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. 1999 Apr;120(4):474-8.
doi: 10.1053/hn.1999.v120.a91765.

Aspiration: cause and implications

D S Lundy  1 , C Smith, L Colangelo, P A Sullivan, J A Logemann, C L Lazarus, L A Newman, T Murry, L Lombard, J Gaziano
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Free article

Aspiration: cause and implications

D S Lundy et al. Otolaryngol Head Neck Surg. 1999 Apr.
Free article

Abstract

The purpose of this investigation was to determine the overall prevalence of aspiration in dysphagic individuals referred for a modified barium swallow and the underlying anatomic and/or physiologic causes. A total of 166 patients were seen during a 1-month period at 5 participating institutions. Aspiration was detected in 51.2% of the patients. The most common causes were decreased laryngeal elevation and delayed triggering of the pharyngeal motor response. A history of aspiration pneumonia was significantly associated with the presence of aspiration on modified barium swallow study. The presence of a protective cough was present in only 53% of patients who aspirated, reinforcing the need for appropriate radiologic assessment in patients with suspected dysphagia.

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