Table 1.
Baseline characteristics of the 70 patients with Bismuth IV hilar obstruction
| Contrast agent | Air | CO2 | P-values | |
|---|---|---|---|---|
| Study time frames | October 2013 – February 2015 | May 2015–June 2016 | July 2016 – November 2017 | |
| Patients | 22 | 18 | 30 | |
| Age | 57.74 ± 9.34 | 58.32 ± 13.66 | 58.64 ± 11.52 | 0.523 |
| Male-to-Female ratio | 16:6 | 14:4 | 19:11 | 0.60 |
| Symptoms | ||||
| Jaundice | 22 (100%) | 18 (100%) | 30 (100%) | > 0.99 |
| Abdominal pain | 6 (27.3%) | 3 (16.7%) | 4 (13.3%) | 0.46 |
| Fever | 2 (9.1%) | 4 (22.2%) | 7 (13.3%) | 0.391 |
| Pruritus | 6 (27.3%) | 3 (16. 7%) | 5 (16.7%) | 0.647 |
| WBC (×109/L) | 7.15 ± 2.65 | 8.70 ± 3.82 | 7.17 ± 3.30 | 0.131 |
| Liver function tests | ||||
| Serum bilirubin (umol/L) | 320.39 ± 100.86 | 264.23 ± 82.92 | 252.89 ± 74.94 | 0.976 |
| ALP (median, [Q1, Q3]) | 450.21 (110.35, 609.14) | 413.97 (125.39, 598.16) | 501.47 (150.46, 622.16) | 0.108 |
| γ-GT (median, [Q1, Q3]) | 350.69 (169.83, 626.72) | 410.34 (209.83, 598.14) | 408.91 (217.38, 663.27) | 0.195 |