<prompt> Eisenmengers syndrome--True are all except:Pulmonary veins are not distendedRV and LV walls come back to normal sizeDilatation of central pulmonary arteryPeripheral pruning of pulmonary arteries  <response>: b. RV and LV walls come back to normal sizeRef: Nelsons 20e p 2242, Ghai 8e p 428In Eisenmenger syndrome, irreversible pulmonary vascular obstructive changes occur;There is mainly pulmonary arterial hypertension, so pulmonary veins are not distendedBecause of pulmonary hypertension, right ventricular hypertrophy occursChest X Ray shows that pulmonary vessels are enlarged in the hilar areas and taper rapidly in caliber in the peripheral branches peripheral pruning. 