Systematic review and meta-analysis of the diagnostic accuracy of the water swallow test for screening aspiration in stroke patients.

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Systematic review and meta-analysis of the diagnostic accuracy of the water swallow test for screening aspiration in stroke patients.

J Adv Nurs. 2016 Nov;72(11):2575-2586

Authors: Chen PC, Chuang CH, Leong CP, Guo SE, Hsin YJ

Abstract
AIM: The aim of this study was to determine the diagnostic accuracy of the water swallow test for screening aspirations in stroke patients.
BACKGROUND: The water swallow test is a simple bedside screening tool for aspiration among stroke patients in nursing practice, but results from different studies have not been combined before.
DESIGN: A systematic review and meta-analysis was conducted to provide a synthetic and critical appraisal of the included studies.
DATA SOURCES: Electronic literature in MEDLINE, EMBASE, CINAHL and other sources were searched systemically in this study. Databases and registers were searched from inception up to 30 April 2015.
REVIEW METHODS: This systematic review was conducted using the recommendations from Cochrane Collaboration for Systematic Reviews of Diagnostic Test Accuracy. Bivariate random-effects models were used to estimate the diagnostic accuracy across those studies. The tool named Quality Assessment of Diagnostic Accuracy Studies (QUADAS-2) was used to evaluate the quality of the studies.
RESULTS: There were 770 stroke patients in the 11 studies for the meta-analysis. The water swallow test had sensitivities between 64-79% and specificities between 61-81%. Meta-regression analysis indicated that increasing water volume resulted in higher sensitivity but lower specificity of the water swallow test.
CONCLUSIONS: This systematic review showed that the water swallow test was a useful screening tool for aspiration among stroke patients. The test accuracy was related to the water volume and a 3-oz water swallow test was recommended for aspiration screening in stroke patients.

PMID: 27237447 [PubMed - indexed for MEDLINE]

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