OBJECTIVE: The aim of this study was to compare the clinical characteristics of placental abruption according to the presence or absence of hypertensive disorders in pregnancy.
METHODS: The retrospective analysis was performed in total 363 cases of placental abruption among 25,895 deliveries during 5 years from January, 2003 to December, 2007 in 8 hospitals of Catholic university in Korea. Maternal characteristics and neonatal outcomes were compared with parametric test.
RESULTS: The incidence of placental abruption was 1.40% during the study period. The proportion of patients complicated with hypertensive disorders was 33.1%. There was no difference in maternal age and the number of previous pregnancy between two groups with or without hypertensive disorders. As expected, mean gestational age at delivery was lower in placental abruption with hypertensive disorders compared to those without the diseases (237.1 days vs 239.1 days). The incidence of abnormal fetal presentation, multiple gestation, PPROM, and polyhydramnios were more common in patients with placental abruption without hypertensive disorders. On the other hand, the incidence of maternal thrombophilia was significantly higher in patients with placental abruption with hypertensive disorders. The patients with placental abruption with hypertensive disorders had higher incidence of abdominal pain, fetal distress, uterine contraction, and uterine hypertonus (p<0.05). In terms of maternal complication, the patients with placental abruption with hypertensive disorders had more severe complications including shock, coagulopathy and renal failure (p<0.05) and had worse perinatal outcome including FDIU (fetal death in uterus) and neonatal death (10.8% vs 10.3%).
CONCLUSION: In patients with placental abruption with hypertensive disorders in pregnancy, maternal complications were more common and prenatal outcome was worse compared to patients with placental abruption without hypertensive disorders.
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