Baroreflex

Broader Terms

reflex slowing of the heart rate caused by pressure on, or in, the carotid artery.

The baroreflex is counteracted by autoregulation, thereby preventing circulatory instability.
First, the arterial baroreflex is a negative feedback reflex that regulates arterial pressure around a preset value called a set or operating point.
Hemodynamic response to electrical activation of the carotid baroreflex is preserved during administration of antihypertension medications in canines.
In fact, the minimization of blood pressure variability by baroreflex mechanisms is important since studies suggest that a reduced baroreflex is an independent risk factor for sudden death after myocardial infarction (2,3).
45,10,17 Fur- thermore, because baroreflex-mediated renal sympathoinhi- bition has persistent effects to promote sodium excretion, 5,7 it is reasonable to conclude that the baroreflex is a long-term compensatory mechanism that attenuates the severity of Ang II hypertension.

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