Trans vaginal ultrasound with a partially full bladder will be done at gestational age earlier than 10 weeks to assess the site of intrauterine gestational sac to the endometrial cavity and the distance between the implantation site and the internal cervical os . Doppler assessment of the retrochorionic blood flow at the area behind the maximum chorionic tissue to detect resistance index.
Age range
20 Years – 40 Years
Sex
FEMALE
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Distance between the implantation site and the internal cervical os
Timeframe: 10 weeks to 40 weeks gestational age