Table 1.
FVOL: fetal vascular obstructive lesions defined as placentae with the presence of one or more of the following lesions: MT: multiple thrombi, IT: isolated thrombus, OE: obliterative endarteritis, HEV: hemorrhagic endovasculitis. P-value*: comparison between the three different control groups and the study group* P-value**: comparison between the very preterm control group and the very preterm study group**.
| Total number of placentae | FVOL | Type of vascular obstructive lesions | ||||
|---|---|---|---|---|---|---|
| MT | IT | OE | HEV | |||
| Study group* | 77 | 50 (64.9%) | 30 (39.0%) | 15 (19.5%) | 15 (19.5%) | 11 (14.3%) |
|
| ||||||
| Very preterm study group (<30 weeks) ∗ ∗ | 41 | 24 (58.5%) | 14 (34.1%) | 10 (24.4%) | 5 (12.2%) | 3 (7.3%) |
|
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|
Control group P-value* |
769 | 130 (16.9%) .0001* |
37 (4.8%) .0001* |
59 (7.7%) .0021* |
20 (2.6%) .0001* |
25 (3.3%) .0002* |
|
| ||||||
|
Preterm control group (<37 weeks) P-value* |
279 | 47 (16.8%) .0001* |
15 (5.4%) .0001* |
27 (9.7%) .00268* |
9 (3.2%) .0001* |
7 (2.5%) .0002* |
|
| ||||||
|
Very preterm control group (<30 weeks) P-value* P-value** |
53 | 13 (24.5%) .0001* .0013** |
7 (13.2%) .0015* .0237** |
5 (9.4%) .1427* .086** |
4 (7.5%) .0772* .049** |
3 (5.7%) .1547* 1.000** |