“…Similarly, iatrogenic manipulations such as tracheal intubation and respiratory infections may increase tissue inflammation and may complicate moderate symptoms [8,12,19]. Unilateral or bilateral vocal fold hypomobility or immobility has been reported in only 14 cases of HACO with dyspnea [7,9,10,22,[24][25][26]29]. The exact mechanism of vocal fold immobility remains unclear, although different hypotheses have been discussed: paresis of terminal laryngeal nerve fibers, trauma to the posteriorly located cricoarytenoid muscles (lateral and posterior), and direct involvement of the cricoarytenoid joint.…”