Journal of Speech and Hearing Research Vol.38 556-563 June 1995.
© American Speech-Language-Hearing Association
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Effects of a Sour Bolus on Oropharyngeal Swallowing Measures in Patients With Neurogenic Dysphagia

Jeri A. Logemann 1
Barbara Roa Pauloski 1
Laura Colangelo 1
Cathy Lazarus 1
Masako Fujiu 1

Peter J. Kahrilas 2
1 Northwestern University Evanston, IL
2 Medical School Northwestern University Chicago, IL

This study examines the effects of a sour bolus (50% lemon juice, 50% barium liquid) on pharyngeal swallow measures in two groups of patients with neurogenic dysphagia. Group 1 consisted of 19 patients who had suffered at least one stroke. Group 2 consisted of 8 patients with dysphagia related to other neurogenic etiologies. All patients were selected because they exhibited delays in the onset of the oral swallow and delays in triggering the pharyngeal swallow on boluses of 1 ml and 3 ml liquid barium during videofluoroscopy. Results showed significant improvement in oral onset of the swallow in both groups of patients and a significant reduction in pharyngeal swallow delay in Group 1 patients and in frequency of aspiration in Group 2 patients with the sour as compared to the non-sour boluses. Other selected swallow measures in both subject groups also improved with the sour bolus. Volume effects were present but not as consistently as in prior studies. Implications for swallow therapy are discussed.

KEY WORDS: sour, neurogenic, swallowing, dysphagia, videofluorography

Submitted on August 17, 1994
Accepted on December 5, 1994


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