Before revision: These include intraventricular haemorrhage (IVH), which often occurs during the first few days, and periventricular leukomalacia (PVL), which tends to occur later on.
After revision: These include intraventricular hemorrhage (IVH), which often occurs during the first few days, and periventricular leukomalacia (PVL), which tends to occur later on.