Is It Normal If The Size Of The Fetus Does Not Match The Age Of The Uterus?
Hello doc, is it normal if the size of the fetus does not match the age of the week? I first went to the obstetrician on 11/01/2020 and at that time my obstetric age had entered 8 weeks 3 days (according to calculations from my hpht) and on 15/02/2020 I did the 2nd control with the doctor different, the results of the second ultrasound my fetus length is only 6.4 and the age of the fetus 12 weeks more days. If I use the calculation of weeks from the results of the first ultrasound, my fetus should have stepped on more than 13 weeks. In addition, my HPL at the second examination retreated 10 days from the results of the first examination. Is this normal? thank you
Thank you for the question.
Determining the estimated gestational age and estimated birthdays (HPL) can be done in various ways, namely:
By calculation based on HPHT (the first day of last menstruation) By measuring the height of the uterine fundus (the highest part of the uterus) By monitoring the condition of the fetus through ultrasound examination Of these three methods, which is considered the most accurate in determining gestational age and HPHL is the third, namely by monitoring the condition of the fetus through ultrasound examination. However, insignificant differences (no more than 2 weeks) from the results of the determination using other methods too often can still be considered a reasonable tolerance.
Therefore, if the results of your pregnancy calculation are based on an ultrasound examination and HPHT calculation is only around 1 week, you should not need to worry. Provided the doctor states that your pregnancy is normal, there is no special treatment that needs to be done in this regard. Indeed, at 12-13 weeks of gestation, the normal length of the fetus can range from 5.5 to 7.5 cm.
For more details, try to consult directly with your doctor or obstetrician who examined you.
I hope this helps.