Prenatal examination process?? Who knows what is checked

Patient's question:

No

Doctor's answer:

Prenatal examinations generally require women to visit the hospital promptly after their menstrual period to confirm whether the pregnancy is intrauterine and determine the gestational age, as well as to schedule the next prenatal checkup. Between weeks 10 and 13, it is necessary to establish a medical record and consult for initial screening of high-risk cases. Ultrasound examinations should not be excessive; generally, 2 to 3 sessions are appropriate. The first ultrasound is performed around weeks 14 to 16, focusing on preliminary exclusion of abnormalities and Down syndrome. The second ultrasound is conducted later in pregnancy (around week 28) to assess fetal growth and development, amniotic fluid status, and placental abnormalities. The third ultrasound is performed before delivery to evaluate fetal size, placenta, umbilical cord, and amniotic fluid conditions. Color Doppler ultrasound is particularly important for delivery. For special cases, additional ultrasound examinations may be required.
In addition to this, the specific schedule for other routine prenatal checkups is as follows: At least one checkup before the fifth month of pregnancy, every four weeks between weeks 20 and 28, every two weeks between weeks 28 and 36, and weekly after week 36 until delivery. If any abnormalities are detected during the process, the frequency of checkups or additional examination methods should be adjusted accordingly.