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From the Departments of Obstetrics and Gynecology, Radiology, and Epidemiology, University of Ottawa, Canada.
The influence of placental site and parity on the date of quickening was studied in 112 gravidas. With placental site on the anterior uterine wall, quickening occurred at a mean gestational age of 19 weeks in primigravidas, and 17 weeks, five days in multiparas. With placental site on the posterior uterine wall, quickening occurred at a mean gestational age of 18 weeks in primigravidas, and 16 weeks, one day in multiparas. It is concluded that placental site influences quickening independent of parity and that it is a major factor in determining the stage at which fetal movements are first felt.
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