<s>[INST] my name is jj. im 33yrs old and 21 weeks pregnant. i went for an echo two weeks ago and the doctor called me back for a second look at my baby s heart yesterday. she thinks my baby s right ventricle is a little smaller than normal. i want to know all abt it. [/INST] Hi..there is a condition called hypoplastic right heart syndrome where in the right side of the heart will be smaller. One echocardiogram doesn't confirm or refute anything. I think you need to be on regular follow up as suggested by your doctor and then take necessary steps.I suggest you ask the doctor if she's suspecting the same condition. Then it will be prudent to discuss about this with her.Regards - Dr. Sumanth </s>