J Stroke Cerebrovasc Dis. 2014 Sep;23(8):2047-53. doi: 10.1016/j.jstrokecerebrovasdis.2014.03.008.

Spontaneous swallow frequency compared with clinical screening in the identification of dysphagia in acute stroke.

Crary MA1, Carnaby GD2, Sia I3.
  • 1Swallowing Research Laboratory, Department of Speech, Language, and Hearing Science, University of Florida Health Science Center, Gainesville, Florida. Electronic address: mcrary@phhp.ufl.edu.
  • 2Swallowing Research Laboratory, Department of Behavioral Science and Community Health, University of Florida Health Science Center, Gainesville, Florida.
  • 3Swallowing Research Laboratory, Department of Speech, Language, and Hearing Science, University of Florida Health Science Center, Gainesville, Florida.

 

Abstract

BACKGROUND: The aim of this study was to compare spontaneous swallow frequency analysis (SFA) with clinical screening protocols for identification of dysphagia in acute stroke.

METHODS: In all, 62 patients with acute stroke were evaluated for spontaneous swallow frequency rates using a validated acoustic analysis technique. Independent of SFA, these same patients received a routine nurse-administered clinical dysphagia screening as part of standard stroke care. Both screening tools were compared against a validated clinical assessment of dysphagia for acute stroke. In addition, psychometric properties of SFA were compared against published, validated clinical screening protocols.

RESULTS: Spontaneous SFA differentiates patients with versus without dysphagia after acute stroke. Using a previously identified cut point based on swallows per minute, spontaneous SFA demonstrated superior ability to identify dysphagia cases compared with a nurse-administered clinical screening tool. In addition, spontaneous SFA demonstrated equal or superior psychometric properties to 4 validated, published clinical dysphagia screening tools.

CONCLUSIONS: Spontaneous SFA has high potential to identify dysphagia in acute stroke with psychometric properties equal or superior to clinical screening protocols.

KEYWORDS: Dysphagia; acute stroke; screening; swallow frequency

PMID: 25088166

 

 

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