• Proceedings of the KSLP Conference
• /
• 1993.12a
• /
• pp.16-16
• /
• 1993

성대의 bowing은 성대근의 위축, 노화, 상후두신경마비, 성대수술후, 성대구 등의 원인에 의하여 발생할 수 있으며, 대부분의 예에서 경도의 애성을 호소할 뿐만 아니라 아직 효과적인 치료법이 없기 때문에 적극적인 치료를 받지 못하고 장기간 애성을 호소하는 경우가 많다. 저자들은 성대의 bowing의 진단 및 치료에 도움을 얻고자 최근 2 년간 애성을 주소로 내원한 환자중 성대의 bowing을 보였던 25례(성대구 3례, 성대위축증 2례)을 대상으로 치료전ㆍ후의 음성기능을 분석하여 문헌고찰과 함께 보고하고자 한다.

• Proceedings of the KSLP Conference
• /
• 2011.03a
• /
• pp.16-16
• /
• 2011

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
• /
• v.8 no.1
• /
• pp.75-81
• /
• 1997

The clinical investigation was done in the 42 patients with bilateral vocal cord palsy who visited the otorhinolaryngologic department of the Yongdong Severance Hospital during the 10-year period between August 1986 to August 1996. On the sex and age distribution, the ratio of male to female patients was 2.8 : 1 and the age was evenly distributed and average was 46 years old. Of their chief complaints, dyspnea was the most common symptom. Among the position of the paralyzed vocal cords, paramedian position was most common. The most common causes of the bilateral vocal cord palsy was idiopathic Other causes include iatrogenic, prolonged intubation, head ＆ neck trauma, brain tumor, Myasthenia Gravis, and mediastinitis. Our treament results were as follows. Recovery rate of idiopathic bilateral vocal cord palsy was 77.7% and recovery period after bilateral vocal cord palsy was shortened remarkedly after use with steroid. We performed laser arytenoidectomy in patients with irreversible idiopathic vocal cord palsy, neural injury, and cricoarytenoid joint fixation. Decannualtion was possible to be carried out in 86% of the patients and none of complication except for 1 case of aspiration developed. Thus we concluded that it was meaningful surgical treatment of bilateral vocal cord palsy.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
• /
• v.31 no.2
• /
• pp.56-60
• /
• 2020

Vocal fold injections are usually performed with a patient wake in an office under local anesthesia. For comfortable and safe office-based procedures, thorough anesthesia and premedication should be provided to the following three regions; nasal cavity, oropharynx, and larynx. Topical lidocaine is most widely used anesthetics on office based procedure. Lidocaine has a low to intermediate potency, 45 minutes to 60 minutes' duration of action, and onset of sufficient anesthesia within 90 seconds of topical administration. Tetracaine, prilocaine, ropivacaine, and bupivacaine also have been used in the office-based procedures. Nasal decongestant, oxymetazoline, is also used for widening nasal cavity by constriction of nasal mucosa. The amount of topical and local anesthetics used in vocal fold injection rarely exceeds toxic doses. The physician should know proper anesthesia techniques and must be familiar with the safe dose and complication of all anesthetics used.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.35 no.2B
• /
• pp.191-196
• /
• 2010

To increase heart disease by smoking, diabetes, obesity, stress, etc. is caused by death rate so heart disease has proposed early diagnosis necessity in modem society. Especially, incidence is on the increase rapidly because of ignorance and indifference of people about heart disease. Therefore to solve a social phenomenon about heart disease, this paper would like to design objective output parameter necessary early diagnosis of heart disease based on diagnosis theory about heart condition in the proposed Donguibogam. Specially to prove inaccurate pronunciation by heart disease would like to perform comparison, analysis of experimental group to extract vibration change rate of the vocal cords. This paper is comprised of heart disease patient and healthy people group in adult man speak to standard language then I'd like to propose early diagnosis about heart disease through comparison, analysis of vibration change rate of the vocal cords by acquisition of these voice.

• Proceedings of the KOR-BRONCHOESO Conference
• /
• 1993.05a
• /
• pp.74-74
• /
• 1993

Unilateral vocal cord paralysis is induced by various causes and its effective treatment has been diversely searched out until now. Currently used treatment modalities are intracordal injection of exogenous materials such as Teflon or Silicone, and thyroplasty and so forth. But, with the above mentioned modalities, it has been not satisfactory to obtain a good postoperative results especially in cases when the glottal incompetence is very severe or the level difference between the vocal cords is large. In such cases, vocal cord adduction can be accomplished by anteromedial traction of the muscular process of paralyzed vocal cord via surgical exposure resulting improvement of voice quality. Recently, authors performed arytenoid adduction in 3 cases of unilateral vocal cord paralysis to obtain a better improvement of voice quality, and experienced satisfiable postoperative results.

• Proceedings of the KIEE Conference
• /
• 2007.10a
• /
• pp.475-476
• /
• 2007

Electroglottography (EGG) is a technique used to register laryngeal behavior indirectly by a measuring the change in electrical impedance across the throat during speaking. However, EGG waveform is affected by laryngeal muscles which fluctuate the vocal cords, and which result in baseline wander. It is required to reduce baseline wander in EGG waveform, because EGG waveform is used for input signal of nonlinear speech synthesizer in next chapter. In vocal cords, the abduction-adduction of glottis is mainly controlled by the posterior cricoarytenoid (abductor) and interarytenoid (adductor) muscles respectively. Empirical Mode Decomposition method was adopted in cancellation of EGG waveform baseline wandering, and showd better performance than that of high pass filter with 500 order.

• Archives of Craniofacial Surgery
• /
• v.24 no.2
• /
• pp.87-90
• /
• 2023

Endotracheal intubation is often necessary in the course of animal experiments, especially in craniofacial surgery. However, endotracheal intubation can be a major burden in this context. The authors performed simple and cost-saving method using a 200 µL yellow micropipette tip, and the success of this method was demonstrated by X-ray and autopsy. We used a total of 30 rats. After the rats were fixed with a plaster, the trachea and vocal cords were visualized with the tongue pulled back. Under direct visualization of the vocal cords, a curving micropipette tip was advanced into the trachea. This method can be learned quickly and applied successfully by general experimenters. We successfully intubated all 30 rats without any complications. The success rate of micropipette tip intubation was 100%. This procedure was performed by one experimenter within 2 to 3 minutes after induction of anesthesia. We demonstrated its superiority by X-ray and autopsy. Herein, we describe endotracheal intubation of rats using micropipette tips. To the best of our knowledge, this method is novel and represents the simplest and most efficient means of intubation in rats, providing an alternative to conventional endotracheal intubation.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
• /
• v.25 no.1
• /
• pp.36-38
• /
• 2014

The patient suffered cardiac arrest 8 months before presentation. She has been suffering hoarseness and exertional dyspnea and nocturnal stridor. Upon flexible laryngoscopy, her vocal cords showed no motion and fixed in paramedian position. There was no causal finding on neck CT. EMG showed some muscular activity. Under the suspicion of crico arytenoid fixation, we performed suspension laryngoscopy, and found the arytenoid cartilage was fixed with short and stout scar, which was removed with scissors. Just after surgery she regained her voice and respiration.

• Korean Journal of Head & Neck Oncology
• /
• v.34 no.2
• /
• pp.39-41
• /
• 2018

Primary laryngeal candidiasis is rare in immunocompetent patients and is prone to confusion with early glottic carcinoma or leukemia. We experienced a case of 74-year-old man who has 3- month history of hoarseness. The pathologic diagnosis was laryngeal candidiasis. He was treated with antifungal agents for 4 weeks after vocal cord stripping under general anesthesia. After treatment, the patient had no candidiasis or discomfort with his voice. We report this case with a review of literature.