Abstract：
RATIONALE AND OBJECTIVES:The authors evaluated the coordination of swallowing and respiration in dysphagic patients. MATERIALS AND METHODS:Video fluoroscopy and respirometry were performed simultaneously during 98 swallows in 33 patients (18 women, 15 men) with a median age of 70 years (interquartile range, 52-78 years). Pharyngeal transit time, deglutition apnea, and the ratio between the two (swallowing safety index) were calculated. Presence of a misdirected swallow (aspiration or penetration) was indicated. RESULTS:Pharyngeal transit time was not associated with deglutition apnea. Misdirected swallow was associated with a slightly prolonged pharyngeal transit time, a slightly shorter deglutition apnea, and a significantly lower swallowing safety index (1.8 [1.0-4.2] vs 4.5 [2.4-6.7]; P < .001) compared with normally directed swallow. The association between misdirected swallow and lower swallowing safety index was independent of pharyngeal transit time. CONCLUSION:Assessment of respiration is important in the evaluation of dysphagia. Aspiration, especially in elderly dysphagic patients, may be a consequence of primarily disturbed respiration. A low swallowing safety index may indicate risk of misdirected swallow.
journal_name
Acad Radioljournal_title
Academic radiologyauthors
Nilsson H,Ekberg O,Bülow M,Hindfelt Bdoi
10.1016/s1076-6332(97)80237-1subject
Has Abstractpub_date
1997-07-01 00:00:00pages
503-7issue
7eissn
1076-6332issn
1878-4046journal_volume
4pub_type
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