Edition V01N1  |  Year 2022  |  Category: Research Article  |  Page 136 to 143


Nina Raisa Miranda BROCK, Evaldo Dacheux de MACEDO FILHO, Jorge Massaki IDO FILHO, Guilherme Simas do Amaral CATANI


Several types of laser have been used in the larynx. A diode laser is a portable and relatively cheap device. Thus, this paper aims to report the experience with the use of diode laser in laryngeal microsurgeries, through the analysis of electronic medical records of 37 patients who underwent laryngeal microsurgery from January to June 2014. It was noted that the main indication for the surgery was in women, aged 50-60 years, the vast majority with a diagnostic hypothesis of vocal polyp. The optical fiber used was 400µm (micrometer), with a power of 3W, with pulsed emission mode, a pulse width of 20PPS, and a frequency of 25 milliseconds.The application time for the resection of the lesions was an average of 86 seconds, using an energy of 132 joules. Laryngeal microsurgery using the diode laser technique presented advantages, due to the ease of handling the equipment, safety during its use, and skillful surgical time, without the occurrence of any complications during its application in the vocal folds.
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Larynx, Diode laser, Laryngeal microsurgery, Dysphonia

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Endolymphatic hydrops (EH) results from increased endolymph volume in the inner ear, which leads to episodic vertigo, ear fullness, and sensorineural hearing loss. In these patients, Vestibular Evoked Myogenic Potential (VEMP) examination has high sensitivity and specificity for diagnosis. These patients have also been suggested to have frequency-specific changes in otoacoustic emissions (OAE). The aim of this study is to evaluate the result of the OAE examination in patients with altered VEMP and clinical history compatible with EH. The medical records and exams of 107 patients with previous diagnosis of EH were retrospectively analyzed. The results of OAE were studied for their validation in the diagnosis of patients with EH. The results showed that 98.1% of the evaluated patients presented at least one OAE frequency with no response in low or high, with a 95% confidence interval of 95.6% to 100%. When comparing the cases with normal and altered audiometry, there was a significant difference regarding the left side (p=0.041), right (p<0.001) and left (p=0.001), low (p=0.006) and high (p<0.001). Overall, a trend towards significant difference was observed (p=0.077). It is concluded that there is a significant alteration in the OAE of patients with EH, showing that such exam has the potential for diagnosis and follow-up.

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