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  • 1980-1984  (1)
  • 1925-1929
  • Left-to-right intracardiac shunts  (1)
  • 1
    ISSN: 1432-1971
    Schlagwort(e): Technetium angiocardiography ; Left-to-right intracardiac shunts
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Pulmonary to systemic flow ratios (Qp/Qs) were estimated by quantitative radionuclide angiocardiography (QRAC) in 135 children. The Qp/Qs ratios were derived from pulmonary time/activity curves using a gamma variate model. Eighty-five of these children also had Qp/Qs ratios estimated by oximetry at cardiac catheterization. Left-to-right shunts with a Qp/Qs range of 1.2 to 3.0 were detected and quantitated by radionuclide angiography with an accuracy similar to that for oximetry. The correlation between Qp/Qs, determined by QRAC and by oximetry was good (r=.93; SEE .31). This relatively noninvasive technique has now been used to estimate the Qp/Qs ratio in 34 children with a clinically suspected left-to-right shunt, and postoperatively in 16 cases with residual murmurs; it has obviated the need for catheterization in many of these patients. The technique may also be used serially to determine changes in the Qp/Qs ratio in patients with known left-to-right shunts.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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