| Anaesthesia-related factors | Excessive cuff inflation, >60 cm H2O Malpositioning Traumatic Insertion Poor technique or unfamiliarity with new device Nitrous oxide use Failure to measure cuff pressure after insertion of device Inappropriate sizing of Supraglottic Airway Device |
| Patient related factors | Diabetes mellitus Collagen vascular disorders Peripheral vascular disorders |
| Surgery related factors
| Lateral position Extreme head rotation Prone position Prolonged duration |