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Gradation of the reflex response from atrial receptors.

1975; Wiley; Volume: 251; Issue: 2 Linguagem: Inglês

10.1113/jphysiol.1975.sp011108

1469-7793

C. T. Kappagoda, R. J. Linden, D. A. S. G. Mary,

Heart Rate Variability and Autonomic Control

1. In anaesthetized dogs, distension of balloons so as to stimulate atrial receptors resulted in a reflex increase in heart rate. 2. Successive distensions of one, two and three balloons positioned in the left upper and middle pulmonary vein-atrial junctions and in the left atrial appendage resulted in a progressive increase in the magnitude of this response. 3. It is concluded that the magnitude of the increase in heart rate is related to the extent of receptor area stimulated.