Table 2.
Comparison of perioperative categorical variables between MBT shunt and CS groups.
| Operation | P-value | ||||
|---|---|---|---|---|---|
| MBT | CS | ||||
| n | % | n | % | ||
| 48 | 100 | 14 | 100 | ||
| Shunt diameter (mm)* | - | ||||
| 3 | 3 | 6.3 | 0 | 0.0 | |
| 3.5 | 13 | 27.1 | 5 | 35.7 | |
| 4 | 23 | 47.9 | 5 | 35.7 | |
| 5 | 9 | 18.8 | 4 | 28.6 | |
| Urgent shunt requirement** | 9 | 18.8 | 2 | 14.3 | 1.000 |
| CPB requirement** | 13 | 27.1 | 7 | 50.0 | 0.120 |
| Simultaneous surgical intervention in addition
to shunt surgery** |
16 | 33.3 | 3 | 21.4 | 0.519 |
| High postoperative inotrope requirement** | 16 | 33.3 | 5 | 35.7 | 1.000 |
| In-hospital mortality*** | 20 | 41.7 | 7 | 50.0 | 0.580 |
| Preoperative anatomy*** | 0.544 | ||||
| Bi-ventricle | 25 | 52.1 | 6 | 42.9 | |
| Single ventricle | 23 | 47.9 | 8 | 57.1 | |
| Acute shunt thrombosis | 4 | 8 | 0 | 0 | 0.578 |
| Progression to Glenn or total correction |
28 | 58.3 | 7 | 50.0 | 0.580 |
CPB=cardiopulmonary bypass; CS=central shunt; MBT=modified BT
*
P-value is not given because the assumption of the chi-square test was not met
**
Fisher’s exact test;
***
Chi-square test