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Time Course of Recovery of Iatrogenic Vocal Fold Paralysis.
Laryngoscope 2019 May
OBJECTIVE: To clarify the time course of recovery in patients with iatrogenic vocal fold paralysis.
STUDY DESIGN: Retrospective chart review.
METHODS: Medical records for all patients with iatrogenic vocal fold paralysis over a 10-year period were reviewed to obtain demographic and clinical information, including onset of disease and recovery of vocal function. Stroboscopic exams of patients who recovered voice were reviewed blindly to assess return of vocal fold motion.
RESULTS: One hundred and two patients of 114 (89%) recovered vocal function. Time to recovery could be assessed in 39 patients who did not undergo injection augmentation. The mean time to recovery was 181.8 ± 109.3 days (left: 166.4 ± 106.7 days; right: 221.8 ± 115.6 days; P value = 0.095). Patients were analyzed according to anatomical site of surgery (skull base, carotid endarterectomy, thoracic, neck and intubation); there was no significant difference in time to recovery (P value = 0.60). Twelve of the 39 patients had recovery of vocal fold motion. The mean time to vocal recovery did not differ between patients with return of motion versus no return of motion (140.6 ± 118.0 days vs. 200.1 ± 102.2 days; P value = 0.147).
CONCLUSION: Age, gender, laterality, and anatomical site of injury do not influence recovery rate in iatrogenic vocal fold paralysis. The probability of recovery decreases over time but more slowly in comparison with idiopathic vocal fold paralysis, reflecting the greater heterogeneity of injury type in the iatrogenic population. Commonly available aggregate recovery rates overstate the potential for recovery.
LEVEL OF EVIDENCE: 4 Laryngoscope, 129:1159-1163, 2019.
STUDY DESIGN: Retrospective chart review.
METHODS: Medical records for all patients with iatrogenic vocal fold paralysis over a 10-year period were reviewed to obtain demographic and clinical information, including onset of disease and recovery of vocal function. Stroboscopic exams of patients who recovered voice were reviewed blindly to assess return of vocal fold motion.
RESULTS: One hundred and two patients of 114 (89%) recovered vocal function. Time to recovery could be assessed in 39 patients who did not undergo injection augmentation. The mean time to recovery was 181.8 ± 109.3 days (left: 166.4 ± 106.7 days; right: 221.8 ± 115.6 days; P value = 0.095). Patients were analyzed according to anatomical site of surgery (skull base, carotid endarterectomy, thoracic, neck and intubation); there was no significant difference in time to recovery (P value = 0.60). Twelve of the 39 patients had recovery of vocal fold motion. The mean time to vocal recovery did not differ between patients with return of motion versus no return of motion (140.6 ± 118.0 days vs. 200.1 ± 102.2 days; P value = 0.147).
CONCLUSION: Age, gender, laterality, and anatomical site of injury do not influence recovery rate in iatrogenic vocal fold paralysis. The probability of recovery decreases over time but more slowly in comparison with idiopathic vocal fold paralysis, reflecting the greater heterogeneity of injury type in the iatrogenic population. Commonly available aggregate recovery rates overstate the potential for recovery.
LEVEL OF EVIDENCE: 4 Laryngoscope, 129:1159-1163, 2019.
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