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    Cerebral tissue oxygenation index and superior vena cava blood flow in the very low birth weight infant.

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    Authors
    Moran, M
    Miletin, J
    Pichova, K
    Dempsey, E M
    Affiliation
    Department of Pediatrics and Newborn Medicine, Coombe Women and Infants, University Hospital, Dublin 8, Ireland.
    Issue Date
    2012-02-01T10:57:28Z
    MeSH
    Brain/*blood supply
    Cerebral Ventricles/blood supply
    *Cerebrovascular Circulation
    Female
    Hemodynamics
    Humans
    Infant, Newborn
    *Infant, Very Low Birth Weight
    Male
    Oxygen/*blood
    Prospective Studies
    Regional Blood Flow
    Risk Factors
    Spectroscopy, Near-Infrared
    *Vena Cava, Superior
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    Citation
    Acta Paediatr. 2009 Jan;98(1):43-6. Epub 2008 Oct 6.
    Journal
    Acta paediatrica (Oslo, Norway : 1992)
    URI
    http://hdl.handle.net/10147/208006
    DOI
    10.1111/j.1651-2227.2008.01006.x
    PubMed ID
    18945276
    Abstract
    BACKGROUND: Superior vena cava (SVC) flow assesses blood flow from the upper body, including the brain. Near infrared spectroscopy (NIRS) provides information on brain perfusion and oxygenation. AIM: To assess the relationship between cerebral tissue oxygenation index (cTOI) and cardiac output measures in the very low birth weight (VLBW) infant in the first day of life. METHODS: A prospective observational cohort study. Neonates with birth weight less than 1500 g (VLBW) were eligible for enrollment. Newborns with congenital heart disease, major congenital malformations and greater than Papile grade1 Intraventricular Haemorrhage on day 1 of life were excluded. Echocardiographic evaluation of SVC flow was performed in the first 24 h of life. Low SVC flow states were defined as a flow less than 40 mL/kg/min. cTOI was measured using NIRO 200 Hamamatsu. RESULTS: Twenty-seven VLBW neonates had both echocardiography and NIRS performed. The median (range) gestation was 29/40 (25 + 3 to 31 + 5 weeks) and median birth weight was 1.2 kg (0.57-1.48 kg). The mean (SD) TOI was 68.1 (7.9)%. The mean (SD) SVC flow was 70.36(39.5) mLs/kg/min. The correlation coefficient of cerebral tissue oxygenation and SVC flow was r = 0.53, p-value 0.005. There was a poor correlation between right and left ventricular output and cTOI which is not surprising considering the influence of intra- and extracardiac shunts. CONCLUSION: There is a positive relationship between cerebral TOI values and SVC flow in the very low birth infant on day one of life.
    Language
    eng
    ISSN
    1651-2227 (Electronic)
    0803-5253 (Linking)
    ae974a485f413a2113503eed53cd6c53
    10.1111/j.1651-2227.2008.01006.x
    Scopus Count
    Collections
    Coombe Women & Infants University Hospital

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