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Does Cough Peak Flow Hold the Key to Safer Swallowing Assessments in Acute Brain Injury?
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Does Cough Peak Flow Hold the Key to Safer Swallowing Assessments in Acute Brain Injury?
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Journal Article
Does Cough Peak Flow Hold the Key to Safer Swallowing Assessments in Acute Brain Injury?
2025
Overview
Objective To examine the association between cough peak flow (CPF) and dysphagia risk in patients with acute brain injury. Design Observational, analytical, cross‐sectional study. Setting A university hospital located in the northeastern region of Brazil. Participants A sample of 108 adult patients diagnosed with acute brain injury (stroke or traumatic brain injury) was examined. The mean age of the participants was 53.4 ± 15.2 years, with 64% of the subjects being male. The patient’s swallowing assessments and CPF measurements were obtained during the patient’s stay in the hospital. Main Outcome Measures The severity of dysphagia risk was evaluated through the implementation of a bedside clinical swallowing protocol. The measurement of CPF was conducted by means of a portable peak expiratory flow meter. Logistic regression and receiver operating characteristic (ROC) curve analyses with bootstrap resampling were used to analyze the relationship between CPF and dysphagia risk. Additionally, secondary associations with age and body mass index were examined using the Spearman rank correlation test. Results Dysphagia risk was identified in 44% of patients. A cutoff value of 202 L/min on the CPF predicted dysphagia risk with 82% sensitivity and 83% specificity. A lack of statistically significant disparities in CPF was observed across different lesion types. The present study demonstrated a strong negative correlation between CPF and dysphagia risk (ρ = −0.791, p < 0.001). Conclusions The CPF demonstrated high sensitivity and specificity in identifying patients at dysphagia risk following acute brain injury. Its ease of use and noninvasive nature make it a promising adjunctive screening tool for clinical swallowing evaluations.
Publisher
John Wiley & Sons, Inc,Wiley
