| Noninvasive diagnosis of neonatal asphyxia and intraventricular hemorrhage by Doppler ultrasound. | |
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MedLine Citation:
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PMID: 490249 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The cerebrovascular hemodynamic alterations in asphyxia and intracerebral-intraventricular hemorrhage were determined by monitoring the pulsatile flow changes in the anterior cerebral arteries using Doppler ultrasound. The pulsatility index measurements, which were calculated from the recorded changes in Doppler frequency shifts, were obtained in four groups of newborn infants with the following diagnoses: Group I--normal term (n=21); Group II--asphyxia (n=12); Group III--IC-IVH (n=14); and Group IV--asymptomatic preterm (n=11). There was no significant difference between PI values of Groups I and IV. Compared to normal term infants, those diagnosed as having asphyxia had significantly lower PI measurements and those with IC-IVH had significantly higher PI values than the asymptomatic pretern infants. Serial Doppler studies were also performed in 22 preterm infants with respiratory distress. One-half of these infants subsequently developed IC-IVH. Prior to hemorrhage, their PI measurements were significantly lower than those who did not eventually have the complication. The low PI values in asphyxia and prior to the onset of IC-IVH indicate vasodilation and decreased resistance to blood flow. In IC-IVH, the high PI measurements denote the opposite. In infants with respiratory distress in the presence of significant vasodilation and lowered vascular resistance, CBF may increase to excessive levels, resulting in IC-IVH. |
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Authors:
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H S Bada; W Hajjar; C Chua; D S Sumner |
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Publication Detail:
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Type: Case Reports; Journal Article |
Journal Detail:
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Title: The Journal of pediatrics Volume: 95 ISSN: 0022-3476 ISO Abbreviation: J. Pediatr. Publication Date: 1979 Nov |
Date Detail:
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Created Date: 1979-12-27 Completed Date: 1979-12-27 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0375410 Medline TA: J Pediatr Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 775-9 Citation Subset: AIM; IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Asphyxia Neonatorum
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diagnosis* Blood Flow Velocity Cerebral Arteries Cerebral Hemorrhage / diagnosis* Cerebral Ventricles* Cerebrovascular Circulation Doppler Effect Humans Infant, Newborn Infant, Newborn, Diseases / diagnosis* Infant, Premature, Diseases / diagnosis Male Methods Ultrasonography* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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