The Usefulness of Supine Position on Swallowing of Liquid Diet in Neurogenic Dysphagia: Comparison with Sitting Position

ABSTRACT

OBJECTIVE: The purpose of this study is to find the proper feeding posture for the safe liquid meal in the patients with neurogenic dysphagia. METHOD: Fifty patients of neurogenic dysphagia with tracheal aspiration diagnosed with the videofluoroscopic swallowing test (VFST) were evaluated. VFST using 5 cc of barium solution was done for each patient in the sitting and supine position. The results of VFST of supine position were analyzed and compared with those of sitting position for the tracheal aspiration, laryngeal penetration, premature leakage, and laryngeal spillage. RESULTS: The incidence of premature leakage, tracheal aspiration, and laryngeal penetration is significantly decreased in the supine position (56%, 14% and 46%) compared to the sitting position (96%, 100% and 100%) (p<0.001). The incidence of laryngeal penetration referable to the swallowing reflex is significantly decreased in the supine position (0%, 46%, 0%) compared to the sitting position (14%, 96%, 44%) (p<0.001). The incidence of nasal regurgitation is 2% in the sitting position and 30% in the supine position. CONCLUSION: The incidence of tracheal aspiration of liquid diet is significantly decreased in the supine position compared to the sitting position. The supine position would be safer than the sitting position in the feeding of liquid diet.