Table 4.
Obstruction type | No. | Decrease in TBIL levels after stenting, % | P value | Survival | P value | Primary patency | P value | |
---|---|---|---|---|---|---|---|---|
Distal | 77 | 52.4 | (32.7–65.4) | – | 86.7±13.9 | – | 81.2±13.1 | – |
Bismuth I | 69 | 52.9 | (22–68.2) | – | 187.3±44 | – | 155.3±35.1 | – |
Bismuth II Unilobar stenting Bilobar stenting |
22 19 3 |
34.5 33.8 39.1 |
(7.9–57) (27.6–52.2) (19.2–58.3) |
0.948 | 225.9±98.6 164.2±83 249.2 |
0.340 | 161.9±77.1 118.9±63.6 176.9 |
0.424 |
Bismuth III Unilobar stenting Bilobar stenting |
37 25 12 |
38.5 37.2 43.4 |
(8.8–60.6) (16.1–60.9) (12.1–61.9) |
0.357 | 134.4±23 98.1±28 200.7±98.1 |
0.032 | 106.9±21 70±21.2 178.8±22 |
0.007 |
Bismuth IV Unilobar stenting Bilobar stenting |
17 11 6 |
35.3 22.0 72.4 |
(2.2–72.7) (7.4–67.3) (65–82.6) |
< 0.001 | 80.9±22.6 47±12 123±54.2 |
0.257 | 65.8±20.8 47±13.9 123±54.2 |
0.280 |
Method of liver parenchyma drainage | ||||||||
Partial-liver Whole-liver |
55 167 |
35.6 52.5 |
(0.5–60.9) (26.2–70) |
< 0.001 | 115.2±31.1 153.2±24.6 |
0.035 | 77.5±22.2 125.2±18 |
0.044 |
TBIL – total bilirubin. Percentage changes in bilirubin values after stenting are expressed as median (interquartile range). Survival and primary stent patency are expressed as estimated mean ± standard error. The decrease in serum bilirubin levels was statistically significant for all types of obstruction according to the Bismuth-Corlette classification (P<0.05).