VP shunt

My daughter was born at the age of 31 weeks she was 2 months pre mature.After the birth she had problem to breathe and was not injected surfactant, resulting in RDS she stayed in hospital for 3 weeks and was discharge on 23 of may 09. In june her head size was 32 cm which increased to 38 within 10 days.took her to neuro surgen suggested to get CT. After CT she was diagnosed with Aquaducteral Stenosis. Doctor recommended to insert Vp shunt medium pressure. operation was don on 29 of june 09. operation was success and we took her back home. After 2 weeks of surgery we found that head size is increasing again and it jumped from 38cm to 39 cm, Doctor suggested to take her MRI which confirmed that Ventricles are still dilated and the size are LT 2.5 cm RT 2.1 cm  3rd 1.5 cm. Doctor discussed with us and said that we have to replace the medium pressure shunt to low pressure shunt cause pressure is too low. on 19th august 09 2nd surgery was done with low pressure burr hole medtronic shunt.  Now after almost 16 days of surgery we fount that fontanal is not that much depressed as it was 4 days back we took her back to Doctor where he suggested us to get a cranial ultrasound . in that ultrasound radiologist has reported as follows:
(unilateral enlargment of lateral ventrical RT side 11mm LT frontal shouls tip of vp shunt 3rd ventrical is 09mm 4rth ventrical is not enlarged. midline shift is seen on LT side in frontal area  no bleed or mass seen , plexsus appears normal  vp shunt seen crossing in to the left side
Conclusion:unilateral hydrocephalus
aquaduct stenosis

We discussed with doctor he said that after 4 weeks visit again
I am not satisfied with his answer i feel like fontenal is blogy baby is sleeping most of the time very rare she wakes up for feed. intake is a about 3 ounce every four hours.

My question is that left ventricle is empty and right is still dilated is this safe or is there any thing to worry
What we have to do now

[Yao Sun, MD, PhD]

I am not qualified to answer any questions in the scenario you have described.  If you truly want a 2nd opinion, you should discuss that with your daughter's neurosurgeon.