[The role of adrenergic innervation in distributing systemic and coronary fractions of left ventricular output under increased pressure in the ascending aorta].
The significance of neurogenic influences upon the distribution of systemic and coronary fraction during rise of aortic pressure by step occlusion of ascending aorta was studied in anesthetized cats. Under elevation of aortic pressure up to 60 mm Hg the increase in systemic fraction and less pronounced rise of coronary fraction were observed. When aortic pressure elevation was more than 60 mm Hg commensurable increase of both fractions occurred. Under beta-adrenoreceptor blockade elevation of aortic pressure more than 60 mm Hg evoked the significant increase in systemic fraction and reduction in coronary fraction.
Osadchiĭ
L I
LI
Balueva
T V
TV
Sergeev
I V
IV
D000320:Adrenergic Fibers / Q000187:drug effects / Q000502:physiology*; D000818:Animals; D001011:Aorta / Q000187:drug effects / Q000502:physiology*; D001794:Blood Pressure / Q000187:drug effects; D002302:Cardiac Output / Q000187:drug effects; D002415:Cats; D003326:Coronary Circulation / Q000187:drug effects; D006321:Heart / Q000187:drug effects / Q000294:innervation*; D006352:Heart Ventricles / Q000187:drug effects; D008026:Ligation; D011433:Propranolol / Q000494:pharmacology; D013318:Stroke Volume / Q000187:drug effects; D016276:Ventricular Function
D011433:Propranolol
Rol' adrenergicheskoĭ innervatsii v raspredelenii sistemnoĭ i koronarnoĭ fraktsiĭ vybrosa levogo zheludochka pri povyshenii davleniia v voskhodiashcheĭ aorte.