Q. What is reversed A wave in Doppler?

Answered by
Dr. Megha Tuli Gupta
and medically reviewed by iCliniq medical review team.
This is a premium question & answer published on Apr 04, 2016 and last reviewed on: Jan 08, 2020

Hi doctor,

I am pregnant with MCMA twins. We have been told that one twin has a reversed A wave. What possible outcomes can this have for the twin? Please explain. Thanks.



Welcome to

I went through your query and I totally understand your situation.

  • A reversed A wave in Doppler is associated with very high chance of trisomy in the baby. The genetic abnormalities associated with this maybe even fatal.
  • Since monochorionic monoamniotic twins (MCMA twin) are usually monozygotic that is they share the same genetic material and hence the other baby may also be affected.
  • I suggest you to get the other baby tested too. In case the results are normal for the other one, you could try going for selective fetal reduction procedure.
  • Through this way you could at least have one healthy baby. Hopefully everything turns out well for you. All the best.

For further doubts consult a fetal medicine specialist online -->

Was this answer helpful?


Same symptoms doesn’t mean you have the same problem. Consult a doctor now!

Related Questions:
Kindly explain the factors used to calculate the risk of trisomy 21.

.. gone through the query (attachment removed to protect patient identity). Many factors count for calculating risk. They are age, serum markers, family history, and nuchal translucency. An age-related risk is more after 35 years of age. As you are 3...   Read full

My baby has white spots on her teeth. Is there anything to be done?

.. seen the pictures (attachment removed to protect patient identity). The spots cannot be reversed. They form during fetal development inside the womb and first three months after birth. Any dietary deficiency for you or baby may cause or sometimes...   Read full

What can be done to treat continuous itching in a thyroid patient?

.. be due to dry skin (xerosis), eczema (dermatitis), psoriasis, scabies, liver disease, kidney failure, iron deficiency anemia, thyroid disease, lymphoma or medications. Please get comprehensive blood work done to rule out these causes. Please treat...   Read full

Also Read Answers From:

ideaComprehensive Medical Second Opinion.Submit your Case

Also Read

Monkeypox Virus - Symptoms, Diagnosis, Treatment, Complications, and Prevention
Monkeypox is a zoonotic viral disease. This virus got its name as it was first noticed in laboratory monkeys in the late...  Read more»
Tomato Fever - Causes, Symptoms, Diagnosis, Treatment, and Prevention
Tomato fever is an unidentified and fast-spreading type of viral infection seen in young children. Scroll down to know m...  Read more»
Histrionic Personality Disorder - Causes, Signs, Symptoms, Diagnosis and Treatment
Histrionic personality disorder causes variations in the thinking ability of a person. Read this article to know more.  Read more»

Ask your health query to a doctor online?

Ask a Fetal Medicine Specialist Now

* guaranteed answer within 4 hours.

Disclaimer: No content published on this website is intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek advice from your physician or other qualified healthcare providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website. Read our Editorial Process to know how we create content for health articles and queries.