The benefit of head rotation on pharyngoesophageal dysphagia.

摘要: This study examined the effect of head rotation on mechanics swallowing in healthy subjects, as well effects this postural change oropharyngeal swallow five patients with lateral medullary syndrome (LMS). Videofluoroscopic studies normal subjects revealed that to either side increased upper esophageal sphincter (UES) opening diameter by an average 2mm without affecting period UES or transit time. Maximal right left caused bolus lateralize away from direction rotation, and also a significant (18mmHg 35%) fall pressure. In face forward position, LMS exhibited barium residue pharynx pyriform sinuses, diminished diameter. The fraction swallowed significantly turned toward paretic patients. We conclude can improve unilateral dysphagia. Two potentially beneficial were observed: (1) functional exclusion relatively flaccid, weakened pharyngeal wall, (2) reduced tone. Which these mechanisms is operative probably depends dominant individuals substantial impairment opening, turning reduces resistance must be overcome contraction. flaccid hemipharynx, which dissipates pressure, excludes structures path allows pressure directed at UES.