Although several studies have contrasted the hemodynamics of cerebral arteries using cranial Doppler ultrasound between full-term and preterm infants, the assessments were mostly conducted in the first days of life. Furthermore, the clinically significant hemodynamic parameter has been established from a small sample of infants that its validity on other populations remains unclear. Therefore, the purpose of this study is twofold: 1. to examine the hemodynamics of cerebral arteries in full-term and very low birth weight preterm infants at term age 2. to assess the validity of the hemodynamic parameters in relation to concurrent neurobehavioral function. This study will enroll normal full-term infants and very low birth weight preterm infants who have no major neonatal disease. Cranial Doppler ultrasound examination will be performed on all infants at term age. Hemodynamic parameters will include peak systolic velocity, end diastolic velocity, resistance index and pulsatility index for the bilateral anterior cerebral arteries and middle cerebral arteries. Neurobehavioral development will be administered on the same day using the Neonatal Neurobehavioral Examination- Chinese version.
Age range
7 Days
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Cerebral blood flow velocity
Timeframe: post-conceptional age=40 weeks