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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Der Internist 40 (1999), S. 764-771 
    ISSN: 1432-1289
    Keywords: Schlüsselwörter Cor pulmonale ; chirurgische Therapie ; pulmonale Hypertension ; Therapie ; Thrombendarterektomie ; Lungenembolie ; Therapie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zum Thema Chirurgische Maßnahmen stellen die ultima ratio in der Behandlung der Cor pulmonale in fortgeschrittenem Stadium dar: beidseitige Lungentransplantation, kombinierte Herz- und Lungentransplantation sowie pulmonale Thrombendarterektomie. Die Transplantation thorakaler Organe kommt seit Beginn der 80er Jahre mit immer besseren Ergebnissen zum Einsatz, was wesentlich auf die Anwendung von Cyclosporin als Immunsuppressivum zurückzuführen ist. In dieser Übersicht wird im Hinblick auf die verschiedenen Operationsverfahren über die Indikationen, die nicht wenigen Kontraindikationen, die jeweils notwendige Diagnostik, die operativen Techniken und die Langzeitergebnisse berichtet. Werden vor allem die Kontraindikationen sorgfältig beachtet und wird nur ein selektiertes Krankengut operiert, dann darf man erwarten, daß durch ständig verbesserte Operationsverfahren und Immunsuppression die operative Therapie der pulmonalen Hypertension und des Cor pulmonale eine große Zukunft hat. Hoffentlich wird auch hier kein Engpaß bestehen, wenn wie bei anderen Organtransplantationen nicht genügend Spenderorgane zur Verfügung stehen.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0762
    Keywords: Falco sparverius ; Hatching asynchrony Food supply ; Brood reduction ; American kestrel nestling growth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Food supply and hatching asynchrony were manipulated for 90 broods of American kestrels (Falco sparverius) during 1989–1991. We measured the growth and mortality of nestlings within four treatment groups (asynchronous, synchronous, food-supplemented, unsupplemented) to test the brood reduction hypothesis of Lack (1947, 1954). Fledging success did not differ between synchronous and asynchronous broods when food was poor but consistent with the brood reduction hypothesis, nestlings died at a younger age in asynchronous broods. When food was supplemented, mortality did not occur in the synchronous broods but youngest nestlings still died in asynchronous nests despite apparently adequate food for the brood. Oldest nestlings in asynchronous broods fledged with a greater mass than their younger siblings, also consistent with Lack's hypothesis. Average nestling quality in synchronous broods was very dependent on food levels. Synchronous young that were supplemented were, on average, the heaviest of any treatment group but young from unsupplemented synchronous broods were the lightest. Overall, patterns of mortality and growth for kestrels support the brood reduction hypothesis when food is limited, but not when it is abundant. This food-dependent benefit of asynchrony in the nestling period is a prerequisite for facultatively adjusted hatching spans during laying.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0762
    Keywords: Key wordsFalco sparverius ; Hatching asynchrony Food supply ; Brood reduction ; American kestrel nestling growth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Food supply and hatching asynchrony were manipulated for 90 broods of American kestrels (Falco sparverius) during 1989–1991. We measured the growth and mortality of nestlings within four treatment groups (asynchronous, synchronous, food-supplemented, unsupplemented) to test the brood reduction hypothesis of Lack (1947, 1954). Fledging success did not differ between synchronous and asynchronous broods when food was poor but consistent with the brood reduction hypothesis, nestlings died at a younger age in asynchronous broods. When food was supplemented, mortality did not occur in the synchronous broods but youngest nestlings still died in asynchronous nests despite apparently adequate food for the brood. Oldest nestlings in asynchronous broods fledged with a greater mass than their younger siblings, also consistent with Lack’s hypothesis. Average nestling quality in synchronous broods was very dependent on food levels. Synchronous young that were supplemented were, on average, the heaviest of any treatment group but young from unsupplemented synchronous broods were the lightest. Overall, patterns of mortality and growth for kestrels support the brood reduction hypothesis when food is limited, but not when it is abundant. This food-dependent benefit of asynchrony in the nestling period is a prerequisite for facultatively adjusted hatching spans during laying.
    Type of Medium: Electronic Resource
    Signatur Availability
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