Korean J Anesthesiol.  1997 Oct;33(4):648-652. 10.4097/kjae.1997.33.4.648.

The Effects of Tracheal Intubation with McCoy or Macintosh Laryngoscope on Blood Pressure, Heart Rate

• Joo JS
• Lee YS
• Jo DH
• Kim HK
• Chung CK

• KMID: 2237721
• DOI: http://doi.org/10.4097/kjae.1997.33.4.648

Abstract

BACKGROUND: The aim of this study was to compare the cardiovascular changes followed by laryngoscopy with the McCoy laryngoscope blade with those followed by laryngoscopy with the Macintosh laryngoscope blade.
METHODS
Forty eight patients were randomly divided into two groups. Following induction with fentanyl 2 mcg/kg and thiopental 5 mg/kg, and muscle relaxation with vecuronium 0.1 mg/kg, the vocal cords were visualized with either the McCoy or the Macintosh laryngoscope blade, then tracheal intubation was performed. Heart rate and arterial blood pressure were measured just before and after laryngoscopy, and 1, 3 and 5 min later.
RESULTS
There was a significant increase in both heart rate and arterial blood pressure after tracheal intubation using the Macintosh laryngoscope. Also, use of the McCoy blade resulted in a significant increase in both heart rate and arterial blood pressure.
CONCLUSIONS
There was no significant difference on arterial pressure and heart rate to laryngoscopy and tracheal intubation with either the McCoy blade or the Macintosh.

Keyword

Anesthetic technique, intubation; Equipment, laryngoscope

MeSH Terms

Arterial Pressure
Blood Pressure*
Fentanyl
Heart Rate*
Heart*
Humans
Intubation*
Laryngoscopes*
Laryngoscopy
Muscle Relaxation
Thiopental
Vecuronium Bromide
Vocal Cords
Fentanyl
Thiopental
Vecuronium Bromide