propensity score matched analysis | After propensity score matched analysis | ||||||
|---|---|---|---|---|---|---|---|---|
Group | non-ITMB | ITMB | p | SD | non-ITMB | ITMB | p | SD |
n | 250 | 116 | Â | Â | 106 | 106 | Â | Â |
Preoperative findings | ||||||||
 Female sex (%) | 133 (53.2%) | 79 (68.1%) | 0.007 | 0.318 | 65 (61.3%) | 70 (66.0%) | 0.475 | 0.101 |
 Age (years) | 50 (38–57) | 48 (37–55) | 0.258 | − 0.114 | 48 (36–56) | 48 (37–56) | 0.835 | 0.039 |
 Body mass index ≥25 kg/m2 | 88 (35.2%) | 34 (29.3%) | 0.266 | 0.129 | 32 (30.2%) | 33 (31.1%) | 0.882 | −0.021 |
 Hypertension | 18 (7.2%) | 3 (2.6%) | 0.077 | −0.289 | 2 (1.9%) | 3 (2.8%) | > 0.999 | 0.059 |
 Remnant kidney volume (mL) | 170.0 (148.0–202.0) | 170.0 (150.0–200.0) | 0.938 | −0.025 | 170.0 (148.0–202.0) | 170.0 (150.0–200.0) | 0.721 | 0.014 |
 eGFR (89–60 mL/min/1.73 m2) | 136 (54.4%) | 33 (28.4%) | < 0.001 | −0.573 | 41 (38.7%) | 33 (31.1%) | 0.249 | −0.167 |
Laboratory variables | ||||||||
  WBC count (× 109/L) | 5.9 (5.0–6.9) | 5.8 (5.1–6.8) | 0.836 | 0.009 | 5.8 (5.0–6.8) | 5.9 (5.0–6.8) | 0.881 | 0.012 |
  Hemoglobin (g/dL) | 14.1 (13.3–15.3) | 13.7 (12.7–14.9) | 0.003 | −0.323 | 14.0 (13.2–15.2) | 13.8 (12.8–14.9) | 0.215 | −0.184 |
  Platelet count (×  109/L) | 243.0 (211.8–281.8) | 248.0 (220.5–294.0) | 0.216 | 0.149 | 242.5 (215.0–291.3) | 243.5 (218.0–294.0) | 0.937 | −0.029 |
  Glucose (mg/dL) | 96 (91–103) | 97 (91–103) | 0.655 | 0.083 | 97 (92–103) | 97 (91–102) | 0.703 | −0.055 |
  Albumin (g/dL) | 4.5 (4.2–4.6) | 4.5 (4.3–4.7) | 0.067 | 0.245 | 4.5 (4.3–4.7) | 4.5 (4.3–4.7) | 0.641 | −0.045 |
  Sodium (mEq/L) | 142 (141–143) | 141 (141–143) | 0.024 | −0.219 | 142 (141–143) | 142 (141–143) | 0.766 | −0.028 |
  Potassium (mEq/L) | 4.3 (4.1–4.4) | 4.3 (4.1–4.5) | 0.942 | −0.016 | 4.3 (4.1–4.4) | 4.3 (4.1–4.5) | 0.57 | 0.067 |
  Chloride (mEq/L) | 105 (104–106) | 104 (103–106) | 0.090 | −0.243 | 104 (103–106) | 105 (103–106) | 0.713 | −0.133 |
  INR | 1.00 (0.96–1.03) | 1.00 (0.96–1.04) | 0.350 | 0.096 | 1.00 (0.97–1.03) | 1.00 (0.96–1.04) | 0.561 | −0.065 |
  aPTT (s) | 27.5 (25.6–29.1) | 27.0 (25.8–28.2) | 0.118 | −0.271 | 27.0 (25.6–28.5) | 26.9 (25.8–28.3) | 0.686 | −0.124 |
Intraoperative findings | ||||||||
 Surgery duration (min) | 175 (160–190) | 155 (140–180) | < 0.001 | −0.531 | 165 (150–185) | 160 (140–185) | 0.108 | −0.188 |
Average of vital signs | ||||||||
  SBP (mmHg) | 120 (116–130) | 120 (112–130) | 0.727 | −0.056 | 120 (120–130) | 121 (112–131) | 0.884 | 0.029 |
  DBP (mmHg) | 80 (70–80) | 80 (72–88) | 0.002 | 0.339 | 80 (71–80) | 80 (74–87) | 0.137 | 0.158 |
  Heart rate (beats/min) | 74 (67–80) | 72 (63–80) | 0.266 | −0.086 | 74 (64–80) | 72 (63–80) | 0.455 | −0.06 |
  Body temperature (°C) | 36.5 (36.3–36.7) | 36.3 (36.1–36.6) | 0.002 | −0.275 | 36.5 (36.2–36.7) | 36.4 (36.1–36.6) | 0.311 | −0.091 |
 Hourly fluid infusion (mL/kg/h) | 4.86 (3.35–7.03) | 3.80 (2.56–5.67) | < 0.001 | −0.348 | 4.79 (2.84–6.19) | 3.82 (2.62–5.85) | 0.215 | −0.079 |
 Hourly urine output (mL/kg/h) | 0.98 (0.67–1.71) | 0.96 (0.63–1.52) | 0.261 | −0.284 | 0.86 (0.65–1.39) | 0.96 (0.62–1.51) | 0.655 | 0.039 |
 Total blood loss (mL) | 95 (50–100) | 50 (50–100) | 0.017 | −0.451 | 50 (50–100) | 50 (50–100) | 0.48 | −0.068 |