Cardiovasular changes after placement of a classic endotracheal tube, double-lumen tube, and Laryngeal Mask Airway

Journal of Clinical Anesthesia
Ayse MizrakUnsal Oner


To compare hemodynamic responses, P wave dispersion (Pd), and QT dispersion (QTd) after placement of a classic endotracheal tube (ETT), double-lumen tube (DLT), or Laryngeal Mask Airway (LMA). Prospective study. Outpatient surgery center. 75 adult, ASA physical status 1 and 2 patients undergoing cystoscopy and thoracoscopic surgery. Patients were randomized to undergo placement of an ETT (Group T; n = 25), DLT (Group D; n = 25), or LMA (Group L; n = 25). Anesthesia was induced by etomidate 0.3 mg/kg and fentanyl 1.0 μg/kg, and maintained with nitrous oxide, oxygen, 2% to 3% sevoflurane, and rocuronium 0.5 mg/kg. Mean arterial pressure (MAP) and heart rate (HR) were recorded immediately before intubation and after intubation at one, 3, 5, 10,15, 20, 25, and 30 minutes after intubation/airway insertion. QT dispersion after tube placement was significantly higher than before tube placement in Group D (P = 0.0001) and Group L (P = 0.03). Mean arterial pressure and HR in Group T were significantly higher than in Group L at the first minute after tube placement (P = 0.02). Heart rate and MAP at baseline were significantly higher than the other measurement times in Groups T and D (P < 0.01). The LMA caused no change in Pd, HR, or MAP ...Continue Reading


Nov 1, 1989·Anaesthesia·J E SmithV C Scott-Knight
Mar 1, 1987·British Journal of Anaesthesia·A J ShribmanK J Achola
Nov 1, 1984·Anaesthesia·R S Cormack, J Lehane
Jun 1, 1982·Acta Anaesthesiologica Scandinavica·U M Kautto
Aug 1, 1981·British Journal of Anaesthesia·W J RussellS E Drew
Jan 1, 1995·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·Y FujiiH Toyooka
Oct 1, 1995·Journal of the American College of Cardiology·K WeiA Langer
Apr 1, 1994·Anaesthesia·H G SchaeferJ Drewe
Feb 1, 1996·Journal of Clinical Anesthesia·A L Kovac
Jan 22, 2005·Journal of Electrocardiology·Rashmi R Shah
May 7, 2005·Journal of Clinical Psychopharmacology·Maria A RettenbacherW Wolfgang Fleischhacker


Feb 1, 2015·Journal of Clinical Monitoring and Computing·Huseyin TomanMehmet Akif Ovali

Related Concepts

Surgery, Day
Anesthesia Procedures
Diastolic Blood Pressure
Cystoscopic Surgical Procedures
Double-Blind Method
Pulse Rate
Intubation, Intratracheal
Surgical Procedures, Thoracoscopic
Laryngeal Masks
Anesthesia Procedures

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