title: Acute effects of cigarette smoking on the QT interval in healthy smokers.
abstract: This study assesses the effect of a first cigarette smoked in the morning on the QT interval duration in healthy habitual smokers after not smoking overnight. This study demonstrates that although after cigarette smoking the QT(Bc) values increase, the QT(Fc) and QT(Lc) values remained unchanged, and an increased sympathetic response was evident. The discrepancies between the results seen by different QT correction formulas emphasize the importance of selecting an accurate method for heart rate correction when evaluating and interpreting alterations in QT values.
authors.affiliation: Kardiológiai Osztály, Szent Ferenc Kórház, Budapest, Hungary. SztFKorhKardalap@axelero.hu
authors.forename: Gábor
authors.initials: G
authors.lastname: Andrássy
authors.forename: Attila
authors.initials: A
authors.lastname: Szabo
authors.forename: Andrea
authors.initials: A
authors.lastname: Dunai
authors.forename: Eszter
authors.initials: E
authors.lastname: Simon
authors.forename: Tímea
authors.initials: T
authors.lastname: Nagy
authors.forename: Zsófia
authors.initials: Z
authors.lastname: Trummer
authors.forename: Adám
authors.initials: A
authors.lastname: Tahy
authors.forename: András
authors.initials: A
authors.lastname: Varro
mesh_terms: D000328:Adult; D001794:Blood Pressure; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D012907:Smoking / Q000503:physiopathology*