Perinatal Outcome in Twin Pregnancy According to Chorionicity

Abstract

Background: Multiple pregnancy is defined as pregnancy with 2 or more fetuses. It is termed as twins for 2 fetuses, triplets for 3 fetuses, Quadruplets for 4 fetuses, Quintuplets for 5 fetuses, Sextuplets for 6 fetuses and Septuplets for 7 fetuses and so on. The incidence of multiple pregnancies varies significantly. In several overview studies (since the early 1970) it was found that natural twinning rates were less than 8 twin births per 1000 births in East Asia and Oceania, 9-16 per 1000 births in Europe, USA and India and 17 and more per 1000 births in African countries. Methods: This prospective observational study was conducted by the department of OBG at Sri muthukumaran medical college hospital and research institute, Shikkarayapuram, Chennai from December 2019 to May 2020. Results: Primigravidas constituted for 43% of pregnancies and multigravidas constituted for 57% of pregnancies. The maximum cases 42 (42%) were in the age of 25-29 yrs followed by 31(31%) in the age group 21-24 years. The mean age of the patients was 26.87 (SD 9.67) years. The discordant growth constituted for 12% of pregnancies in both monochorionic and dichorionic twins where as it was absent in 88% of cases.