Cuff Leak Volume As a Clinical Predictor for Identifying Post-Extubation Stridor
Warangkana Keeratichananont MD*, Teeranan Limthong MD*, Suriya Keeratichananont MD**
Affiliation : * Division of Respiratory and Respiratory Critical Care Medicine, Department of Internal Medicine, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand ** Division of Gastroenterology, Department of Internal Medicine, Bangkok Hat Yai Hospital, Songkhla, Thailand
Background : Post-extubation stridor occurs after translaryngeal intubation results to re-intubation in a number of
patients.
Objective : To determine the cut-off value of the cuff leak volume test among Thai patients as a predictor for post-extubation
stridor.
Material and Method: Demographic data and cuff leak volume were collected from patients who had been intubated with
planned extubation. Clinical stridor was observed and identifi ed after extubation.
Results : Among 115 patients, the cuff leak volume of less than 114 ml was used to predict post-extubation stridor with the
sensitivity of 89%, specifi city of 90%, positive predictive value of 65%, and negative predictive value of 98%, respectively.
Among the stridor group, 12 of 19 cases (63.2%) needed re-intubation.
Conclusion : The cuff leak volume of less than 114 ml can be used as a clinical predictor for identifying post-extubation
stridor.
Keywords : Cuff leak volume, Laryngeal edema, Clinical predictor, Post-extubation stridor
