527625?1229492858
Yao Sun, MD, PhD  
Male
San Francisco, CA

Interests: Neonatology, Medical Informatics
University of California, San Francisco
(415) 353-1565
San Francisco, CA
My Posts
May 07, 2010 in the Neonatology Expert Forum - 1
I'm sorry for the extremely late reply. As your doctor may have already discussed with you, diabetes can have many effects on your developing baby. Some issues that might occur include growth problems (either too big or too small), abnormal development of the heart, abnormal development of the intestine, and limb and spinal problems (these last are mor...
May 06, 2010 in the Neonatology Expert Forum - 1
In the absence of other abnormalities, multicystic dysplastic kidney (MCDK) is not usually considered to be hereditary. There are some rare genetic syndromes that include MCDK as a feature, but this is less of a concern since the ultrasounds so far show no other anomalies. MCDK can occasionally be mistaken for other urinary obstructive problems such as ur...
May 04, 2010 in the Neonatology Expert Forum - 1
Sorry for the late reply. The data about past marijuana use and early pregnancy is not abundant. In general, the risk for birth defects is low. Continued use of marijuana through pregnancy has been linked with growth problems during pregnancy, and behavioral and learning problems in childhood. If you've really stopped, then the overall risk to a ...
May 04, 2010 in the Neonatology Expert Forum - 1
Although cystic hygroma is associated with Turner's Syndrome (having only a single X chromosome), the combination of the 3 problems you describe is not necessarily associated with Turner's. I am not familiar with a known genetic syndrome with the 3 findings you've described. Given the combination of ultrasound findings, your baby is at risk...
May 04, 2010 in the Neonatology Expert Forum - 1
I'm sorry for the late reply. The surgical and medical management varies a bit from institution to institution. In general, you can expect that a neonatal team (with team members that might include pediatricians, neonatologists, neonatal nurse practitioners, neonatal nurses, and respiratory therapists) will be present at the time your baby is born. Af...
May 04, 2010 in the Neonatology Expert Forum - 1
A normal amniocentesis is reassuring, but it does not uncover all genetic syndromes. The amniocentesis allows a "karyotype" test to be performed, which looks at the number and general configuration of the chromosomes (the "packaging" of all our genetic material, similar to a volume in an encyclopedia). It does not, however, test for prob...
May 04, 2010 in the Neonatology Expert Forum - 1
If you haven't already, you should discuss your concerns with the parents of your grandson, and have them bring them to the pediatrician. A truly swollen tongue (enlarging over time) is concerning for the possibility of an underlying metabolic problem. The pediatrician can do an evaluation to determine the probability of an underlying medical problem. ...
May 04, 2010 in the Neonatology Expert Forum - 1
I'm sorry for the late reply. A follow-up ultrasound at a reputable institution is the best way to determine the risk of skeletal dysplasia (the general class of skeletal problems that includes thanatophoric dwarfism). You may have already had this done by now. Based on a repeat ultrasound and possibly further ultrasounds, your Obstetrician can help...
May 04, 2010 in the Neonatology Expert Forum - 2
Feeding aversion is a complex problem where an infant does not like to take food through the mouth. There is a higher risk of developing feeding aversion if the infant has been ill for a long time or has not been fed through the mouth for a long time. There are many medical or surgical conditions where feeding through the mouth needs to be avoided for awhil...
May 04, 2010 in the Neonatology Expert Forum - 2
There is not a lot of data about the effects of Adderall on a developing fetus. Your Obstetrician can help you determine whether your baby is growing properly as the pregnancy continues.