Justin R Shinn1, Kyle S Kimura1, Benjamin R Campbell1, Anne Sun Lowery2, Christopher T Wootten1,3, C Gaelyn Garrett1,4, David O Francis5, Alexander T Hillel6, Liping Du7, Jonathan D Casey8, E Wesley Ely7,9,10, Alexander Gelbard1,4. 1. Department of Otolaryngology, Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, TN. 2. Vanderbilt University School of Medicine, Nashville, TN. 3. Department of Pediatric Otolaryngology, Vanderbilt University Medical Center, Nashville, TN. 4. Division of Laryngology, Vanderbilt University Medical Center, Nashville, TN. 5. Division of Otolaryngology - Head and Neck Surgery, University of Wisconsin-Madison, Madison, WI. 6. Department of Otolaryngology - Head and Neck Surgery, Johns Hopkins Hospital, Baltimore, MD. 7. Center for Quantitative Sciences, Department of Biostatistics, Vanderbilt University, Nashville, TN. 8. Division of Allergy, Pulmonary, and Critical Care, Vanderbilt University Medical Center, Nashville, TN. 9. Tennessee Valley Veteran's Affairs Geriatric Research Education Clinical Center (GRECC), Nashville, TN. 10. Critical Illness, Brain Dysfunction, and Survivorship (CIBS) Center, Vanderbilt University Medical Center, Nashville, TN.
Abstract
OBJECTIVES: Upper airway injury is a recognized complication of prolonged endotracheal intubation, yet little attention has been paid to the consequences of laryngeal injury and functional impact. The purpose of our study was to prospectively define the incidence of acute laryngeal injury and investigate the impact of injury on breathing and voice outcomes. DESIGN: Prospective cohort study. SETTING: Tertiary referral critical care center. PATIENTS: Consecutive adult patients intubated greater than 12 hours in the medical ICU from August 2017 to May 2018 who underwent laryngoscopy within 36 hours of extubation. INTERVENTIONS: Laryngoscopy following endotracheal intubation. MEASUREMENTS AND MAIN RESULTS: One hundred consecutive patients (62% male; median age, 58.5 yr) underwent endoscopic examination after extubation. Acute laryngeal injury (i.e., mucosal ulceration or granulation tissue in the larynx) was present in 57 patients (57%). Patients with laryngeal injury had significantly worse patient-reported breathing (Clinical Chronic Obstructive Pulmonary Disease Questionnaire: median, 1.05; interquartile range, 0.48-2.10) and vocal symptoms (Voice Handicap Index-10: median, 2; interquartile range, 0-6) compared with patients without injury (Clinical Chronic Obstructive Pulmonary Disease Questionnaire: median, 0.20; interquartile range, 0-0.80; p < 0.001; and Voice Handicap Index-10: median, 0; interquartile range, 0-1; p = 0.005). Multivariable logistic regression independently associated diabetes, body habitus, and endotracheal tube size greater than 7.0 with the development of laryngeal injury. CONCLUSIONS: Acute laryngeal injury occurs in more than half of patients who receive mechanical ventilation and is associated with significantly worse breathing and voicing 10 weeks after extubation. An endotracheal tube greater than size 7.0, diabetes, and larger body habitus may predispose to injury. Our results suggest that acute laryngeal injury impacts functional recovery from critical illness.
OBJECTIVES: Upper airway injury is a recognized complication of prolonged endotracheal intubation, yet little attention has been paid to the consequences of laryngeal injury and functional impact. The purpose of our study was to prospectively define the incidence of acute laryngeal injury and investigate the impact of injury on breathing and voice outcomes. DESIGN: Prospective cohort study. SETTING: Tertiary referral critical care center. PATIENTS: Consecutive adult patients intubated greater than 12 hours in the medical ICU from August 2017 to May 2018 who underwent laryngoscopy within 36 hours of extubation. INTERVENTIONS: Laryngoscopy following endotracheal intubation. MEASUREMENTS AND MAIN RESULTS: One hundred consecutive patients (62% male; median age, 58.5 yr) underwent endoscopic examination after extubation. Acute laryngeal injury (i.e., mucosal ulceration or granulation tissue in the larynx) was present in 57 patients (57%). Patients with laryngeal injury had significantly worse patient-reported breathing (Clinical Chronic Obstructive Pulmonary Disease Questionnaire: median, 1.05; interquartile range, 0.48-2.10) and vocal symptoms (Voice Handicap Index-10: median, 2; interquartile range, 0-6) compared with patients without injury (Clinical Chronic Obstructive Pulmonary Disease Questionnaire: median, 0.20; interquartile range, 0-0.80; p < 0.001; and Voice Handicap Index-10: median, 0; interquartile range, 0-1; p = 0.005). Multivariable logistic regression independently associated diabetes, body habitus, and endotracheal tube size greater than 7.0 with the development of laryngeal injury. CONCLUSIONS: Acute laryngeal injury occurs in more than half of patients who receive mechanical ventilation and is associated with significantly worse breathing and voicing 10 weeks after extubation. An endotracheal tube greater than size 7.0, diabetes, and larger body habitus may predispose to injury. Our results suggest that acute laryngeal injury impacts functional recovery from critical illness.
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