Definition Laryngospasm: Stimulation of vagus nerve during light anesthesia (Superior Laryngeal n, pharyngeal br of vagus, recurrent laryngeal below cords). Muscles involved: lateral cricoarytenoid, thyroarytenoids (both from recurrent laryngeal), crycrothyroid (from external branch of superior laryngeal). Causes: hypocalcemia, painful stimuli, vagal hypertonicity, foreign body. Airway Innvervation: The larynx is composed of nine cartilages, three paired and three unpaired and […]