This clinical study was undertaken for evaluation of 502 cases associated with hypertensive disorders in pregnancy, who were admitted to department of Obstetrics and Gynecology, St. Columban Hospital from January, 1988 to December, 1992.
@ES The results were as follows;
@EN 1. The incidence of hypertensive disorders in pregnancy(HDIP) was 2.83% of total deliveries.
2. Using the classfication of American committee on maternal Welfare, the incidence of hypertensive disorders in pregnancy was as follows;
Preeclampsia, mild: 56.9%
Preeclampsia, severe: 38.25%
Eclampsia: 1.59%
Chronic hypertensive vascular disorders: 3.18%
3. The highest number of HDIP was observed in the age group of 25-29, but the frequency of disease was higher in the age group above 35 years old.
4. According to parity, the higher frequency was noted in nullipara.
5. Among four seasons, 29.5% of the patients were occurred in winter which was the most prevalent season, but a significant difference in seasonal distribution was not noted.
6. Among four blood type, 44.8% of the patients were occurred in blood type A which was followed B, O, AB, in orders.
7. There was slightly higher male predominance in fetuses of the hypertensive disorders in pregnancy, but a significant difference was not seen.
8. The incidence of HDIP in twin pregnancy was 18.75%.
9. As to the gestational age and the birth weight, the preterm and the low birth weight were higher incidence in HDIP group than non-HDIP group.
10. The disease was more prevalent in women who did not take antenatal care.
11. 60.6% of the patients were delivered vaginally, 30.9% spontaneous, 21.9% induced, 7.8% with vacuum extraction and 39.4% of the patients were performed cesarean section.
12. As to maternal complication, anemia was found in 24.5%, postpartum hemorrhage in 4.6%, abruptio placentae in 3.4% and maternal death in 0.2%.
13. As to fetal complication, intrauterine growth retardation was found in 20.3%, stillbirth in 0.8% and neonatal death in 3.6%.
14. The mean level of platelet count was 226,800/mm3, and the group less than 100,000 was 4.5%.
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