| 项目 | 试验组(n = 105) | 对照组(n = 101) | χ2值 | P值 |
| VAP | 27 (25.7%) | 39 (38.6%) | 3.934 | 0.047 |
| 肾功能不全 | 8 (7.6%) | 7 (6.9%) | 0.036 | 0.849 |
| 菌群失调 | 14 (13.3%) | 15 (14.9%) | 0.098 | 0.754 |
| 多重耐药菌株 | 16 (15.2%) | 15 (14.9%) | 0.006 | 0.938 |