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Differential effects of propofol and sevoflurane on QT interval during anesthetic induction

  • Makito Oji
  • Yoshiaki Terao
  • Tomomi Toyoda
  • Tomoyuki Kuriyama
  • Kosuke Miura
  • Makoto Fukusaki
  • Koji Sumikawa
Original Research

Abstract

There have been conflicting reports on whether propofol prolongs, shortens, or does not change QT interval. The aim of this study was to determine the effect of target-controlled infusion (TCI) of propofol on heart rate-corrected QT (QTc) interval during anesthetic induction. We examined 50 patients undergoing lumbar spine surgery. Patients received 3 μg/kg of fentanyl and were randomly allocated to one of the following 2 groups. Group S patients received 5 mg/kg of thiamylal followed by sevoflurane, 5 % at the inhaled concentration. Group P patients received propofol using TCI system at 5 μg/mL for 2 min followed by 3 μg/mL. Tracheal intubation was performed after vecuronium administration. Heart rate (HR), mean arterial pressure (MAP), bispectral index score (BIS), and QTc interval in 12-lead electrocardiogram were recorded at the following time points: just before fentanyl administration (T1), 2 min after fentanyl injection (T2), 1 min after thiamylal injection or 2 min after the start of TCI (T3), just before intubation (T4), and 2 min after intubation (T5). BIS and MAP significantly decreased after anesthetic induction in both groups. HR decreased after anesthetic induction and recovered after tracheal intubation in group P, whereas it did changed in group S throughout the study period. QTc interval was shortened at T3 and T4 in group P, but prolonged at T3, T4, and T5 in group S, as compared with T1. Propofol TCI shortens QTc interval, whereas sevoflurane prolongs QTc interval during anesthetic induction.

Keywords

Propofol Sevoflurane QT interval QT dispersion Dysrhythmias 

Notes

Acknowledgments

This research was supported, in part, by research funds of the Japan Labor Health and Welfare Organization to promote function.

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Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • Makito Oji
    • 1
  • Yoshiaki Terao
    • 1
  • Tomomi Toyoda
    • 1
  • Tomoyuki Kuriyama
    • 1
  • Kosuke Miura
    • 1
  • Makoto Fukusaki
    • 1
  • Koji Sumikawa
    • 2
  1. 1.Department of AnesthesiaNagasaki Rosai HospitalSaseboJapan
  2. 2.Department of AnesthesiologyNagasaki University School of MedicineNagasakiJapan

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