Cardio-respiratory measures following isocapnic voluntary hyperventilation

Respiratory Physiology & Neurobiology
S MahamedJames Duffin

Abstract

In some individuals, breathing is greater than at rest following voluntary hyperventilation. Most previous investigations have employed short hyperventilation periods; here we examine the time course of cardio-respiratory measures before, during, and after a 5-min voluntary hyperventilation, maintaining isocapnia throughout. We examined the possible co-involvement of the cardiovascular system; hypothesising that post-hyperventilation hyperpnoea results from an increase in autonomic arousal. In four subjects (two males, two females) of 18 (nine males, nine females) we observed a post-hyperventilation hyperpnoea, characterised by a slow decline of ventilation toward resting levels with a time constant of 109.0 +/- 16.1s. By contrast, heart rate, and systolic and diastolic blood pressure were unchanged from rest during and after voluntary hyperventilation for all subjects. We concluded that males and females were equally likely to exhibit post-hyperventilation hyperpnoea, and suggest that they may be characterised by an increased resting heart rate and the choice of breathing frequency to increase ventilation during the voluntary hyperventilation. We further concluded that post-hyperventilation hyperpnoea is rare, but when present...Continue Reading

References

Mar 1, 1978·The American Journal of the Medical Sciences·T NishinoY Honda
May 1, 1976·Journal of Clinical Pharmacology·K StollerJ W Bellville
Jan 1, 1992·British Journal of Anaesthesia·N W Goodman, I G Kestin
Jan 1, 1991·Respiration Physiology·P G Wagner, F L Eldridge
Mar 1, 1974·Journal of Neurology, Neurosurgery, and Psychiatry·S JennettJ B North
Jan 1, 1966·Respiration Physiology·J W SeveringhausA Carcelen
Jan 1, 1982·The Japanese Journal of Physiology·N Takano
Jun 15, 1994·The Journal of Physiology·M S Meah, W N Gardner
Aug 1, 1993·Respiration Physiology·M AhmedN R Anthonisen
Aug 1, 1995·Respiration Physiology·D R CorfieldA Guz
Jun 1, 1996·American Journal of Respiratory and Critical Care Medicine·K ChinK Kuno
Jan 1, 1996·Experimental Physiology·S A Shea
Feb 1, 1997·Canadian Journal of Applied Physiology = Revue Canadienne De Physiologie Appliquée·T Rapanos, J Duffin
May 1, 1997·Respiration Physiology·R Mohan, J Duffin
Oct 8, 1998·The European Respiratory Journal·L Z SommerJ A Fisher
Mar 30, 1999·Circulation·P van de BorneV K Somers
Jun 29, 2001·Experimental Physiology·S MahamedJ Duffin
Jul 17, 2001·The Journal of Physiology·S Mahamed, J Duffin
Oct 2, 2001·British Journal of Sports Medicine·S D AndersonK Holzer
Jun 18, 2002·Acta Neurologica Scandinavica·R FlinkUNKNOWN Commission of European Affairs of the International League Against Epilepsy: Subcommission on European Guidelines
Nov 12, 2002·Respiratory Physiology & Neurobiology·Lukasz StruzikMartin A Katzman
Nov 12, 2002·Respiratory Physiology & Neurobiology·Andreas FahlmanKathryn H Myburgh
Dec 18, 2002·Journal of Applied Physiology·Gordon S Mitchell, Stephen M Johnson
Apr 26, 2003·American Journal of Respiratory and Critical Care Medicine·Stephen CorneMagdy Younes
Jun 12, 2003·The European Respiratory Journal·G F JoosUNKNOWN ERS Task Force
May 20, 2006·Journal of Applied Physiology·R F FregosiR R Bootzin
Sep 18, 1946·The Journal of Physiology·J N Mills
Dec 15, 1908·The Journal of Physiology·J S Haldane, E P Poulton
Jun 15, 1909·The Journal of Physiology·C G Douglas, J S Haldane
Dec 9, 1912·The Journal of Physiology·W M Boothby

❮ Previous
Next ❯

Citations

Feb 7, 2012·Respiratory Physiology & Neurobiology·Frank L Powell
Jun 26, 2007·Respiratory Physiology & Neurobiology·Jaideep J PanditMarc J Poulin
Apr 26, 2011·Respiratory Physiology & Neurobiology·J Duffin
Jan 24, 2019·Experimental Physiology·Bartłomiej PalecznyBeata Ponikowska

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.