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The effect of cuff pressure on postoperative sore throat after Cobra perilaryngeal airway

Joe, HB; Kim, DH; Chae, YJ; Kim, JY; Kang, M; Park, KS
Journal of anesthesia, 26(2):225-229, 2012
Journal Title
Journal of anesthesia
PURPOSE: The cuff volume of the Cobra perilaryngeal airway (CobraPLA) is larger than that of other alternative airway devices and makes it difficult to predict the effect of cuff pressure on the perilaryngeal mucosa. We tested the hypothesis that adjustment of the cuff pressure of the CobraPLA could reduce the incidence of postoperative sore throat (POST).

METHODS: After induction of general anesthesia and insertion of the CobraPLA by standardized method, the cuff pressure was set to 60 cmH(2)O (group C, n = 87) or adjusted to minimal seal-up pressure +5 cmH(2)O (group A, n = 87). The frequency and severity (0, none; 1, mild; 2, moderate; 3, severe) of throat soreness, pain, discomfort, and adverse effects were evaluated 1 and 24 h after removal of the CobraPLA.

RESULTS: Incidence of moderate POST in group C was higher than that in group A (11% vs. 2%, P = 0.021) whereas the overall POST incidence was not different between the two groups (31% vs. 20%, P = 0.092). The inflated air volume of group A was different from that of group C (41 vs. 50 ml, P = 0.009).

CONCLUSIONS: Adjustment of cuff pressure reduces the incidence of moderate POST after use of the CobraPLA.
MeSH terms
AdultAnesthesia, General/adverse effects/methodsFemaleHumansIntubation, Intratracheal/*adverse effectsLaryngeal Masks/*adverse effectsMalePharyngitis/*etiologyPositive-Pressure Respiration/*adverse effects/instrumentation/methodsPostoperative PeriodPressure
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Anesthesiology & Pain Medicine
AJOU Authors
조, 한범김, 대희채, 윤정김, 종엽박, 관식
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