Carotid baroreflex heart rate control during the active and the assisted breathing cycle in man

Acta Physiologica Scandinavica
A Melcher

Abstract

The interaction between the phase of the breathing cycle and the carotid baroreflex heart rate control was studied in fifteen healthy subjects with special reference to respiratory sinus arrhythmia (RSA). Carotid baroreceptors were stimulated by neck suction. With a standardized breathing pattern, two types of experiment were performed. (a) Neck suction applied in counter phase with the respiratory arterial pressure variations; this reduced the amplitude and shifted the phase of the transmural carotid arterial pressure oscillations but did not influence the RSA. (B) During active as well as ventilator assisted breathing, brief periods of neck suction were applied during either inspiration (insufflation) or expiration. Neck suction during active inspiration did not change the amplitude of the RSA but when applied during expiration, increased it by 6.8 beats X min-1 (P less than 0.001). In the ventilator experiments, neck suction during insufflation and expiration augmented the RSA equally, by 5.3 beats X min-1 (P less than 0.05). The results indicate a decreased sensitivity of the carotid arterial baroreflex during active inspiration, with no equivalent during assisted breathing, and suggest that the change in baroreflex sensibi...Continue Reading

References

Sep 1, 1976·Scandinavian Journal of Clinical and Laboratory Investigation·U Freyschuss, A Melcher
May 1, 1977·The Journal of Clinical Investigation·D L Eckberg, C R Orshan
Jan 1, 1976·Acta Physiologica Scandinavica. Supplementum·U Freyschuss, A Melcher
Nov 1, 1975·Progress in Cardiovascular Diseases·R J Liden
Oct 1, 1975·Scandinavian Journal of Clinical and Laboratory Investigation·U Freyschuss, A Melcher
Mar 1, 1975·The Journal of Physiology·B T Haymet, D I McCloskey
Aug 1, 1975·Circulation Research·S F VatnerR J McRitchie
Jul 1, 1974·Physiological Reviews·R A WolthuisA E Nicogossian
Jan 1, 1972·Journal of Applied Physiology·S J Shubrooks
Jan 1, 1966·The Journal of Clinical Investigation·B S Bevegård, J T Shepherd
Jan 1, 1966·Circulation Research·M N LevyH Zieske
Jan 1, 1966·Acta Anaesthesiologica Scandinavica. Supplementum·P Herzog, O P Norlander
Aug 28, 1956·The Journal of Physiology·N JOELS, M SAMUELOFF
Feb 1, 1958·The American Journal of Cardiology·B BOSHES
May 1, 1964·Journal of Applied Physiology·A ANGELONE, N A COULTER
Aug 23, 1920·The Journal of Physiology·F A Bainbridge

❮ Previous
Next ❯

Citations

Feb 21, 2009·Clinical Autonomic Research : Official Journal of the Clinical Autonomic Research Society·Victoria L Cooper, Roger Hainsworth
Jun 25, 1995·Journal of the Autonomic Nervous System·V G Macefield, B G Wallin
Apr 8, 1998·Journal of the Autonomic Nervous System·J KohD L Eckberg
Mar 1, 1991·Acta Physiologica Scandinavica·A Yli-HankalaV Jäntti
Jan 1, 1990·Journal of Perinatal Medicine·C M van Ravenswaaij-ArtsG B Stoelinga
Jun 13, 2006·European Journal of Applied Physiology·Ricardo Brandão OliveiraClaudio Gil S Araújo
Jul 1, 1985·Journal of Biomedical Engineering·R I KitneyD A Linkens
Mar 19, 2003·Clinical Physiology and Functional Imaging·Patrik Sundblad, Dag Linnarsson
May 1, 1996·IEEE Transactions on Bio-medical Engineering·K H ChonR J Cohen
May 1, 1983·Psychophysiology·P Grossman
Apr 21, 1985·Journal of Theoretical Biology·D P Giddens, R I Kitney
Jan 1, 1981·Circulation·J T Shepherd
Mar 1, 1995·Food Additives and Contaminants·R Tahvonen, J Kumpulainen
Sep 6, 2003·American Journal of Physiology. Heart and Circulatory Physiology·H E CooperM J Parkes

❮ Previous
Next ❯

Related Concepts

Related Feeds

Atrial Fibrillation

Atrial fibrillation is a common arrhythmia that is associated with substantial morbidity and mortality, particularly due to stroke and thromboembolism. Here is the latest research.

Arrhythmia

Arrhythmias are abnormalities in heart rhythms, which can be either too fast or too slow. They can result from abnormalities of the initiation of an impulse or impulse conduction or a combination of both. Here is the latest research on arrhythmias.