This form of measurements provides a way of determining the duration of pregnancy from the day of the last menstrual process. According to the concept of gestational age, the fetus requires at least 280 days or close to 42 weeks to fully develop in pregnancy. Depending on the time duration required for fetal development, the resulting pregnancy can be either premature or normal. If the gestational age is 37 weeks then the pregnancy is considered to be premature. Gestational age between 38 and 40 usually results in normal pregnancy.
Depending on the needs of the mother, gestational age can be determined either before or after child’s birth. Ultrasound scans may be taken to measure the head and thigh bone size of the baby to calculate this measurement.
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Fetal age is the measurement of the length of pregnancy from the time of conception. Women are more likely to conceive during the time of ovulation. Fertilisation must occur in the first 24 hours and therefore the signs of ovulation must be recorded accurately to correctly determine fetal age.
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