Abstract
The objective of the study was to investigate the influence of patient age on the efficacy of laryngeal reinnervation with ansa cervicalis in unilateral vocal fold paralysis (UVFP) patients. We retrospectively reviewed 349 consecutive UVFP cases of laryngeal reinnervation with ansa cervicalis to the recurrent laryngeal nerve anastomosis. Preoperative and postoperative videostroboscopy, perceptual evaluation, acoustic analysis, maximum phonation time (MPT) and laryngeal electromyography (EMG) data were collected. Gender, age, preoperative EMG status [preoperative voluntary motor unit recruitment (VMUR)] and denervation duration were analyzed in previous multivariable logistic regression analysis. Stratification analysis was performed on patient age in the present study. All patients were divided into four groups according to their age: Group A included patients with an age less than 30 years; Group B, 30–44 years; Group C, 45–59 years; Group D, ≥60 years. Stratification analysis on patient age showed significant differences between Group A and D, Group B and D, Group C and D (P < 0.05), but no significant difference between Group A and B, Group A and C, Group B and C (P > 0.05), respectively, with regard to parameters including glottal closure, overall grade, shimmer, noise-to-harmonics ratio; but there are no significant differences among the four groups with regard to jitter. However, for MPT and postoperative VMUR, there are significant differences among the four groups expect between Group A and B. In addition, glottal closure, perceptual and acoustic parameters, MPT values and VMUR data, were significantly improved postoperatively in each age group (P < 0.01). The data from this study indicate that patient age is an influential factor of the surgical outcome of laryngeal reinnervation for UVFP patients. Laryngeal reinnervation is less effective when patient age is more than 60 years.
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Acknowledgments
This work was supported by Grant Nos. 81170899, 81100724 for science research from National Natural Science Foundation of China.
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The authors have no other financial relationships, or conflict of interest to disclose.
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M. Li, D. Chen, and X. Song contributed equally to this research.
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Li, M., Chen, D., Song, X. et al. The effect of patient age on the success of laryngeal reinnervation. Eur Arch Otorhinolaryngol 271, 3241–3247 (2014). https://doi.org/10.1007/s00405-014-3091-6
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DOI: https://doi.org/10.1007/s00405-014-3091-6