Biomaterial Database

Pulsed Doppler sonographic measurement of normal values for the flow velocities in the intracranial arteries of healthy newborns. 1989

K H Deeg, and T Rupprecht

Department of Ultrasound, University of Erlangen-Nürnberg, FRG.

121 healthy premature born infants and full term newborns (corrected gestational age 29 to 45 weeks, weight at investigation 1070 to 3750 g) were investigated by pulsed Doppler sonography with a 5 MHz transducer. In all infants pulsed Doppler recordings were obtained from the internal carotid arteries (ICA), the basilar artery (BA) and both anterior cerebral arteries (ACA). From the flow profile the maximal systolic velocity (Vs), the endsystolic velocity (Ves) and the enddiastolic velocity (Ved), the time average velocity (TAV) and the time average maximal velocity (TAMX) as well as the resistance-index (RI) and the pulsatility-index (PI) were measured. For all parameters the relationship to the gestational age was analysed and normal values were established. There was a linear increase of all flow velocities with increasing gestational age. Vs in the ICA was about 20% higher than in the ACA and BA whereas Ves and Ved were not significantly different in the three arteries. The TAV in the ICA was 9% higher than in the ACA and 15% higher than in the BA. The TAMX in the ICA was 10% higher than in the ACA and 14% higher than in the BA. In contrast to the increase of the flow velocities neither the RI nor the PI showed a significant age dependency. For the RI in the ICA 0.77 +/- 0.08, in the ACA 0.73 +/- 0.08 and in the BA 0.72 +/- 0.09 were measured. The PI in the ICA was 3.0 +/- 0.08, in the ACA 2.7 +/- 0.09 and in the BA 2.7 +/- 0.7.(ABSTRACT TRUNCATED AT 250 WORDS)

UI	MeSH Term	Description	Entries
D007231	Infant, Newborn	An infant during the first 28 days after birth.	Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D007234	Infant, Premature	A human infant born before 37 weeks of GESTATION.	Neonatal Prematurity,Premature Infants,Preterm Infants,Infant, Preterm,Infants, Premature,Infants, Preterm,Premature Infant,Prematurity, Neonatal,Preterm Infant
D008297	Male		Males
D011673	Pulsatile Flow	Rhythmic, intermittent propagation of a fluid through a BLOOD VESSEL or piping system, in contrast to constant, smooth propagation, which produces laminar flow.	Flow, Pulsating,Perfusion, Pulsatile,Flow, Pulsatile,Flows, Pulsatile,Flows, Pulsating,Perfusions, Pulsatile,Pulsatile Flows,Pulsatile Perfusion,Pulsatile Perfusions,Pulsating Flow,Pulsating Flows
D012016	Reference Values	The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality.	Normal Range,Normal Values,Reference Ranges,Normal Ranges,Normal Value,Range, Normal,Range, Reference,Ranges, Normal,Ranges, Reference,Reference Range,Reference Value,Value, Normal,Value, Reference,Values, Normal,Values, Reference
D001783	Blood Flow Velocity	A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.	Blood Flow Velocities,Flow Velocities, Blood,Flow Velocity, Blood,Velocities, Blood Flow,Velocity, Blood Flow
D002536	Cerebral Arteries	The arterial blood vessels supplying the CEREBRUM.	Arteries, Cerebral,Artery, Cerebral,Cerebral Artery
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014463	Ultrasonography	The visualization of deep structures of the body by recording the reflections or echoes of ultrasonic pulses directed into the tissues. Use of ultrasound for imaging or diagnostic purposes employs frequencies ranging from 1.6 to 10 megahertz.	Echography,Echotomography,Echotomography, Computer,Sonography, Medical,Tomography, Ultrasonic,Ultrasonic Diagnosis,Ultrasonic Imaging,Ultrasonographic Imaging,Computer Echotomography,Diagnosis, Ultrasonic,Diagnostic Ultrasound,Ultrasonic Tomography,Ultrasound Imaging,Diagnoses, Ultrasonic,Diagnostic Ultrasounds,Imaging, Ultrasonic,Imaging, Ultrasonographic,Imaging, Ultrasound,Imagings, Ultrasonographic,Imagings, Ultrasound,Medical Sonography,Ultrasonic Diagnoses,Ultrasonographic Imagings,Ultrasound, Diagnostic,Ultrasounds, Diagnostic