Dating ultrasound 7 weeks
Transvaginal scans may be used early in pregnancy to diagnose potential ectopic or molar pregnancies.
There is not a recommended number of ultrasounds that should be performed during routine prenatal care.
Additional ultrasounds might be ordered separately if your healthcare provider suspects a complication or problem related to your pregnancy.
Ultrasounds are diagnostic procedures that detect or aid in the detection of abnormalities and conditions related to pregnancy.
However, variations in each woman’s cycle and each pregnancy may hinder the accuracy of the gestational age calculation.
If your healthcare provider uses an ultrasound to get an estimated delivery date to base the timing of your prenatal care, the original estimated gestational age will not be changed.
Ultrasounds are usually combined with other tests, such as triple tests, amniocentesis, or chorionic villus sampling, to validate a diagnosis.
An ultrasound exam may be performed throughout pregnancy for the following medically-necessary reasons: First Trimester: The ultrasound is a noninvasive procedure which, when used properly, has not demonstrated fetal harm.
It is recommended that ultrasound only be used if medically indicated. The heartbeat may not be detected for reasons that include: tipped uterus, larger abdomen, or inaccurate dating with last menstrual period.
Because ultrasound should only be used when medically indicated, many healthy pregnancies will not require an ultrasound.