QT dispersion magnitude is related to the respiratory phase in healthy subjects.
Twelve-lead electrocardiograms in 20 healthy volunteers during quiet respiration, maximum inspiration, and maximum expiration were recorded. QT dispersion was statistically significantly shorter both at maximum inspiration and maximum expiration than during quiet breathing.
Krupienicz
A
A
Department of Cardiology, Military Medical Academy, Warsaw, Poland.
Czarnecki
R
R
Adamus
J
J
D000328:Adult; D004562:Electrocardiography; D005260:Female; D006321:Heart / Q000502:physiology*; D006801:Humans; D008297:Male; D009200:Myocardial Contraction / Q000502:physiology; D015203:Reproducibility of Results; D012119:Respiration / Q000502:physiology*