Research on Prevention, Early Detection, and Clinical Evaluation of Intracranial Hemorrhage in Preterm Infants

Exclusion Criteria

• •Excluding secondary IVH, including but not limited to congenital malformations, vitamin K1 deficiency, abnormal coagulation function, etc.
• •Excluding hydrocephalus caused by other reasons, including but not limited to infection, congenital malformations, intracranial space-occupying lesions, etc.
• •Treatment before diagnosis of hydrocephalus after intraventricular hemorrhage or suspected presence of central nervous system infection.