Thursday, July 22, 2021

Effects of carbonation of liquids on penetration-aspiration and residue management

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Eur Arch Otorhinolaryngol. 2021 Jul 22. doi: 10.1007/s00405-021-06987-z. Online ahead of print.

ABSTRACT

OBJECTIVE: Carbonation as a sensory enhancement strategy for prevention of aspiration of thin liquids has not been thoroughly studied. The aim of our study was to examine the effect of carbonation on penetration-aspiration and pharyngeal residue in dysphagia patients using Fiber-Optic Endoscopic Evaluation of Swallowing (FEES) and to identify parameters associated with a response to carbonation.

METHODS: A cross-sectional study of patients undergoing FEES in a dysphagia clinic. Patients were offered 100 cc of dyed water. Penetration-aspiration was scored using the penetration-aspiration scale (PAS). Residue was scored using the Yale Pharyngeal Residue Severity Rating Scale (YPR-SRS). Patients with a PAS ≥ 2 for water were subsequently offered 100 cc of carbonated water. PAS, YPR-SRS and residue clearance were compared betwee n thin and carbonated liquids. Multivariate logistic regression analysis was used to identify predictors for good response to carbonation.

RESULTS: 84 patients were enrolled, 77.4% males, with diverse dysphagia etiologies (58.3% neurogenic, 11.9% radiation-induced, 23.8% deconditioning-induced, and 6% neck surgery induced). Median PAS was 7 (IQR 4-8) for thin liquids and 4.5 (IQR 2-8) for carbonated liquids (P = 0.0001). YPR-SRS was reduced for carbonated compared to thin liquids in the vallecula (1.58 ± 0.83 vs 1.76 ± 0.93, P = 0.001) and piriform sinuses (1.5 ± 0.87 vs 1.67 ± 0.9, P = 0.002). 31 patients had improvement in PAS with carbonation. Deconditioning as a dysphagia etiology was found to predict good response to carbonation on multivariate logistic regression analysis.

CONCLUSION: Carbonation may prevent aspiration and improve residue management for some patients with dysphagia for liquids.

LEVEL OF EVIDENCE: IV.

PMID:34292401 | DOI:10.1007/s00405-021-06987-z

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