Postoperative sore throat: cause, prevention and treatment

McHardy, Fiona; Chung, Frances

doi:10.1046/j.1365-2044.1999.00780.x

Cited by 400 publications

(360 citation statements)

References 71 publications

(89 reference statements)

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“…One wonders if tracheal or laryngeal inflammation is experienced as sore throat or just described as such? A recent review [16] leaves this question open, discussing instead`the factors that may cause postoperative throat symptoms such as pain, dysphagia and hoarseness'. The current study suggests that the site of most applied force is different in kind for the two modes of airway management.…”

Section: Discussionmentioning

confidence: 99%

Tracheal intubation and sore throat: a mechanical explanation

Chandler¹

2002

Anaesthesia

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SummaryAlthough tracheal intubation remains a valuable tool, it may result in pressure trauma and sore throat. The evidence for an association between these sequelae is not conclusive and sore throat may be caused at the time of intubation. This hypothesis was tested in a mechanical model and the results from tracheal intubation compared with those from insertion of a laryngeal mask airway, which is associated with a lower incidence of sore throat. Use of the model suggests that the tracheal tube and laryngeal mask airway impinge on the pharyngeal wall in different manners and involve different mechanisms for their conformation to the upper airway, but that in a static situation, the forces exerted on the pharyngeal wall are low with both devices. It also suggests that the incidence of sore throat should be lower for softer and smaller tracheal tubes and that the standard`Magill' curve (radius of curvature 140^20 mm) is about optimum for the average airway.

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Section: Discussionmentioning

confidence: 99%

Tracheal intubation and sore throat: a mechanical explanation

Chandler¹

2002

Anaesthesia

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“…All these studies give conflicting results. Local anaesthetic spray used before intubation has been said to decrease sore throat [22]. El.…”

Section: Discussionmentioning

confidence: 99%

“…A local anaesthetic sprayed into the larynx did not appear to alleviate sore throat [7,12]. The application of lignocaine spray before intubation appeared to increase the incidence of sore throat as a result of either mucosal irritation or repeated laryngoscopy [22] but it did make for smoother anaesthesia as it prevented coughing, movements during intubation…”

Section: Local Anaesthetic Spraymentioning

confidence: 94%

“…The high volume low pressure cuff can be converted into high volume high pressure cuff by over inflation or during nitrous oxide: oxygen anaesthesia. But these changes did not occur when cuffs were inflated with anaesthetic gas mixture [22]. Seegobin & Hasselt [25] have found evidence of obstruction to mucosal blood flow at a lateral wall pressure above 30 cmH20 with total occlusion of flow to the mucosa over the tracheal rings and posterior tracheal wall a lateral wall pressure of 50 cmH20 (37mmHg).…”

Section: Cuff Pressurementioning

confidence: 99%

“…When intracuff pressure in the low volume high pressure cuffed tubes was high and allowed to increase the advantage of decreased incidence of sore throat is lost [2]. Although the high volume cuffs caused a greater area of damage to the tracheal mucosa, the damage was more superficial than that caused by the high pressure cuffs [22]. Edward Loeser's study [23] showed that the foam filled cuffs had the highest cuff-tracheal contact area of any of the cuffs studied, and it was associated with the highest incidence and severity of postoperative sore throat.…”

Section: Low Pressure High Volume Cuff Tubes Verses High Pressure Lowmentioning

confidence: 99%

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Assessment of the efficacy of dexamethasone, lignocaine or placebo in the prevention of post intubation sore throat

Kadar¹

2015

Int Jour of Biomed Res

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Objective: To assess the incidence of sore throat and hoarseness caused by endotracheal intubation. To observe if lignocaine or dexamethasone throat spray would alter the incidence of sore throat Materials and methods: Adult patients of either sex who underwent general anaesthesia with endotracheal intubation were included in this randomised double blind study. Three hundred patients who had general anaesthesia with endotracheal intubation were randomly allocated into three groups -Group A, Group B and Group C following block randomisation. Nature of the study was explained to the patient and verbal consent obtained. Group A -2ml of dexamethasone (8mg) was sprayed Group B -2ml of 4% lignocaine was sprayed in this group. Group C -2ml of normal saline was used in this group. Postoperatively between 12-24 hours patients were invited to find out if any sore throat or hoarseness of voice was present. Verbal analogue scoring system was used. Results: Postoperatively sore throat was present in 26% in group A, 33% in group B and 28% in group C. Hoarseness was present in 20% in group A, 23% in group B and 18% in group C. Sore throat and hoarseness were present in 37% in group A, 45% in group B and 39% in group C. Conclusion: Neither dexamethasone nor lignocaine throat spray were useful in reducing postoperative sore throat and hoarseness.

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