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What is Embryonic structure, identified earliest on USG, for confirmation of pregnancy is: March 2011, March 2013 and explain in detail?
Ans. C: Gestation sac Gestation sac and embryonic yolk sac is identified at menstrual age of 5 weeks Fetal pole and cardiac activity is identified on USG at menstrual age of 6 weeks Lower limb buds, upper limb buds and spine at 7, 8 and 9 weeks respectively Remember: Total duration of pregnancy: 280 days Earliest detection of pregnancy by USG: Gestational sac Pregnancy is confirmed by: - Fetal hea rate - Fetal sac on USG - Fetal movements Transvaginal sonography detects gestational sac: at 14 days after ovulation