Korean J Obstet Gynecol.
1999 Mar;42(3):481-486.
A Clinical Study of Placenta Previa
Abstract
OBJECTIVE
A Clinical Study of Placenta P#revia done by cesarean section and the study of preterm delivery that is major cause of premature motality even thought expected managment of placente previa.
METHODS
This study was evaluated for the clinical analysis on the 641 patients with placenta previa among total deliveries of 56,120 cases at the St. Mary and Holy Family hospital of Catholic University from Jan. 1,1989 to Dec.31,1997.
RESULTS
The following results were obtained: 1. The total incidence of placenta previa was 1.14%. 2. The incidence of placenta previa increases with age. 3. Placenta previa has occurred more often in multipara(60.2%) than primipara(39.8%), and placenta previa has occurred more often in women who had experienced abortion(71.8%) than women who hadnt(28.2%). 4. The types of placenta previa distributed 326 cases of totalis(50.9%), 110 cases of partialis(17.2%), 99 cases of marginal(15.4%) and 106 cases of low lying placenta(16.4%). 5. The fetal presentation distributed 557 cases of vertex(86.9%), 49 cases of breech(7.6%), 28 cases of transverse lie(4.4%). 6. The types of uterine incision included 543 cases of low sepnent transverse incision(84.7%), 46 cases of classical incision(7.2%), 9 cases of inverted T incision and 43 cases of cesarean hysterectomy(6.7%). 7. Premature delivery of placenta previa prior to completion of 37 weeks was 186 cases(29.0%) and low birth infant less than 2,500gm was 128 cases(20.0%).and perinatal mortality rate was 28.0 per 1,000. 8. During delivery, 278 cases of placenta previa(43.4%) were transfused with mean 3.6 pints. Incidence of vaginal bleeding was 49.3% of placenta previa,mean admission day until delivery was about 5 day.
CONCLUSION
there is a strong association between advancing age and incidence of placenta previa, and then. the risk increases with parity & the number of abortion. Considering the mean volume of blood loss more than 3 pints of blood should be prepared befor delivery.
