• Title/Summary/Keyword: 후두내시경

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A Case of Huge Vocal Polyp in a Patient With Difficult Laryngeal Exposure Treated by Fiberoptic Laryngeal Laser Surgery Under Local Anesthesia (전신마취 하 후두미세수술이 불가능한 경추 손상 환자에게서 국소마취 하 굴곡내시경 후두 레이저 수술로 치료한 거대한 성대 폴립 1예)

  • An, You Young;Lee, Jeong Hyun;Park, Ki Nam;Lee, Seung Won
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.32 no.3
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    • pp.153-156
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    • 2021
  • Indications of fiberoptic laryngeal laser surgery (FLS) procedure have broadened by the development of flexible fiberoptic endoscopes and flexible laser systems. FLS procedure performed under local anesthesia and it is the unique value of FLS. The surgery can be performed on patients who are impossible to undergo general anesthesia and difficult to be exposed by laryngeal microsurgery. Main indication of FLS procedure was small to moderate sized hemorrhagic vocal polyp, but we experienced a case of huge vocal polyp with difficult laryngeal exposure treated by FLS procedure under local anesthesia. The vocal polyp was removed successfully without vocal fold scar through fiberoptic laryngeal laser surgery under local anesthesia.

Diagnostic Role of Stroboscopy (후두 내시경의 진단적 역할)

  • Lee, Sang-Hyuk
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.21 no.1
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    • pp.13-16
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    • 2010
  • Diagnosis of a patient with dysphonia begins with a thorough history and physical examination. Larynx can be visualized either indirectly or directly with a rigid or flexible laryngoscope. One notable limitation of simple indirect laryngoscopy is that the examination dose not yields a recordable and reproducible image of the larynx and vocal tract. And unaided human eye is unable to visualize the vibratory patterns of the true vocal cord during phonantion. When available, stroboscopy provides useful information regarding vocal told closure, vibration, and mucosal wave which is useful to decide between microsurgery, vocal reeducation or a combined treatment Even there are some limitations, recognition of the advantages and disadvantages of stroboscopy allows for optimal appreciation and stroboscopy remains an essential diagnostic tool in the assessment of dysphonia.

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LYRYNGEAL ADJUSTMENTS FOR KOREAN CONSONANTS (한국어 파열음에 대한 후두내근의 역할)

  • ;H. Hirose
    • Proceedings of the KOR-BRONCHOESO Conference
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    • 1991.06a
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    • pp.15-15
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    • 1991
  • 한국어 자음에 대한 생리적인 분류는 조음점 및 조음발법에 따라 다시 세분화할 수 있는데 그중에서 조음발법에 따라 파열음, 마찰음, 파찰음 및 비음들 여러가지로 분류할 수 있다. 그중 특히 파열음은 그 개방하는 방법에 따라 연음(lenis), 경음(glottalized) 및 기식음(aspirated)등으로 구분하는데 이러한 각음을 육안으로 확인하면 모음이 발성되기 위한 성대진동이 있기전의 자음을 위한 성대의 운동의 현상을 보면 기식음에서는 성대열림이 가장 크고 연음에서도 열림이 크지만 기식음보다는 적고 경음에서는 성대의 열림이 가장 작았다. 이러한 현상은 후두내시경에 의해 쉽게 확인할 수 있었는데 이것을 과학적으로 규명하기 위해서는 여러연구에 의해 가능하나 흔히 후두근전도 검사에 의한 성대내전근과 외전근의 역할의 차이를 비교함으로서 가능해지리라 예상되어 본 연구를 시행하였다. 사용된 문형 또는 단어는 한가지를 제외하고는 모두 의미있는 단어를 사용하였으며 EMG recording을 위해 사용된 근육은 후두내전근인 Vocalis muscle과 후두외전근인 Posterior cricoarytenoid muscle이 사용되었고 전기신호는 computer data processing system에 의해 분석되어졌다. 결과는 내시경에 의한 성대열림의 거리측정 결과를 분석함과 동시에 후두내근에 대한 근전도검사에 의한 분석을 토대로 하였으며 이를 간단히 설명하면 이제까지 많은 사람들은 한국어 자음에 대한 각각의 특징적인 현상들을 주로 성대내전근의 역할에 의해 규명하였으나 본 결과로는 성대내전근의 역할도 중요하지만 성대외전근의 역할 또한 상호 연관성을 가지면서 매우 중요한 역할을 한다는 점이다.for the Isotropic plates can be used. Use of some coefficients can produce "exact" value for laminates with such configuration.trap with 2.88[eV] deep of injected space charge from the chathode in the crystaline regions. The origin of ${\alpha}$$_2$ peak was regarded as the detrapping process of ions trapped with 0.9[eV] deep originated from impurity-ion remained in the specimen during production process of the material, in the crystalline regions. The origin of ${\beta}$ peak was concluded to be due to the depolarization process of "C=0"dipole with the activation energy of 0.75[eV] in the amorphous regions. The origin of ${\gamma}$ peak was responsible to the process combined with the depolarization of "CH$_3$", chain segment, with the activation energy of carriers from the shallo

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A Case of Paradoxical Vocal Fold Movement Due to Psychological Causes (정신적 요인에 의한 역설적 성대운동 1예)

  • Shin, Dong Min;Park, Gi Cheol
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.32 no.3
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    • pp.142-145
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    • 2021
  • Paradoxical vocal fold movement (PVFM) is a dystonic laryngeal disorder characterized by involuntary vocal fold adduction during inspiration and/or expiration. PVFM is uncommon and may aggravate airway obstruction. And patients with PVFM have a specific etiology; therefore, treatment must be individualized and given immediately. We present a case of 63-year-old male presenting with intermittent dyspnea. After multidisciplinary workup, we presumed psychogenic PVFM and evaluated with speech-language pathologist and psychologist. In this report, we describe a rare case of psychogenic PVFM patient.

Dysphonia : Vocal Fold Mucosal Lesions Easily Missed in Laryngoscopy (발성장애: 후두내시경 검사에서 놓치기 쉬운 성대점막질환)

  • Kim, Han-Su
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.21 no.1
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    • pp.17-21
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    • 2010
  • Dysphonia is a medical terminology for voice disorders characterized by hoarseness, harshness, weakness, or even loss of voice ; any impairment in ability to produce voice sounds using the vocal organs, larynx, The causes of dysphonia can be classified into two groups, organic and functional. Functional dysphonia includes spasmodic dysphonia, muscle tension dysphonia, mutational dysphonia and conversion dysphonia, etc, The findings of laryngoscopy in these dysphonia are almost normal. Therefore, physicians should diagnosis these diseases from careful history taking and abundant understandings about the phonation pattern, Organic dysphonia is caused by anatomical problems in the larynx, especially on the vocal fold, Some lesions, however, are not easily found because these lesions are too small, or located on the lower lip of vibrating vocal fold. Laryngopharyngeal reflux induced laryngitis, vascular lesions, sulcus vocalis, vocal atropy including presbylaryngis, and mucosal tears are common lesions easily missed in laryngoscopy, Therefore, a high index of suspicion is necessary to avoid missing vocal fold mucosal lesions, and the strobovideolaryngoscopy is indispensable in making the diagnosis,

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A Case of Congenital Laryngeal Atresia with Single Umbilical Artery Who Required a Tracheotomy (기관절개술을 받았던 단일 제대동맥이 동반된 선천성 후두폐쇄증 1례)

  • Wi, Ho Sung;Baek, Hey Sung;Oh, Jae Won;Yum, Myung-Kul;Kim, Yong Joo;Moon, Soo Jee;Tae, Kyung;Kim, Chang-Ryul
    • Clinical and Experimental Pediatrics
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    • v.48 no.5
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    • pp.557-560
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    • 2005
  • Congenital laryngeal atresia is a rare cause of airway obstruction that is almost always lethal within a few minutes after birth. Therefore congenital laryngeal atresia should be diagnosed in the prenatal period. If not, it should be considered in newborn infant with life-threatening symptoms at birth such as cyanosis and dyspnea that need emergent procedures like a tracheotomy. We report a case of congenital laryngeal atresia with single umbilical artery diagnosed in a one-day-old neonate who required a tracheotomy and ventilator care after intubation failure.

The Changes of Reflux Symptoms and Laryngoscopic Findings in Treatment of Patients with Laryngopharyngeal Reflux (인후두 역류증의 치료 시 증상과 후두내시경 소견의 변화)

  • Tae, Kyung;Lee, Yong-Seop;Jeong, Jin-Hyeok;Park, In-Beom;Lee, Seung-Hwan;Kim, Kyung-Rae
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.16 no.1
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    • pp.15-18
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    • 2005
  • Background and Objectives : To determine the changes of reflux symptoms and laryngoscopic findings of patients with laryngopharyngeal reflux (LPR) on the duration of proton pump inhibitor medication. Materials and Methods : From Feb 2003 to Nov 2004, 58 patients who were diagnosed with LPR by 24-hour double-probe pH monitoring were enrolled. All patients were treated with proton pump inhibitor and followed up for 8 weeks at least. The response of symptoms and laryngoscopic findings of patients were assessed with reflux symptom index (RSI) and reflux finding score (RFS) before treatment and 2, 4, 8, 12, 16, 20 weeks after treatment. Results : The symptoms of patients with LPR were improved significantly at 2, 4, 8 weeks of treatment. The laryngoscopic findings of patients with LPR were improved significantly at 4 and 12 weeks of treatment. There was no correlation between improvement of reflux symptoms and laryngoscopic findings. Conclusions : The laryngoscopic findings of LPR patients were improved more slowly than reflux symptoms. Based on our results, anti-reflux therapy might be continued at least for 3 months until the improvement of laryngoscopic findings.

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Commercially Available High-Speed Cameras Connected with a Laryngoscope for Capturing the Laryngeal Images (상용화 된 고속카메라와 후두내시경을 이용한 성대촬영 방법의 소개)

  • Nam, Do-Hyun;Choi, Hong-Shik
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.21 no.2
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    • pp.133-138
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    • 2010
  • Background and Objectives : High-speed imaging can be useful in studies of linguistic and artistic singing styles, and laryngeal examination of patients with voice disorders, particularly in irregular vocal fold vibrations. In this study, we introduce new laryngeal imaging systems which are commercially available high speed cameras connected with a laryngoscope. Materials and Method : The laryngeal images were captured from three different types of cameras. First, the adapter was made to connect with laryngoscope and Casio EX-F1 to capture the images using $2{\times}150$ Watt Halogen light source (EndoSTROB) at speeds of 1,200 tps (frame per second)($336{\times}96$). Second, Phantom Miro ex4 was used to capture the digital laryngeal images using Xenon Nova light source 175 Watt (STORZ) at speeds of 1,920 fps ($512{\times}384$). Finally, laryngeal images were captured using MotionXtra N-4 with 250 Watt halogen lamp (Olympus CLH-250) light source at speeds of 2,000tps ($384{\times}400$) by connecting with laryngoscope. All images were transformed into the Kymograph using KIPS (Kay's image processing Software) of Kay Pentex Inc. Results: Casio EX-F1 was too small to adjust the focus and screen size was diminished once the images were captured despite of high resolution images. High quality of color images could be obtained with Phantom Miro ex4 whereas good black and white images from Motion Xtra N-4 Despite of some limitations of illumination problems, limited recording time capacity, and time consuming procedures in Phantom Miro ex4 and Motion Xtra N-4, those portable devices provided high resolution images. Conclusion : All those high speed cameras could capture the laryngeal images by connecting with laryngoscope. High resolution images were able to be captured at the fixed position under the good lightness. Accordingly, these techniques could be applicable to observe the vocal fold vibration properties in the clinical practice.

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Experimental Phonetic Study of Kyungsang and Cholla Dialect Using Power Spectrum and Laryngeal Fiberscope (파워스펙트럼 및 후두내시경을 이용한 방언 음성(方言 音聲)의 실험적 연구(實驗的 硏究): 경상방언 및 전라방언을 중심으로)

  • Kim, Hyun-Gi;Lee, Eung-Young;Hong, Ki-Hwan
    • Speech Sciences
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    • v.9 no.2
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    • pp.25-47
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    • 2002
  • Human language activity in the information society has been developing the communication system between humans and machines. The aim of this study was to analyze dialectal speech in Korea. One hundred Kyungsang and one hundred Cholla informants participated in this study. A CSL and Flexible laryngeal fiberscope were used for analysis of the acoustic and glottal gestures of all the vowels and consonants. Test words were made on the picture cards and letter cards which contained each vowel and each consonant, respectively. The dialogue between the examiner and the informants was recorded in a question and answer manner. The acoustic results of two dialects were as follows: Kyungsang and Cholla informants showed neutralization between /e/ and /$\varepsilon$. However, the apertures of Kyungsang vowels /i, w, u, o/ were higher than those of Cholla vowels. The /wi/ and /$\varepsilon$/ of Kyungsang Diphthong vowels were shown as simple vowels /i/ and /$\varepsilon$/ in Cholla dialect. The VOT of Cholla dilaect was longer than that of Kyungsang dialect. The fricative frequence of Kyurlgsang dialect was about 1000Hz higher than that of Cholla dialect. The glottal widths on fiberscopic images showed that the consonant durations of Kyungsang and Cholla dialects were correlated all together with the acoustic duration on the spectrogram.

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