组别

肺部感染[例(%)]

低氧血症[例(%)]

住院时间(d, x ± s)

D0组(n = 19)

1 (5.3%)

6 (31.6%)

7.2 ± 2.6

D1组(n = 19)

0 (0.0%)

1 (5.3%)^a

6.5 ± 2.3

D2组(n = 20)

1 (5.0%)

1 (5.3%)^a

6.7 ± 3.1