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  • 1980-1984  (2)
  • 1982  (2)
  • Community matrix  (1)
  • Complex cyanotic heart disease  (1)
  • Acquisition
  • 1
    ISSN: 1432-1971
    Keywords: Dextrocardia ; Polysplenia ; Complex cyanotic heart disease ; Surgery ; Intra-atrial baffle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The clinical, angiocardiographic, and surgical findings in a cyanotic child with dextrocardia, L-loop, laterally inverted but otherwise normally related great arteries, and situs ambiguus are described and compared with other similar cases. Electrocardiographic, echocardiographic, and angiographic data are reviewed, and thesegmental approach to diagnosis is stressed. Both systemic and pulmonary veins returned to the right-sided atrium. Blood then passed either through the mitral valve to the morphologically left ventricle and to the aorta or through an atrial septal defect to a small left-sided atrium, right ventricle, and pulmonary artery. Total correction was undertaken with an intra-atrial baffle to direct pulmonary venous return to the morphologically right ventricle and systemic venous return to the right ventricle. The subpulmonic stenosis was alleviated with an outflow patch.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of mathematical biology 16 (1982), S. 25-31 
    ISSN: 1432-1416
    Keywords: Stability ; Community matrix ; Lotka-Volterra models
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract The explicit function of the community matrix of a three dimensional Lotka-Volterra model is delineated by a set of necessary and sufficient conditions for a positive equilibrium to be asymptotically stable. In the special case that the community matrix is quasi weakly diagonally dominant, it is shown that a positive determinant for the community matrix is not only necessary but is also sufficient for stability. The results are specific to three dimensional models and do not extend to communities of dimension greater than three.
    Type of Medium: Electronic Resource
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