A comparative study between cuffed oropharyngeal airway and laryngeal mask airway in spontaneously breathing anaesthetized patients for short surgical procedures

In this study total hundred patients wee included. Fifty (group I) were subjected to COPA device for airway maintenance and in other fifty (group II) LMA was used. In this study first attempt successful insertion rate in group I was 90% while in group II it was 94%. However statistical analysis showed no significant different in both groups. Regarding maneuvers needed to maintain smooth breathing in group I head tilt was used in 2 %. It is significantly high in group I than in group II. Laboured breathing was seen in 6% in group I while 2% in group II. There was no significant difference in both groups. According to this study LMA is better in all respect as it is easier to insert and better fit in.

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Comparative evaluation of the prolonged use of the cuffed oropharyngeal airway and the laryngeal mask airway in spontaneously breathing anaesthetized patients

European Journal of Anaesthesiology ◽

10.1097/00003643-199906000-00004 ◽

1999 ◽

Vol 16 (6) ◽

pp. 371-375 ◽

Cited By ~ 2

Author(s):

G. S. Voyagis ◽

V. K. Dimitriou ◽

K. P. Kyriakis

Keyword(s):

Laryngeal Mask Airway ◽

Comparative Evaluation ◽

Laryngeal Mask ◽

Oropharyngeal Airway ◽

Spontaneously Breathing

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A Randomized Controlled Trial Comparing the Cuffed Oropharyngeal Airway and the Laryngeal Mask Airway in Spontaneously Breathing Anesthetized Adults

Anesthesiology ◽

10.1097/00000542-199804000-00017 ◽

1998 ◽

Vol 88 (4) ◽

pp. 970-977 ◽

Cited By ~ 78

Author(s):

Robert S. Greenberg ◽

Joseph MB Brimacombe ◽

Alison Berry ◽

Victoria Gouze ◽

Steven Piantadosi ◽

...

Keyword(s):

Laryngeal Mask Airway ◽

Controlled Trial ◽

Head Tilt ◽

Ease Of Use ◽

Laryngeal Mask ◽

Oropharyngeal Airway ◽

Average Total Number ◽

Spontaneously Breathing ◽

First Time ◽

Better Than

Background The cuffed oropharyngeal airway (COPA), a modified Guedel airway, was compared with the laryngeal mask airway (LMA) during spontaneous breathing anesthesia. Specifically examined were ease of use, physiologic tolerance, and the frequency of problems. Methods Adult patients consented to random (2:1) assignment to either COPA (n = 302) or LMA (n = 151) for airway management during anesthesia with propofol, nitrous oxide, and oxygen. Results Ease of insertion was similar, but the first-time successful insertion rate was higher with the LMA (COPA, 81% compared with LMA, 89%; P = 0.05). More brief manipulations (head tilt, chin lift, jaw thrust) were reported in the COPA group (average total number of manipulations: COPA, 1.1 +/- 1.6 compared with LMA, 0.1 +/- 0.2; P < 0.001). Continuous airway support was used more frequently in the COPA group (COPA, 30% compared with LMA, 0%; P < 0.0005). The incidences of aspiration, regurgitation, laryngospasm, wheezing, succinylcholine administration, oxygen saturation (SpO2) < 92%, failed use, and minor intraoperative problems were similar. When the airways were removed, blood was detected on the COPA less frequently than on the LMA (COPA, 5.8% compared with LMA, 15.3%; P = 0.001). The incidence of early and late sore throat was greater with the LMA (early: COPA, 4.7% compared with LMA, 21.9% [P = 0.001]; late: COPA, 8.4% compared with LMA, 16.1%; P = 0.01). The LMA did better than the COPA when anesthetists analyzed the technical aspects of the two devices. Conclusions Although the COPA and LMA are equivalent devices in terms of physiologic alterations and overall clinical problems associated with their use, the LMA was associated with a higher first-time insertion rate and fewer manipulations, suggesting that it is easier to use. The COPA was associated with less blood on the device and fewer sore throats, suggesting it may cause less pharyngeal trauma. Ultimately, both devices were similar in establishing a safe and effective airway for spontaneously breathing anesthetized adults.

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