Abstract
The moment-to-moment regulation of cardiac output makes the cardiovascular network a dynamic system. In seconds, performance may be altered radically to increase heart rate and stroke volume to meet the needs of the peripheral, metabolizing tissues. Although the magnitude of contractility may be controlled by fiber length, sympathetic stimulation can enhance inotropic state at any given level of end-diastolic volume or pressure. These regulatory mechanisms perform elegantly in the normal heart, but they are substantially impaired in the failing organ.
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Colucci, W. S., Alexander, R. W., Williams, G. EL, Rude, R. E., Holman, B. L., Konstam, M. A., Wynne, J., Mudge, G. H., Jr. and Braunwald, E. 1981. Decreased lymphocyte beta-adrenergic receptor density in patients with heart failure and tolerance to the beta-adrenergic agonist pirbuterol. N. Engl. J. Med, 305, 185–190.
Bristow, M. R., Ginsburg, R., Minobe, W., Dubocciotti, R. S., Sageman, W. S., Lurie, K., Billingham, M. E., Harrison, D. C. and Stinson, E. B. 1982. Decreased catecholamine sensitivity and p-adrenergic-receptor density in failing human hearts. N. Eng. J. Med. 307, 205–211.
Chang, H. Y., Kelin, R. M. and Kunos, G. 1982. Selective desensitization of cardiac beta-adrenoceptors by prolonged in vivo infusion of catecholamines in rats. J. Pharmacol. Exp. Ther. 221, 784–789.
Kenakin, T. P. and Ferris, R. M. 1983. Effects of in vivo β-adrenoceptor down-regulation on cardiac responses to prenalterol and pirbuterol. J. Cardiovas. Pharmacol. 5, 90–97.
Hayes, J. S. 1982. A simple technique for determining contractility, intraventricular pressure, and heart rate in the anesthetized guinea pig. J. Pharmacol. Meth. 8, 231–239.
Wagner, J. and Brodde, O. E. 1978. On the presence and distribution of a-adrenoceptors in the heart of various mammalian species. Naunyn-Schmiedeberg’s Arch. Pharmacol. 302, 239–254.
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© 1986 Matinus Nijhoff Publishing, Boston
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Hayes, J.S., Pollock, G.D., Fuller, R.W. (1986). In Vivo Cardiovascular Responses to Isoproterenol, Dopamine, and Tyramine Following Prolonged Infusion of Isoproterenol. In: Frederickson, R.C.A., Hendrie, H.C., Hingtgen, J.N., Aprison, M.H. (eds) Neuroregulation of Autonomic, Endocrine and Immune Systems. Topics in the Neurosciences, vol 2. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2315-0_26
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DOI: https://doi.org/10.1007/978-1-4613-2315-0_26
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