Get your Health question answered in 3 easy steps
A Doctor will be with you shortly
Ask a Doctor Now
184 Doctors are Online

What is the current measurement of 149mm at 20 weeks on the percentile chart?

DOCTOR OF THE MONTH - Nov 2013
Nov 2013
User rating for this question
Very Good
Answered by

Neurologist
Practicing since : 1994
Answered : 5356 Questions
Question
hi, The head circumference of my baby was at 148mm at 19 weeks and now 149 at 20.

so my questions are:
1. what is the current measurement of 149mm at 20 weeks on the percentile chart.
2. why would the head size drop that much in one week?

many thanks
Posted Sun, 28 Oct 2012 in Growth and Development in Children
 
 
Answered by Dr. Sudhir Kumar 2 hours later
Hi,
Thank you for contacting Healthcare magic.
I need a few clarifications-
1. Did you mean 148 mm? As it looks too low to be true.
2. I require baby's sex, as the normative data slightly differ between boys and girls.
3. If you can provide weight and length of the baby, it would be better.
Best wishes,
Dr Sudhir Kumar MD DM
Above answer was peer-reviewed by
 
Follow-up: What is the current measurement of 149mm at 20 weeks on the percentile chart? 6 minutes later
Hi, sorry it is an unborn baby. At my 20 wk scan the head was 149mm. However a week before it was at 148. Im just concerned of how it could have dropped in percentile within a week. Also wanted to know what measurement on the percentile chart it ia correctly at.
Thanks
 
 
Answered by Dr. Sudhir Kumar 34 minutes later
Hi,
Thank you for your clarifications.
First of all, let me reassure you that your baby is totally normal, and there is no need to worry at present.
Both the measurements fall in the 95th percentile, for the age that you have mentioned.
If other things are ok, there is no cause for concern.
This is the time, when quickening occurs in women with first pregnancy. This refers to the ability to perceive the movements of baby. Make sure they are fine.
From your side, make sure you are gaining weight adequately.
Also your BP, blood sugar and thyroid tests should be normal.
I hope it helps. Please get back if you have any more queries.
Best wishes,
Dr Sudhir Kumar MD DM
Above answer was peer-reviewed by
 
Follow-up: What is the current measurement of 149mm at 20 weeks on the percentile chart? 7 minutes later
Hi. I was told that the head measurement are small and fall between 2 and 3sd. One sonographer mentioned the baby measures at 18 weeks gestation whilst i am at 20. I thought that falling in this range indicates a congenital disorder. Is that true? If so is there a chance the baby will still grow
 
 
Answered by Dr. Sudhir Kumar 40 minutes later
Hi,

Thank you for your clarification, yeah it is just below average range of head circumference at this gestational age. If all other parameters are within normal range and inside the brain if everything is alright then no need to worry at present.You require follow up scans at 22 or 24weeks and see how it grows further. Ultrasound parameters are operator dependent, so small variations can occur. But if it is low on follow up scans also then need to consult your local gynaecologist.

Best wishes,

Dr. XXXXXXX Sudhir( radiologist) & Dr. Sudhir XXXXXXX
Above answer was peer-reviewed by
 
Share on Facebook
Share on Twitter
Share on Google+
Question is related to
Diseases and Conditions

The user accepted the expert's answer

Ask a Pediatrician

© Ebix, Inc. All Rights Reserved.
All the information, content and live chat provided on the site is intended to be for informational purposes only, and not a substitute for professional or medical advice. You should always speak with your doctor before you follow anything that you read on this website. Any health question asked on this site will be visible to the people who browse this site. Hence, the user assumes the responsibility not to divulge any personally identifiable information in the question. Use of this site is subject to our Terms & Conditions
Already Rated.
Your rating:

Ask a Doctor