Table 2 Changes of flow resistance in the duodenal pH model
From: Evaluation of valve function in antireflux biliary metal stents
Type of antireflux valve | Flow rate (L/min) | Flow resistance (mbar, mean ± standard deviation) | p-value | |
|---|---|---|---|---|
Baseline | 12 weeks | |||
Wine glass type (n = 3) | 0.25 | 103.2 ± 2.4 | 118.9 ± 2.4 | 0.109 |
0.5 | 154.6 ± 4.7 | 177.5 ± 10.0 | 0.109 | |
0.75 | 217.8 ± 4.1 | 253.0 ± 17.3 | 0.109 | |
1.0 | 281.6 ± 8.9 | 338.5 ± 23.5 | 0.109 | |
1.25 | 352.6 ± 7.9 | 447.4 ± 44.4 | 0.109 | |
Windsock type (n = 5) | 0.25 | 36.2 ± 0.8 | 50.8 ± 2.6 | 0.043 |
0.5 | 53.4 ± 1.8 | 63.3 ± 1.9 | 0.043 | |
0.75 | 69.4 ± 1.6 | 81.5 ± 1.8 | 0.041 | |
1.0 | 87.2 ± 0.8 | 98.1 ± 4.0 | 0.043 | |
1.25 | 104.8 ± 0.8 | 117.2 ± 5.3 | 0.043 | |
Funnel type (n = 5) | 0.25 | 35.8 ± 0.8 | 48.0 ± 2.0 | 0.043 |
0.5 | 51.6 ± 0.5 | 59.7 ± 2.7 | 0.043 | |
0.75 | 64.2 ± 0.8 | 76.7 ± 1.5 | 0.039 | |
1.0 | 84.2 ± 1.6 | 94.7 ± 2.2 | 0.041 | |
1.25 | 102.0 ± 0.7 | 114.9 ± 4.0 | 0.043 | |