Postoperative Sore Throat—Importance of Endotracheal Tube Conformity Versus Cuff Design

Laryngotracheal application of lidocaine spray increases the incidence of postoperative sore throat after total intravenous anesthesia

“…Several causal factors, such as sex, large tracheal tube size, cuff design, and increase of intracuff pressure by nitrous oxide have been reported [3][4][5][6][7][8][9]. Although laryngotracheal lidocaine spray is widely used before intubation in clinical practice, there are only a few studies evaluating its effect on postoperative sore throat and hoarseness, and the data are not consistent.…”

A prospective, randomized, double blind, placebo controlled clinical trial to study efficacy and safety of benzydamine 0.15% gargles in prevention of postoperative sore throat

“…With respect to the cuff type and design, tube size and tube type, several studies have reported. [7][8][9][10][11][12] Seegobin et al studied that the tracheal mucosa suffers ischemic changes with the type of cuff and the degree of pressure exerted on the lateral walls of the trachea. Hence a cautious recommendation was made that intracuff pressure should be maintained at <20mmHg Studies with different drugs to alleviate the incidence of sore throat post operatively have been done.…”

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

“…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.…”