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Pregled bibliografske jedinice broj: 739702

The influence of varying inspired fractions of O2 and CO2 on the development of involuntary breathing movements during maximal apnoea


Brešković, Toni; Lojpur, Mihajlo; Zubin Maslov, Petra; Cross, Troy J.; Kraljević, Jasenka; Ljubković, Marko; Marinović, Jasna; Ivančev, Vladimir; Johnson, Bruce D.; Dujić, Željko.
The influence of varying inspired fractions of O2 and CO2 on the development of involuntary breathing movements during maximal apnoea // Respiratory physiology & neurobiology, 181 (2012), 2; 228-233 doi:10.1016/j.resp.2012.03.007 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 739702 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
The influence of varying inspired fractions of O2 and CO2 on the development of involuntary breathing movements during maximal apnoea

Autori
Brešković, Toni ; Lojpur, Mihajlo ; Zubin Maslov, Petra ; Cross, Troy J. ; Kraljević, Jasenka ; Ljubković, Marko ; Marinović, Jasna ; Ivančev, Vladimir ; Johnson, Bruce D. ; Dujić, Željko.

Izvornik
Respiratory physiology & neurobiology (1569-9048) 181 (2012), 2; 228-233

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
apnoea; diaphragm; ventilatory control; respiratory muscles

Sažetak
The growing urge to breathe that occurs during breath-holding results in development of involuntary breathing movements (IBMs). The present study determined whether IBMs are initiated at critical levels of hypercapnia and/or hypoxia during maximal apnoea. Arterial blood gasses at the onset of IBM were monitored during maximal voluntary breath-holds. Eleven healthy men performed breath holds after breathing air, hyperoxic–normocapnia, hypoxic– normocapnia, and normoxic–hypercapnia. Prebreathing of the gas mixtures facilitated the IBM onset, reducing the time-to-onset for  46% (hyperoxic condition) and for  80% (hypoxic condition) compared to the normoxic air breathing time. A strong correlation (R = 0.83, P = 0.002) between arterial partial pressure of CO2 (PaCO2 ) at IBM onset after pre-breathing hyperoxic and hypercapnic gas mixtures was observed, suggesting the existence of a possible IBM PaCO2 threshold level of  6.5 ± 0.5 kPa. No clear “threshold” was observed for partial pressure of arterial O2 (PaO2 ). However, we observed that IBM onset was influenced, in part, by an interaction between PaO2 and PaCO2 levels during maximal apnoea. This study demonstrated the complex interaction between arterial blood-gases and the physiological response to maximal breath holding.

Izvorni jezik
Engleski

Znanstvena područja
Temeljne medicinske znanosti



POVEZANOST RADA


Projekti:
216-2160133-0130 - Ronjenje s komprimiranim zrakom i kardiovaskularni sustav (Dujić, Željko, MZOS ) ( POIROT)

Ustanove:
Medicinski fakultet, Split

Citiraj ovu publikaciju

Brešković, Toni; Lojpur, Mihajlo; Zubin Maslov, Petra; Cross, Troy J.; Kraljević, Jasenka; Ljubković, Marko; Marinović, Jasna; Ivančev, Vladimir; Johnson, Bruce D.; Dujić, Željko.
The influence of varying inspired fractions of O2 and CO2 on the development of involuntary breathing movements during maximal apnoea // Respiratory physiology & neurobiology, 181 (2012), 2; 228-233 doi:10.1016/j.resp.2012.03.007 (međunarodna recenzija, članak, znanstveni)
Brešković, T., Lojpur, M., Zubin Maslov, P., Cross, T., Kraljević, J., Ljubković, M., Marinović, J., Ivančev, V., Johnson, B. & Dujić, Ž. (2012) The influence of varying inspired fractions of O2 and CO2 on the development of involuntary breathing movements during maximal apnoea. Respiratory physiology & neurobiology, 181 (2), 228-233 doi:10.1016/j.resp.2012.03.007.
@article{article, year = {2012}, pages = {228-233}, DOI = {10.1016/j.resp.2012.03.007}, keywords = {apnoea, diaphragm, ventilatory control, respiratory muscles}, journal = {Respiratory physiology and neurobiology}, doi = {10.1016/j.resp.2012.03.007}, volume = {181}, number = {2}, issn = {1569-9048}, title = {The influence of varying inspired fractions of O2 and CO2 on the development of involuntary breathing movements during maximal apnoea}, keyword = {apnoea, diaphragm, ventilatory control, respiratory muscles} }
@article{article, year = {2012}, pages = {228-233}, DOI = {10.1016/j.resp.2012.03.007}, keywords = {apnoea, diaphragm, ventilatory control, respiratory muscles}, journal = {Respiratory physiology and neurobiology}, doi = {10.1016/j.resp.2012.03.007}, volume = {181}, number = {2}, issn = {1569-9048}, title = {The influence of varying inspired fractions of O2 and CO2 on the development of involuntary breathing movements during maximal apnoea}, keyword = {apnoea, diaphragm, ventilatory control, respiratory muscles} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


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