Hi, My son is a new born baby who had Right ventricle hypertrophy with mosaic pattern with mid cavitatory RV gradient (40mmhg) suggestive of Double chamber right ventricle. I had some research over internet and experts says this will disappear in 8-10 weeks some says unknown and rare disease. I don't know what to do. I need the right suggestion. Please let me know what is the symptoms, cause and remediation. I had done the 2D echo cardiograph.