Table 2.
Relationship of fetal culture status to presence of M. pulmonis in the placenta and amniotic fluid.
| Fetus positivea | MP only (n = 22) | Nic + MP (n = 33) |
|---|---|---|
| PL (+) AF (+)b | 19/22 (86.5%) | 32/33 (97%) |
| PL (+) AF (–) | 2/22 (9%) | 1/33 (3%) |
| PL (–) AF (+) | 0/22 (0%) | 0/33 (0%) |
| PL (–) AF (–) | 1/22 (4.5%) | 0/33 (0%) |
| Fetus negative | MP only (n = 5) | Nic + MP (n = 0) |
| PL (+) AF (+) | 3/5 (60%) | 0 |
| PL (+) AF (–) | 1/5 (20%) | 0 |
| PL (–) AF (+) | 0/5 (0%) | 0 |
| PL (–) AF (–) | 1/5 (20%) | 0 |
aFetal colonization was more likely (P < 0.05) to occur with nicotine exposure (MP only, 81.5% (22/27) culture-positive fetuses; Nic + MP, 100% (33/33) culture-positive fetuses).
bFetal colonization was most likely (P < 0.01) to occur when both the placenta and amniotic fluid were culture positive, regardless of treatment group.