title: The effect of esmolol on the QTc interval during induction of anaesthesia in patients with coronary artery disease.
abstract: The aim of this study was to evaluate whether esmolol has an effect on QT interval during induction of anaesthesia using etomidate and fentanyl in patients with known coronary artery disease. Sixty patients were prospectively randomised to either a control group or the esmolol group. Esmolol was administered as a bolus 1 mg.kg(-1), followed by a continuous infusion at 250 microg.kg(-1)min(-1). All patients received etomidate 0.3 mg.kg(-1) and fentanyl 15 microg.kg(-1). The ECG was recorded prior to induction of anaesthesia (T0), 5 min following the start of drug infusions (T1), 1 min following etomidate (T2), 3 min following vecuronium (T3), 30 s (T4), 2 min (T5) and 4 min (T6) after intubation. In the esmolol group, QTc interval was significantly shorter at T1, T2 and T4 compared to the control group (p < 0.05). In conclusion, QTc interval increased following tracheal intubation during induction of anaesthesia using etomidate and fentanyl. An infusion of Esmolol attenuated the QTc interval prolongation associated with tracheal intubation.
authors.affiliation: Department of Anaesthesiology and Reanimation, School of Medicine, Inonu University, Malayta, Turkey. ferdil@inonu.edu.tr
authors.forename: F
authors.initials: F
authors.lastname: Erdil
authors.forename: S
authors.initials: S
authors.lastname: Demirbilek
authors.forename: Z
authors.initials: Z
authors.lastname: Begec
authors.forename: E
authors.initials: E
authors.lastname: Ozturk
authors.forename: A
authors.initials: A
authors.lastname: But
authors.forename: M
authors.initials: M
authors.lastname: Ozcan Ersoy
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000494:pharmacology*; D000368:Aged; D000771:Anesthesia, Intravenous / Q000379:methods*; D018686:Anesthetics, Intravenous; D001794:Blood Pressure / Q000187:drug effects; D001026:Coronary Artery Bypass; D003324:Coronary Artery Disease / Q000503:physiopathology* / Q000601:surgery; D004562:Electrocardiography / Q000187:drug effects*; D005045:Etomidate; D005260:Female; D005283:Fentanyl; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D007442:Intubation, Intratracheal; D008297:Male; D008875:Middle Aged; D011412:Propanolamines / Q000494:pharmacology*; D011446:Prospective Studies
chemical_list: D000319:Adrenergic beta-Antagonists; D018686:Anesthetics, Intravenous; D011412:Propanolamines; C036604:esmolol; D005283:Fentanyl; D005045:Etomidate