Hemodynamic effects of catecholamine stimulation in constrictive pericarditis

Cardiac hemodynamic studies during control resting state and isoproterenol infusion were performed on five patients with constrictive pericarditis. During isoproterenol infusion, stroke volume increased by 60%, while there was no significant change in pulmonary wedge and right atrial mean pressures....

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Bibliographic Details
Published in:Circulation (New York, N.Y.) N.Y.), 1970-09, Vol.42 (3), p.487-490
Main Authors: Nakhjavan, F K, Goldberg, H
Format: Article
Language:English
Subjects:
Adult
Blood Pressure - drug effects
Body Surface Area
Cardiac Catheterization
Cardiac Output - drug effects
Heart Rate - drug effects
Heart Ventricles - drug effects
Heart Ventricles - physiopathology
Hemodynamics - drug effects
Humans
Isoproterenol - pharmacology
Male
Middle Aged
Oxygen Consumption - drug effects
Pericarditis, Constrictive - physiopathology
Vascular Resistance - drug effects
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Summary:Cardiac hemodynamic studies during control resting state and isoproterenol infusion were performed on five patients with constrictive pericarditis. During isoproterenol infusion, stroke volume increased by 60%, while there was no significant change in pulmonary wedge and right atrial mean pressures. The relatively fixed filling pressure is the indirect evidence of fixed diastolic size of the heart. However, the fixed cardiac size in diastole per se does not necessarily indicate hindrance to filling of the heart unless the limits of diastolic size of the heart are reached. It is concluded that during the supine resting state, when the influence of catecholamines is minimal, systolic emptying of ventricles is hindered. The systolic hindrance is, however, overcome by strong positive inotropic stimulation.
ISSN:0009-7322
1524-4539
DOI:10.1161/01.CIR.42.3.487