extremely preterm, very preterm
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: ? Preterm infants with gestational age < 32 weeks and umbilical artery catheterization; ? The age of inclusion is within 12 hours after birth; ? Informed consent of the legal guardian.
Exclusion criteria
Exclusion criteria: ? There are any of the following conditions: convulsion or severe intracranial hemorrhage (grade III or above), suppurative meningitis, congenital cerebrovascular dysplasia, congenital hydrocephalus; ? Legal guardian does not agree to participate in this study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Cerebral blood flow(including PSV, EDV,MV);Percutaneous blood gas analysis; | — |
Secondary
| Measure | Time frame |
|---|---|
| Arterial blood pressure; | — |
Countries
China
Contacts
Chengdu Women and Children's Central Hospital