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Table 2 Comparison of perioperative outcomes

From: Obesity and perioperative adverse events in patients undergoing complex revision surgery for the thoracolumbar spine

Variable

Obese (N = 54)

Non-obese (n = 60)

P Value

OR (95% CI)

Operative time (minutes), mean ± SD (range)

387.1 ± 224.3 (108-1160)

372.2 ± 172.7 (122-937)

0.693

N/A

EBL (mL), mean ± SD (range)

1235.5 ± 1792.4 (75-12,321)

856.2 ± 744.0 (50-4600)

0.152

N/A

EBL > 1 L, n (%)

22 (40.7)

19 (31.7)

0.490

1.29 (0.63-2.63)

Intraoperative pRBC transfusion units, mean ± SD (range)

2.2 ± 2.6 (0-15)

1.7 ± 1.6 (0-8)

0.238

N/A

Post-operative LOS (days), mean ± SD (range)

7.1 ± 5.6 (2-36)

6.3 ± 4.0 (1-19)

0.375

N/A

Discharge Disposition, n (%)

 Home

20 (37.0)

19 (31.7)

0.547

1.27 (0.59-2.76)

 Facility

34 (63.0)

41 (68.3)

0.547

0.79 (0.36-1.71)

30-day Reoperation, n (%)

4 (7.4)

5 (8.3)

0.855

0.88 (0.22-3.46)

30-day Readmission, n (%)

4 (7.4)

6 (10.0)

0.626

0.72 (0.19-2.70)

In-hospital mortality, n (%)

0 (0.0)

1 (1.7)

0.539

0.36 (0.01-9.12)

Perioperative Adverse Events, n (%)

 Any adverse events

22 (40.7)

33 (55.0)

0.130

0.56 (0.27-1.18)

 Post-op anemia requiring transfusion

8 (14.8)

18 (30.0)

0.058

0.41 (0.16-1.03)

 Cardiac (cardiac arrest, MI)

1 (1.9)

2 (3.3)

0.487

0.55 (0.05-6.21)

 Wound complication (dehiscence, infection)

4 (7.4)

7 (11.7)

0.763

0.61 (0.17-2.20)

 Delirium

2 (3.7)

8 (13.3)

0.089

0.25 (0.05-1.23)

 AKI

5 (9.3)

7 (11.7)

0.676

0.77 (0.23-2.59)

 Pneumonia

3 (5.6)

6 (10.0)

0.386

0.53 (0.13-2.23)

 UTI

2 (3.7)

9 (15.0)

0.059

0.21 (0.04-1.06)

 Urinary retention

4 (7.4)

3 (5.0)

0.595

1.52 (0.32-7.12)

 DVT

4 (7.4)

6 (10.0)

0.626

0.72 (0.19-2.70)

 Dural tear/epidural hematoma/nerve injury

5 (9.3)

3 (5.0)

0.414

1.85 (0.42-8.12)

  1. OR Odds ratio, EBL Estimated blood loss, SD Standard deviation, CI Confidence interval, pRBC Packed red blood cells, LOS Length of stay, MI Myocardial infarction, AKI Acute kidney injury, UTI Urinary tract infection, DVT Deep vein thrombosis