How to calculate age of fetus after positive pregnancy test? - Dr. Teena S Thomas
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8 سال پیش
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After getting positive pregnancy test
After getting positive pregnancy test the age of the foetus is usually calculated by determining the first day of the last period date, so the calculation start from the first day of the last period date in the number of week, usually the pregnancy last for 40 weeks. So from the last period we calculate the age of the features but this gets accurate only when the person is having a regular period, when the periods are irregular be there is less significance to the last period date, the first day of the last period usually is not very significant because the egg is released two weeks before you miss your period. So we add on two weeks to that, so if a person is having regular period that is every 28 days cycle then usually egg is released in 14 day, so 14 day behind and 14 day ahead. So that counts to 4 weeks. But the period of women is around 45 days the egg is released usually 31st day, so we don't have to calculate the first 31 days before that, so it will be the 31st day from there are two weeks more. So than the calculation varies. So for a normally regular cycle women the calculation is started from the first day of the last period and then all these days can be corroborated and we do an early pregnancy scan, usually the early pregnancy scan is a dating scan. So we can get an accurate reading by going through the first day of the last period date and the early pregnancy scan.
8 سال پیش
در تاریخ 1395/02/29 منتشر شده
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