Do the oscillations of cardiovascular parameters persist during voluntary apnea in humans?

Do the oscillations of cardiovascular parameters persist during voluntary apnea in humans? Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Do the oscillations of cardiovascular parameters persist during voluntary apnea in humans? Abstract Text:

M Javorka,I Zila,K Javorka,A ,

The aim of this study was to ascertain the persistence of heart rate and blood pressure oscillations at the onset of voluntary apnea in humans and to assess the dependence of the fluctuations parameters on the chemoreceptor activity. In 24 young subjects (10 males, 14 females, mean age 20.4 years) heart rate (represented by its reciprocal value--RR-intervals), systolic blood pressure (SBP) and diastolic blood pressure (DBP) during controlled breathing (CB) of atmospheric air and oxygen followed by apnea were recorded continuously. The cosine functions were then fitted by nonlinear regression analysis to the heart rate, SBP and DBP oscillations during CB and at the onset of apnea. The parameters of oscillations were different during atmospheric air breathing compared to oxygen breathing. During oxygen breathing there was an increase of the RR-interval oscillations--relative bradycardia and enhanced magnitude of respiratory sinus arythmia. During apnea, the base level of the blood pressure oscillations was higher after breathing of atmospheric air compared to oxygen breathing. At least one cosine-like wave oscillation was present at the onset of apnea in the heart rate, SBP and DBP and the second wave was present in all assessed parameters in at least 70% of recordings. The oscillations in RR-intervals are, to some extent, independent of blood pressure oscillations. No significant gender differences were found either in the duration of breath holding or in the RR and SBP oscillations parameters.

Do the oscillations of cardiovascular parameters persist during voluntary apnea in humans? Publishing Authors By Initials

M Javorka,I Zila,K Javorka,A ,

For similar psychological phenomena and processes: mental processes: volition research abstracts see: psychological phenomena and processes: mental processes: volition research

PUBMED ID PMID:

MEDLINE DATE:

Do the oscillations of cardiovascular parameters persist during voluntary apnea in humans? Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Physiological research / Academia Scientiarum Bohe

VOLUME: 51

Page Numbers: 227-38

Journal Abbreviation: Physiol Res

ISSN: 0862-8408

DAY: 2

MONTH: 04

YEAR: 2002

Do the oscillations of cardiovascular parameters persist during voluntary apnea in humans? Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 9112413

Do the oscillations of cardiovascular parameters persist during voluntary apnea in humans? Keywords Mesh Terms:

KEYWORDS: Volition

MESH TERMS: physiology

Chemical & Substance for Abstract: Do the oscillations of cardiovascular parameters persist during voluntary apnea in humans? Information

Substance Name: Oxygen

Registry Number: 7782-44-7

Grant and Affiliation Information for Do the oscillations of cardiovascular parameters persist during voluntary apnea in humans?

AFFILIATION: Department of Physiology, Jessenius Faculty of Medicine, Comenius University, Martin, Slovak Republic.

Country: Czech Republic

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: Physiol Res

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Do the oscillations of cardiovascular parameters persist during voluntary apnea in humans? Related Publications

• Aminophylline treatment in meconium-induced acute lung injury in a rabbit model.
• Do the oscillations of cardiovascular parameters persist during voluntary apnea in humans?
• Intratracheally administered corticosteroids improve lung function in meconium-instilled rabbits.
• Single-dose versus two-dose dexamethasone effects on lung inflammation and airway reactivity in meconium-instilled rabbits.