5.
两组预后比较 [例（%）]
| 组别 | n | 手术 | 死亡 |
| 常规组 | 50 | 10(20) | 3(6) |
| 多巴胺组 | 50 | 2(4) | 1(2) |
| χ2/χc2值 | 6.061 | 1.042 | |
| P值 | 0.014 | 0.307 |
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