How is neonatal intraventricular hemorrhage classified?
- Grade I: Localized subependymal hemorrhage into the germinal matrix
- Grade II: Subependymal hemorrhage with extension into the ventricles (less than 50% of the ventricular volume filled with blood)
- Grade III: Subependymal hemorrhage with extension into the ventricles and acute ventricular dilatation (greater than 50% of the ventricular volume filled with blood)
- Grade IV (now referred to as a periventricular hemorrhagic infarction ): Subependymal, intraventricular, and extension into the surrounding cerebral parenchyma
