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  • Mills, Nicholas LCentre for Cardiovascular Science, Edinburgh University, Edinburgh, UK (author)

Diesel exhaust inhalation does not affect heart rhythm or heart rate variability

  • Article/chapterEnglish2011

Publisher, publication year, extent ...

  • 2010-10-20
  • BMJ,2011
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:umu-39684
  • https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-39684URI
  • https://doi.org/10.1136/hrt.2010.199042DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Objective Exposure to air pollution is associated with increases in cardiovascular morbidity and mortality. This study was undertaken to determine the effect of diesel exhaust inhalation on heart rhythm and heart rate variability in healthy volunteers and patients with coronary heart disease.Design and setting Double-blind randomised crossover studies in a university teaching hospital.Patients 32 healthy non-smoking volunteers and 20 patients with prior myocardial infarction.Interventions All 52 subjects were exposed for 1 h to dilute diesel exhaust (particle concentration 300 μg/m(3)) or filtered air.Main outcome measures Heart rhythm and heart rate variability were monitored during and for 24 h after the exposure using continuous ambulatory electrocardiography and assessed using standard time and frequency domain analysis.Results No significant arrhythmias occurred during or following exposures. Patients with coronary heart disease had reduced autonomic function in comparison to healthy volunteers, with reduced standard deviations of the NN interval (SDNN, p<0.001) and triangular index (p<0.001). Diesel exhaust did not affect heart rate variability compared with filtered air (p>0.05 for all) in healthy volunteers (SDNN 101±6 vs 91±6, triangular index 20±1 vs 21±1) or patients with coronary heart disease (SDNN 47±5 vs 38±4, triangular index 8±1 vs 7±1).Conclusions Brief exposure to dilute diesel exhaust does not alter heart rhythm or heart rate variability in healthy volunteers or well-treated patients with stable coronary heart disease. Autonomic dysfunction does not appear to be a dominant mechanism that can explain the observed excess in cardiovascular events following exposure to combustion-derived air pollution.

Added entries (persons, corporate bodies, meetings, titles ...)

  • Finlayson, Alexander ECentre for Cardiovascular Science, Edinburgh University, Edinburgh, UK (author)
  • Gonzalez, Manuel CUmeå universitet,Kardiologi(Swepub:umu)mago0006 (author)
  • Törnqvist, HåkanUmeå universitet,Lungmedicin (author)
  • Barath, StefanUmeå universitet,Lungmedicin(Swepub:umu)stnbah98 (author)
  • Vink, ElenCentre for Cardiovascular Science, Edinburgh University, Edinburgh, UK (author)
  • Goudie, ColinCentre for Cardiovascular Science, Edinburgh University, Edinburgh, UK (author)
  • Langrish, Jeremy PCentre for Cardiovascular Science, Edinburgh University, Edinburgh, UK (author)
  • Söderberg, StefanUmeå universitet,Kardiologi,kardiologi(Swepub:umu)stso0001 (author)
  • Boon, Nicholas Antre for Cardiovascular Science, Edinburgh University, Edinburgh, UK (author)
  • Fox, Keith A Antre for Cardiovascular Science, Edinburgh University, Edinburgh, UK (author)
  • Donaldson, KenELEGI Colt Laboratory, Centre for Inflammation Research, Edinburgh University, Edinburgh, UK (author)
  • Sandström, ThomasUmeå universitet,Lungmedicin(Swepub:umu)thsa0001 (author)
  • Blomberg, AndersUmeå universitet,Lungmedicin(Swepub:umu)anbl0001 (author)
  • Newby, David ECentre for Cardiovascular Science, Edinburgh University, Edinburgh, UK (author)
  • Centre for Cardiovascular Science, Edinburgh University, Edinburgh, UKKardiologi (creator_code:org_t)

Related titles

  • In:Heart: BMJ97:7, s. 544-5501355-60371468-201X

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