Korean J Anesthesiol.  2000 Mar;38(3):399-403. 10.4097/kjae.2000.38.3.399.

Response in Insertion of a COPA (cuffed oropharyngeal airway) with and without Muscle Relaxant

• Min BS
• Kim ST
• Kim SB
• Shin YD
• Bae JH
• Lim SW

• KMID: 2237276
• DOI: http://doi.org/10.4097/kjae.2000.38.3.399

Abstract

BACKGROUND: COPA (cuffed oropharyngeal airway) is a convenient device for airway management in patients undergoing general anesthesia for elective surgery in supine position. It causes less pharyngeal trauma than LMA (Laryngeal mask airway). The purpose of this study was to compare the effect of COPA with and without muscle relaxant.
METHODS
Forty patients with ASA physical status I and II for elective surgery were randomly assigned to two groups. Anaesthesia was induced with propofol (2 mg/kg) and vecuronium (1.5 mg/kg) and was administered intravenously in Group I but not in Group II. Mask ventilation was done for 5 min with O2 5 L/min. COPA was placed and heart rate, and systolic, mean, diastolic blood pressure and peak inspiratory pressure were measured at 1 min interval for 5 min. Anaesthesia was maintained with propofol 150 microgram/kg/min, fentanyl 1 microgram/kg/hr, O2 2 L/min and N2O 2 L/min.
RESULTS
There were no significant differences between Group I and Group II in heart rate, systolic, mean and diastolic blood pressure. PIP (Peak inspiratory pressure) was increased and hiccups occurred significantly (p < 0.05) in Group II. Complete airway obstruction occurred in one patient of Group I and severe coughing, body movements and gagging occurred during induction and insertion in Group II.
CONCLUSIONS
With the use of appropriate muscle relaxant, we can use COPA without increased inspiratory pressure or significant complication.

Keyword

Airway: cuffed oropharyngeal airway; Anesthetics, intravenous: propofol; Neuormuscular Relaxant: vecuronium

MeSH Terms

Airway Management
Airway Obstruction
Anesthesia, General
Blood Pressure
Cough
Fentanyl
Gagging
Heart Rate
Hiccup
Humans
Masks
Propofol
Supine Position
Vecuronium Bromide
Ventilation
Fentanyl
Propofol
Vecuronium Bromide