Risk factors for placenta previa in an Asian population

Abstract

The risk factors for placenta previa were found to be the same for Asian women as those previously recorded for American and European women, but additional factors were detected.

Obstetric factors and pregnancy outcome in placenta previa

“…After adj ustment cesarean section at first birth remained associated with increased risk of placenta previa (OR 1.6 95% CI 1.44-1.76).12 Previous history of abortions (both spontaneous and induced) have been significantly associated with up to three times risk of placenta previa. 2,4,13,14 In population based retrospective cohort study in Nova Scotia, Canada from 1988-1995, 308 cases of placenta previa were identified. Maternal complications included postpartum bleeding (RR-1.86), hysterectomy (RR-33.26), blood transfusion (RR-10.05), septicemia (RR-5.55).…”

Placenta previa: outcomes in scarred and unscarred uterus

“…1 Almost 30 % maternal deaths in the Asian population are due to major obstetrical haemorrhage in placenta previa, especially due to rise in the incidence of cesearean sections. 2 Significant maternal morbidity in the form of increased incidence of fetalmalpresentation, cesearean delivery, increased blood loss and peripartum hysterectomy have been noted in cases of placenta previa and can lead to prolonged hospitalization in these women.…”

Clinical profile and outcome of patients with placenta previa: a study at a tertiary care referral institute in Northern India

“…Hung et al which was done in 457 patients with placenta previa in Asian population, 11.4% patients with placenta previa had history of previous cesarean done. 4 Authors can associate this finding with defects caused by previous scarring in the endometrium by previous CS. 5 The majority of the previa in present study were posterior (53 %), which was similar to the study of BC Young et al who studied 285 cases of placenta previa and found that 69% had posterior placenta previa, as evidence also suggests persistence of low lying posterior previa due to less expansion of the posterior wall compared with the anterior uterine wall.…”