Table 3.

Possible factors implicated in the development of postoperative sore throat with SGAs.

Factor	Mechanism
Insertion technique	Leading edge of deflated cuff may cause trauma Inflated cuff causes more epiglottic downfolding, which increases POST Repeated attempts are associated with increased POST
Size of device	Smaller sizes of SGAs are associated with less POST
Use of lubricants	Adequate lubrication is essential Lidocaine gel is associated with an increase in POST
Overinflation of the cuff	Some studies have shown decreased POST with intracuff pressure monitoring
Duration of surgery	Increased POST in operations of over 60 min duration
Airway gases	Lack of humidification can dry mucosal surfaces and increase POST