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[Alteration of systemic hemodynamics in dogs with adrenal hypertension].

Arterial hypertension was reproduced in 20 dogs by suturing the adrenal glands with ligature. Arterial pressure showed a significant fall in 2 weeks; cardiac output diminished, and the general peripheral resistance displayed a sharp elevation. The phasic syndrome of hypodynamia, a reduction of the contractility index, of the volumetric rate of cardiac output, of the cardiac index, and of the rate of increase of the intraventricular pressure pointed to reduction of the myocardial contractility. Three months after the suturing there was an even greater elevation of arterial pressure, and hemodynamic shifts were analogous to the two-week hypertension period.