"Pre and Post Treatment Comparison of S/Z Ratio in Benign Laryngeal Lesions".

Autor: Prashanth KB; Department Of Otorhinolaryngology, JJM Medical College, Davangere, Karnataka India., Mathew RA; Department Of Otorhinolaryngology, JJM Medical College, Davangere, Karnataka India., Manjunatha HA; Department Of Otorhinolaryngology, JJM Medical College, Davangere, Karnataka India., Puneeth PJ; Department Of Otorhinolaryngology, JJM Medical College, Davangere, Karnataka India.
Jazyk: angličtina
Zdroj: Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India [Indian J Otolaryngol Head Neck Surg] 2024 Apr; Vol. 76 (2), pp. 1522-1525. Date of Electronic Publication: 2023 Nov 27.
DOI: 10.1007/s12070-023-04351-7
Abstrakt: Benign laryngeal lesions like vocal nodules, vocal polyp, vocal fold cysts are mostly found in patients complaining of change in voice. S/Z ratio has become the most frequently used clinical tool to assess phonatory mechanics. This study shows the pre-treatment and post-treatment comparison of S/Z ratios in patients with benign laryngeal lesions. To evaluate the outcome of microlaryngeal surgery in patients with benign laryngeal lesions using S/Z ratio as an outcome parameter. During this study, 65 patients with complaints of change in voice, with clinical evidence of benign laryngeal lesions underwent microlaryngeal surgery. Improvement in symptoms were measured preoperatively and postoperatively using S/Z ratio. This ratio was calculated by asking the patient to to maximally sustain 'S' and 'Z', repeated thrice. S/Z ratio was calculated by dividing the maximum duration for which /S/ was sustained by the maximum duration for which /Z/ was sustained. A ratio of more than 1.4 suggested a vocal cord disorder. There was statistically significant difference observed in S/Z ratio values, from pre-treatment to 6 months post-treatment, with P value 0.001. Pre and post treatment assessment of patients with benign vocal fold lesions showed significant improvement in S/Z ratio postoperatively. It is the simplest and a reliable objective method of voice assessment and can also be used in assessing the outcome of the treatment.
Competing Interests: Conflict of interestThe authors declare that there is no conflict of interest.
(© Association of Otolaryngologists of India 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.)
Databáze: MEDLINE
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