What is ivh? How about pvm? How do babies get them?

Hemorrhage/softening. Ivh- intraventricular hemorrhage can be triggered by pressure shifts in the sensitive blood vessels of the brain that cause blood to leak into the ventricles (fluid spaces).Premi's experience various mechanical events of delivery, resuscitation&intensive care that may trigger the process. Pvm periventricular leukomalacia describes the softening of the brain mater around the ventricles after injury.