The Effect of Ultrasonographic Airway Measurements and Anatomical Differences on Laryngeal Mask Placement in Young and Older Adults

Inclusion Criteria: * Patient or legally appropriate representative/relative accepts participation as applicable. * Surgery suitable for LMA placement. * Age 18-40 years or \>65 years. Exclusion Criteria: * Pregnancy * Age \<18 years * History of upper airway surgery * Gastroesophageal reflux disease, ulcer, or gastrointestinal bleeding history * Inadequate fasting duration * Emergency surgery * Requirement for nasogastric tube placement * Unstable teeth * Mouth opening \<3 cm * Recent pulmonary infection * Recent upper airway infection * Pulmonary disease associated with increased airway pressures (cystic fibrosis, COPD, interstitial lung disease) * Restricted cervical movement / inability to achieve required extension * Ultrasound gel allergy * Refusal to participate