Volume : VI, Issue : II, February - 2017

Prediction of migration of low lying placenta in mid trimester Ultrasound

Aditya Prakash Misra, Ritu Mishra

Abstract :

 Objective: To predict the migration of low lying placenta in the second trimester ultrasonogram (USG).

Methods: routine obstetrics USG in second trimester(13 weeks onwards) was done in all the patients attending antenatal clinic. Those cases who had low lying placenta i.e lower edge of placenta within 3.0 cms from the cervical internal os were included in the study. These cases were  followed up at 4 weekly interval to repeated serial  transvaginal USG well through 3rd trimester of pregnancy or delivery which ever was earlier.

Result: Of the total 1000 second trimester USG, 270 (25.3%) women

had low lying placenta in the second trimester. Follow up of this 270 cases indicated that in 250 (92.5%) cases it had migrated to upper segment by 3rd trimester. The migration of placenta was 95.2% and 69.0 % where the

distance between the leading edge of placenta and cervical internal os was more than 2.0 cm or less than 2 cm respectively. Migration was not observed in women where the distance was less than 1.5 cm. Placental migration was 95.8% in anteriorly situated placenta and 91.3 % in posteriorly situated placenta. The rate of placental migration was 96%, 71.4%, 50% in women who had previous normal delivery, previous caesarean delivery and prior history of dilatation and curettage (D & C) or manual removal of placenta (MRP), respectively.

Conclusion: The prevalence of low lying placenta in 2nd trimester is 27%, which reduces to 7.4% at term. The rate of placental migration was over 90.0 %. Factor like initial distance between the lower edge of the placental and cervical

internal os. placental position and previous birth by caesarean section infl uence the placental migration.

Keywords :

Article: Download PDF   DOI : 10.36106/ijsr  

Cite This Article:

Aditya Prakash Misra, Ritu Mishra, Prediction of migration of low lying placenta in mid trimester Ultrasound, INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH : VOLUME-6 | ISSUE-2 | FEBRUARY-2017


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