Early dating ultrasound

11-Nov-2014 13:47 by 7 Comments

Early dating ultrasound - popular chinese dating show

Sometimes a trans-vaginal examination shows that your pregnancy is less advanced than expected.

The most accurate time is between 8 and 11 weeks gestation.

This is because the fetus is growing so quickly that there is a big difference in size from week to week.

Also the fetus cannot bend and twist too much yet, so the length of the body is fairly constant.

However, the accuracy of the ultrasound examination is always dependent on the skill of the sonographer and the quality of the equipment.

Most dating scans are done with a trans-abdominal transducer and a fullish bladder.

If the pregnancy is very early the gestation sac and fetus will not be big enough to see, so the transvaginal approach will give better pictures.

For transvaginal ultrasound you can have an empty bladder Dating scans are usually recommended if there is doubt about the validity of the last menstrual period.

For example if you a tiny sac can be seen in the uterus, but the baby and its heart beat may not be detected yet.

5 ½ weeks gestation means 5 ½ weeks from the first day of the last menstrual period, which is usually about 3 ½ weeks from the date of conception (confusing, isn’t it!

) the fetus is clearly seen on trans-vaginal ultrasound and the heart beat can be seen at this early stage (90 to 110 beats per minute under 6 to 7 weeks, then 110 to 200 beats per minute as the baby matures).

the baby and its heart beat can be detected relatively easily with trans-abdominal and trans-vaginal examination.

This is presuming that the pregnancy is actually at this stage of development.

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