"Cardiovascular reflex occurring upon stimulation of chemoreceptors
primarily in the left ventricle
by certain antihypertensive alkaloids and similar substances.
Afferent vagal fibers carry the impulses to the medulla oblongata
after which impulses carried back by efferent vagalfibers cause reflex bradycardia and hypotension.
The term has now come to include reactions triggered by cardiac mechanoreceptor activation.
Also used to describe perioperative bradycardia with hypotension occuring after regional anesthesia.."