Sore throat after laryngeal mask insertion
Authors:
Dostálová Kateřina 1; Doubravská Lenka 1; Fritscherová Šárka 1; Koutná Jiřina 1; Obare Pyszková Lenka 1; Zapletalová Jana 2; Adamus Milan 1
Authors place of work:
Klinika anesteziologie, resuscitace a intenzivní medicíny FN a LF UP Olomouc
1; Ústav lékařské biofyziky, LF UP Olomouc
2
Published in the journal:
Anest. intenziv. Med., 26, 2015, č. 2, s. 72-78
Category:
Anaesthesiology - Original Paper
Summary
Objective:
To assess the ability of the anaesthesiologist to predict the degree of laryngeal mask airway (LMA) cuff inflation and to determine factors leading to sore throat after LMA insertion.
Design:
A prospective, observational, double-blinded study.
Setting:
Wards and ICUs of surgery, traumatology, urology, plastic and aesthe surgery at a University Hospital.
Materials and methods:
The study enrolled 300 elective surgery patients whose airway was secured by LMA. The patients were questioned about sore throat on the 1st postoperative day. The questionnaire captured demographic data, maintenance of anaesthesia, LMA size, insertion and removal technique and cuff pressure at 30 minutes after insertion. The outcome data were processed by SPSS statistical software using appropriate statistical tests at significance level of 0.05.
Results:
The incidence of sore throat was 6 %. It was influenced by the insertion technique; we recorded lower incidence of sore throat after LMA insertion with the pilot balloon opened to the atmosphere compared with the cuff deflated (13.1 vs. 33.3 %, p = 0.037). We demonstrated that sore throat was more frequent when cuff pressure exceeded 60 cm H2O compared to pressure below 60 cm H2O (24.8 vs. 12.6 %, p = 0.009) and there was significant correlation between N2O usage and the cuff pressure > 60 cm H2O compared to N2O-free anaesthesia(46 vs. 18 %, p = 0.0005).
Conclusion:
LMA cuff pressure above 60 cm H2O, LMA insertion with a deflated cuff and the use of N2O increase postoperative sore throat incidence.
Keywords:
sore throat – laryngeal mask airway – cuff pressure – nitrous oxide administration
Zdroje
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Štítky
Anaesthesiology, Resuscitation and Inten Intensive Care MedicineČlánok vyšiel v časopise
Anaesthesiology and Intensive Care Medicine
2015 Číslo 2
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