Pregnancy Outcome in Patients with “Corrected” Mid-Trimester Placenta Previa
Placenta Previa, defined as placental implantation over the internal cervical os, occurs in 1 in 300 live births.
Figure 1. Depiction of Normal Gestation (left) versus uncorrected Placenta previa ( right). Note location of placenta in relationship to cervix
- At mid-trimester, evidence of placental tissue covering the cervical os will be found in 5 -15% of patients. Approximately 90% of these cases resolve to a normal position at term.
- An increased risk of perinatal and neonatal complications has been reported in patients with “corrected” mid-trimester placenta previa.
- The exact reasons for adverse pregnancy outcome associated with corrected mid-trimester placenta previa are not clearly understood.
- To assess pregnancy outcomes in patients with “corrected” mid- trimester placenta previa in order to determine what effects if any this condition imposes on maternal and infant welfare.
43 patients presenting with corrected mid-
trimester placenta previa compared to control group of 29
normal gestations within same time period…
- We reviewed our experience with a series of 43 women presenting with “corrected” mid-trimester placenta previa and compared them to a randomly selected control group of similar patients (n=29) who did not have mid-trimester placenta previa from the same perinatal registry within the same period.
- Outcome Measures:
- Premature Rupture of Membranes
- Placental Abruption
- Preterm Delivery
- Congenital Anomalies
- Apgar Scores
- The risk of perinatal complications in “corrected” mid trimester placenta previa remains high despite conversion of placenta to a normal position.
- Management of these patients therefore requires close attention to hematological status pre-delivery as this presented the greatest risk for postpartum morbidity.