Gestational dating ultrasound Teen sey chat

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The date of the first documented positive pregnancy test and the beta-human chorionic gonadotropin (b HCG) level may help ascertain the minimum gestational age.

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The date of feeling the first fetal movements (quickening) is far too unreliable to be useful.In normal pregnancies, the length of gestation is minimally affected by maternal characteristics.However, obese women are significantly more likely to go post-term.Not infrequently, practitioners are called upon to manage pregnancies resulting from in vitro fertilization or intrauterine insemination.The GA of pregnancies resulting from in vitro fertilization can be precisely calculated from the time of embryo replacement; however, conception may be delayed for a few days in pregnancies resulting from intrauterine insemination.

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