Post hemorrhagic ventricular dilation (PHVD) can occur in 20-30% of preterm babies born before 34 weeks gestation who develop intraventricular hemorrhage (IVH). PHVD is defined as ventricular enlargement exceeding the 97th percentile for gestational age. Management involves monitoring ventricular size and head growth rate, with interventions like serial lumbar punctures or ventricular drainage if there is rapid progression. The goals of treatment are to reduce intracranial pressure and prevent the need for permanent shunting while avoiding complications. Outcomes depend on the severity of the initial IVH and presence of parenchymal brain injuries.