NDLI: Chronotropic and dromotropic components of cardiac reflexes in the cat

Content Provider	Springer Nature Link
Author	Alipov, N. N. Sergeeva, O. V. Bobrova, N. A. Kuznetsova, T. E. Smirv, V. M.
Copyright Year	2008
Abstract	The relationship between dromotropic and chronotropic components of various cardiac reflexes was studied in cats. Intravenous infusion of blood was mainly accompanied by unidirectional negative chronotropic and dromotropic effects, but the dynamics of these effects was different. Clumping of the carotid arteries in most animals induced unidirectional negative chronotropic and dromotropic effects. Their dynamics was also different and differed from that observed during intravenous blood infusion. Pulsatile increase in blood pressure in the carotid artery was accompanied by a unidirectional negative effect in the majority of animals. The opposite chronotropic and dromotropic effects with similar temporal dynamics were revealed in 1/3 animals. The ratio of positive and negative effects was similar during clumping of the abdominal aorta (1/3 unidirectional, 1/3 opposite, and 1/3 isolated chronotropic and dromotropic effects). Aschner test was characterized by the prevalence of isolated chronotropic effect (negative effect in the majority of animals; positive effect in 1/3 animals). Hence, different cardiac reflexes are characterized by different ratio between chronotropic and dromotropic components.
Starting Page	168
Ending Page	173
Page Count	6
File Format	PDF
ISSN	00074888
Journal	Bulletin of Experimental Biology and Medicine
Volume Number	145
Issue Number	2
e-ISSN	15738221
Language	English
Publisher	Springer US
Publisher Date	2008-08-09
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	chronotropic influences dromotropic influences heart nervous regulation Laboratory Medicine Pathology Cell Biology Internal Medicine Biomedicine general
Content Type	Text
Resource Type	Article
Subject	Medicine Biochemistry, Genetics and Molecular Biology

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