9 doctors weighed in:
Do I have to have an amnio if the ultrasound shows lots of findings of trisomy 18?
9 doctors weighed in

Dr. Pam Yoder
Obstetrics & Gynecology - Maternal Fetal Medicine
6 doctors agree
In brief: Diagnosis vs screen
Most maternal-fetal medicine or OB doctors.
Sonographers spend time looking at the heart and other structures for abnormalities that can be associated with chromosomal or other problems. Details they see change with fetal age and position. Because there might be structures they cannot see, ultrasound is considered a screening test. To diagnose trisomy requires amniotic fluid or baby blood studies.

In brief: Diagnosis vs screen
Most maternal-fetal medicine or OB doctors.
Sonographers spend time looking at the heart and other structures for abnormalities that can be associated with chromosomal or other problems. Details they see change with fetal age and position. Because there might be structures they cannot see, ultrasound is considered a screening test. To diagnose trisomy requires amniotic fluid or baby blood studies.
Dr. Pam Yoder
Dr. Pam Yoder
Thank
Dr. Andrew Ho
Psychiatry
1 doctor agrees
In brief: Decision making
The one and only purpose to undergo a screening or diagnostic test is to provide information that can help with making a decision.
If ultrasound results already provide enough information for you to make a decision, it does not make sense to do amnio.

In brief: Decision making
The one and only purpose to undergo a screening or diagnostic test is to provide information that can help with making a decision.
If ultrasound results already provide enough information for you to make a decision, it does not make sense to do amnio.
Dr. Andrew Ho
Dr. Andrew Ho
Thank
Dr. James Ferguson
Pediatrics
In brief: Depends
If the findings would determine whether the involved mother will choose to terminate or not, the reliability of the test matters.
If the mom would accept a child with normal chromosomes but some identified problems, some form of definitive chromosome study is needed.Whether this is an amnio or a NIPP study is a matter of personal choice.

In brief: Depends
If the findings would determine whether the involved mother will choose to terminate or not, the reliability of the test matters.
If the mom would accept a child with normal chromosomes but some identified problems, some form of definitive chromosome study is needed.Whether this is an amnio or a NIPP study is a matter of personal choice.
Dr. James Ferguson
Dr. James Ferguson
Thank
Get help from a real doctor now
Dr. Shontae Buffington
Board Certified, Pediatrics
13 years in practice
833K people helped
Continue
107,000 doctors available
Read more answers from doctors