Activation of Carotid Baroreceptors and Respiratory Resistance: Disappearance of the Respiratory Component of Baroreflex in the Course of Aging

Jacek J. Klawe; Małgorzata Tafil-Klawe; Anna Grabowska-Gaweł; Wojciech Sikorski; Bernadeta Drzewiecka; Agnieszka Radel; Katarzyna Dmitruk

Vol 7, No 1 (2003)

Original paper

Published online: 2003-01-16

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Activation of Carotid Baroreceptors and Respiratory Resistance: Disappearance of the Respiratory Component of Baroreflex in the Course of Aging

Jacek J. Klawe, Małgorzata Tafil-Klawe, Anna Grabowska-Gaweł, Wojciech Sikorski, Bernadeta Drzewiecka, Agnieszka Radel, Katarzyna Dmitruk

Nadciśnienie tętnicze 2003;7(1):15-18.

Vol 7, No 1 (2003)

Prace oryginalne

Published online: 2003-01-16

Abstract

Background Previous study shows a respiratory effector of carotid baroreceptor activation: the respiratory resistance. In the present study the age-related changes of respiratory response to carotid baroreceptor activation were studied.
Material and methods 125 healthy men 21-70 years old were involved in the study. The heart responses (the increase in R-R interval) and reflex changes of respiratory resistance were analysed during activation of carotid baroreceptors.
Results In the younger groups of subjects (21-40) a brief decrease of respiratory resistance was observed in response to carotid baroreceptors activation. In the course of aging we found a decrease of heart response and a disappearance of respiratory response.
Conclusions We suggest that both components of carotid baroreceptors reflex: cardiac and respiratory, are impaired during biological aging.