Pittsburgh Vocal Cord Dysfunction Index
Distinguishing vocal cord dysfunction fromasthma can be difficult. The Pittsburgh Vocal Cord Dysfunction Index is a clinical tool to help prevent the misdiagnosis and mistreatment of vocal cord dysfunction as asthma.
Research authors: Traister RS, Fajt ML, Landsittl D, and Petrov AA.
Version: 1.12
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  • Pulmonology
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In the underlying study performed by Traister et al. (2015) in 148 patients, a cutoff score of 4 gave a sensitivity of 83%, a specificity of 95%, a positive predictive value of 96%, and a negative predictive value of 77% and, given the balance of sensitivity and specificity, was determined to be the best cutoff for distinguishing VCD from asthma. By using prediction profiling, a cutoff score of 4 would give a 77% probability of having VCD.

Reference:
Traister RS, Fajt ML, Landsittel D, Petrov AA. A novel scoring system to distinguish vocal cord dysfunction from asthma. J Allergy Clin Immunol Pract. 2014;2(1):65-9.
 

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