<prompt> Eisenmenger syndrome is characterized by all exceptReturn of left ventricle right ventricle to normal sizePulmonary veins not distendedPruning of peripheral pulmonary aeriesDilatation of central pulmonary aeries  <response>: In eisenmenger syndrome there will be concentric hyperophy of right ventricle Ref : Ghai essential of pediatrics, eighth edition, p.no:428 