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  • 1980-1984  (2)
  • Cardiac output  (1)
  • Complex cyanotic heart disease  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 59 (1981), S. 1115-1120 
    ISSN: 1432-1440
    Keywords: Cardiac output ; Non-invasive ; Echocardiography ; Dye dilution ; Herzminutenvolumen ; nicht-invasiv ; Echocardiographie ; Farbstoffverdünnungstechnik
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Einer nicht invasiven Methode zur akkuraten Bestimmung des Herzminutenvolumens (HMV) käme eine große Bedeutung zu. Wir verglichen deshalb aus links-ventriculären Echocardiogrammen bestimmte mit gleichzeitig mittels Farbstoffverdünnungsmethode (Cardiogreen) bestimmten HMV in 10 normalen Versuchspersonen. Unter Ruhebedingungen war das HMV mit beiden Methoden reproduzierbar und nicht signifikant verschieden. Anstiege des HMV nach intravenöser Infusion von Isoproterenol (15 ng/kg/min über 4 min) wurden mittels Echocardiographie zuverlässig nur bei Probanden erfaßt, bei denen das Schlagvolumen weniger als 40% anstieg. Bei größeren Anstiegen wurde der Anstieg des HMV signifikant unterschätzt. Ein erniedrigtes HMV nach intravenöser Injektion von Propranolol (0,2 mg/kg) wurde von beiden Methoden gleichermaßen erfaßt. Obwohl das HMV mittels Echocardiographie für das Untersuchungskollektiv nicht signifikant von den Farbstoffverdünnungswerten verschieden war, wichen die echocardiographisch bestimmten HMV bei einzelnen Probanden deutlich von den Farbstoffverdünnungswerten ab. Unsere Ergebnisse zeigen, daß die links-ventriculäre Echocardiographie zur Bestimmung des HMV in Gruppen und bei Änderungen des Schlagvolumens von weniger als 40% benutzt werden kann.
    Notes: Summary Because of the potential benefits from a noninvasive technique in assessing cardiac output, we compared cardiac output estimates from left ventricular echocardiograms with results obtained simultaneously by a standard technique, dye dilution in 10 healthy normal volunteers. During rest, cardiac outputs by echocardiographic and dye dilution techniques were reproducible and not significantly different. Increases in cardiac output produced by intravenous infusion of isoproterenol (15 ng/kg/min for 4 min) were accurately estimated by echocardiography in subjects whose stroke volume increased less than 40%, but were significantly underestimated when stroke volume increased more than 40%. Decreased cardiac output produced by intravenous propranolol (0.2 mg/kg) was comparable by both methods. Although echocardiography accurately estimated mean cardiac output for the group it over- or underestimated cardiac output in individual subjects. We propose that echocardiography can reliably estimate cardiac output in groups at rest and when stroke volume changes less than 40%.
    Type of Medium: Electronic Resource
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  • 2
    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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