Abstract
BACKGROUND: Post operative sore throat (PST) is one of the most common complaints after tracheal intubation. In this study we compared the effects of curved and straight laryngoscope blades on severity and incidence of PST. METHOD: In this prospective randomized clinical trial we evaluated incidence and severity of PST in 147 ASA physical status I–II, aged 18 – 62 y (group Miller, n = 71), (group Macintosh, n = 76) following intubation with Miller and Macintosh laryngoscope blades by using Visual Analog Scale (VAS). RESULTS: The overall incidence of PST in our study was 35.4% (Macintosh group = 39.5% and in Miller group = 31% and P = 0.829). The incidence of PST was not statistically different between two kinds of laryngoscope blades and the mean rank of pain score was not statistically different in recovery room and up to 48 hours after surgery. CONCLUSIONS: Our study showed these types of laryngoscope blade had not association with incidence and severity of PST. .
Highlights
Post operative sore throat (PST) is one of the most frequent complaints after tracheal intubation and its incidence varies between 14% - 50% [1,2,3,4]
The overall incidence of PST in our study was 35.4% (Macintosh group = 39.5% and in Miller group = 31% and P = 0.829) and the highest mean Visual Analog Scale (VAS) score was observed at third post operative hour in both groups (Figure 1)
In our country, curved blade laryngoscope are more commonly used than straight blades especially in our hospital, because the laryngoscopic views obtained with curved blades are better than straight blades [10]
Summary
Post operative sore throat (PST) is one of the most frequent complaints after tracheal intubation and its incidence varies between 14% - 50% [1,2,3,4]. Our hypothesis was that straight blade (Miller) generates less pressure on pharyngeal wall, muscles and ligaments of pharynx than curved blade (Macintosh). Post operative sore throat (PST) is one of the most common complaints after tracheal intubation. In this study we compared the effects of curved and straight laryngoscope blades on severity and incidence of PST. RESULTS: The overall incidence of PST in our study was 35.4% (Macintosh group = 39.5% and in Miller group = 31% and P = 0.829).
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