Korean journal of audiology最新文献

{"title":"Benign paroxysmal positional vertigo with simultaneous involvement of multiple semicircular canals.","authors":"Dae Bo Shim,&nbsp;Chang Eun Song,&nbsp;Eun Jung Jung,&nbsp;Kyung Min Ko,&nbsp;Jin Woo Park,&nbsp;Mee Hyun Song","doi":"10.7874/kja.2014.18.3.126","DOIUrl":"https://doi.org/10.7874/kja.2014.18.3.126","url":null,"abstract":"<p><strong>Background and objectives: </strong>Benign paroxysmal positional vertigo (BPPV) generally involves a single semicircular canal (single canal BPPV) but it has been reported that more than one semicircular canal on either the same or the opposite side can be involved in 6.8-20% of the cases (multiple canal BPPV). In this study, the clinical characteristics of multiple canal BPPV were analyzed and compared to those of single canal BPPV.</p><p><strong>Materials and methods: </strong>Retrospective analysis was performed on 1054 consecutive patients diagnosed with BPPV. Multiple canal BPPV was diagnosed when the combination of typical nystagmus was provoked by the Dix-Hallpike and supine head roll tests. Canalith repositioning maneuver was performed sequentially starting with the semicircular canal causing more severe nystagmus or symptoms. Clinical characteristics and the treatment course were statistically compared between single canal BPPV and multiple canal BPPV.</p><p><strong>Results: </strong>Among the 1054 patients, single canal BPPV was diagnosed in 1005 patients (95.4%) while multiple canal BPPV was diagnosed in 49 patients (4.6%). BPPV involving semicircular canals on the same side was more common (79.6%) than BPPV with bilateral involvement. The most common combination of the involved canals was ipsilateral posterior and horizontal semicircular canals (63.3%). Multiple canal BPPV was significantly more associated with underlying otologic diseases, especially labyrinthitis. Multiple canal BPPV required more treatment sessions and longer duration of treatment to achieve resolution of nystagmus and symptoms.</p><p><strong>Conclusions: </strong>As all cases of multiple canal BPPV were treated successfully although a longer duration of treatment and more treatment sessions were required compared to single canal BPPV, the results of our study could aid in making an accurate diagnosis and providing appropriate treatment of multiple canal BPPV.</p>","PeriodicalId":90252,"journal":{"name":"Korean journal of audiology","volume":"18 3","pages":"126-30"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.7874/kja.2014.18.3.126","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32949299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review of assistive listening device and digital wireless technology for hearing instruments.","authors":"Jin Sook Kim,&nbsp;Chun Hyeok Kim","doi":"10.7874/kja.2014.18.3.105","DOIUrl":"https://doi.org/10.7874/kja.2014.18.3.105","url":null,"abstract":"Assistive listening devices (ALDs) refer to various types of amplification equipment designed to improve the communication of individuals with hard of hearing to enhance the accessibility to speech signal when individual hearing instruments are not sufficient. There are many types of ALDs to overcome a triangle of speech to noise ratio (SNR) problems, noise, distance, and reverberation. ALDs vary in their internal electronic mechanisms ranging from simple hard-wire microphone-amplifier units to more sophisticated broadcasting systems. They usually use microphones to capture an audio source and broadcast it wirelessly over a frequency modulation (FM), infra-red, induction loop, or other transmission techniques. The seven types of ALDs are introduced including hardwire devices, FM sound system, infra-red sound system, induction loop system, telephone listening devices, television, and alert/alarm system. Further development of digital wireless technology in hearing instruments will make possible direct communication with ALDs without any accessories in the near future. There are two technology solutions for digital wireless hearing instruments improving SNR and convenience. One is near-field magnetic induction combined with Bluetooth radio frequency (RF) transmission or proprietary RF transmission and the other is proprietary RF transmission alone. Recently launched digital wireless hearing aid applying this new technology can communicate from the hearing instrument to personal computer, phones, Wi-Fi, alert systems, and ALDs via iPhone, iPad, and iPod. However, it comes with its own iOS application offering a range of features but there is no option for Android users as of this moment.","PeriodicalId":90252,"journal":{"name":"Korean journal of audiology","volume":"18 3","pages":"105-11"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/dd/79/kja-18-105.PMC4285000.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32956582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Middle ear surgery in only hearing ears and postoperative hearing rehabilitation.","authors":"Myung Hoon Yoo,&nbsp;Byung Chul Kang,&nbsp;Hong Ju Park,&nbsp;Tae Hyun Yoon","doi":"10.7874/kja.2014.18.2.54","DOIUrl":"https://doi.org/10.7874/kja.2014.18.2.54","url":null,"abstract":"<p><strong>Background and objectives: </strong>The aim of this study was to evaluate surgical interventions and hearing rehabilitation in patients with chronic middle ear disease of only hearing ears.</p><p><strong>Subjects and methods: </strong>Thirty-one patients with chronic middle ear disease of only hearing ears were enrolled in this retrospective study. Patients were classified into three groups according to the hearing level: groups A [pure tone audiometry (PTA)<40], B (40≤PTA<70), and C (PTA≥70). We evaluated hearing results and patterns of auditory rehabilitation.</p><p><strong>Results: </strong>The main consideration for a surgical procedure was the presence of recurrent otorrhea and structural destruction. The reasons for surgical intervention in only hearing ears were otorrhea caused by chronic otitis media (68%), cholesteatoma (29%), and cholesterol granuloma (3%). The causes of contralateral deaf ears were chronic otitis media (81%) and sensorineural hearing loss (19%). Although there was hearing deterioration in some patients with severe hearing loss (PTA≥70), all patients achieved dry ears after surgery and functional hearing using auditory rehabilitation. Hearing aids were used in most patients with moderate to moderately severe hearing loss and cochlear implants were used for auditory rehabilitation in patients with severe to profound hearing loss.</p><p><strong>Conclusions: </strong>Proper evaluation and indications for surgery in only hearing ears are important for successful eradication of inflammation and hearing preservation. Surgical interventions can achieve dry ear and enable further auditory rehabilitations using hearing aids and cochlear implantation.</p>","PeriodicalId":90252,"journal":{"name":"Korean journal of audiology","volume":"18 2","pages":"54-7"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/68/f5/kja-18-54.PMC4181055.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32717159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of the effectiveness of monitoring Cisplatin-induced ototoxicity with extended high-frequency pure-tone audiometry or distortion-product otoacoustic emission.","authors":"Kwang Kyu Yu,&nbsp;Chi Ho Choi,&nbsp;Yong-Hwi An,&nbsp;Min Young Kwak,&nbsp;Soo Jung Gong,&nbsp;Sang Won Yoon,&nbsp;Hyun Joon Shim","doi":"10.7874/kja.2014.18.2.58","DOIUrl":"https://doi.org/10.7874/kja.2014.18.2.58","url":null,"abstract":"<p><strong>Background and objectives: </strong>To compare the effectiveness of monitoring cisplatin-induced ototoxicity in adult patients using extended high-frequency pure-tone audiometry (EHF-PTA) or distortion-product otoacoustic emission (DP-OAE) and to evaluate the concurrence of ototoxicity and nephrotoxicity in cisplatin-treated patients.</p><p><strong>Subjects and methods: </strong>EHF-PTA was measured at frequencies of 0.25, 0.5, 1, 2, 3, 4, 6, 8, 9, 11.2, 12.5, 14, 16, 18, and 20 kHz and DP-OAE at frequencies of 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, and 8 kHz in cisplatin-treated patients (n=10). Baseline evaluations were made immediately before chemotherapy and additional tests were performed before each of six cycles of cisplatin treatment. Laboratory tests to monitor nephrotoxicity were included before every cycle of chemotherapy.</p><p><strong>Results: </strong>Four of 10 patients showed threshold changes on EHF-PTA. Five of 10 patients showed reductions in DP-OAE, but one was a false-positive result. The results of EHF-PTA and DP-OAE were consistent in two patients. Only one patient displayed nephrotoxicity on laboratory tests after the third cycle.</p><p><strong>Conclusions: </strong>In our study, the incidence rate of cisplatin-induced ototoxicity was 40% with EHF-PTA or DP-OAE. Although both EHF-PTA and DP-OAE showed the same sensitivity in detecting ototoxicity, they did not produce the same results in all patients. These two hearing tests could be used to complement one another. Clinicians should use both tests simultaneously in every cycle of chemotherapy to ensure the detection of ototoxicity.</p>","PeriodicalId":90252,"journal":{"name":"Korean journal of audiology","volume":"18 2","pages":"58-68"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.7874/kja.2014.18.2.58","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32717160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Congenital cholesteatoma localized to the tip of the mastoid bone: a case report and possible etiology.","authors":"Seok Min Hong,&nbsp;Jun Ho Lee,&nbsp;Chan Hum Park,&nbsp;Hyung-Jong Kim","doi":"10.7874/kja.2014.18.2.85","DOIUrl":"https://doi.org/10.7874/kja.2014.18.2.85","url":null,"abstract":"<p><p>Congenital cholesteatomas of mastoid origin are extremely rare. We reported one in 2007 and experienced an additional case. A male presented with a 5-month history of right-sided ear discharge. Computed tomography of the temporal bone showed a soft tissue density occupying the mastoid tip. At surgery, the cholesteatoma sac was completely isolated from the mastoid antrum and lateral air cell in the mastoid tip area. We now doubt the rarity of this entity. With a brief literature review, we consider how the cholesteatoma localizes to the tip of the mastoid bone. </p>","PeriodicalId":90252,"journal":{"name":"Korean journal of audiology","volume":"18 2","pages":"85-8"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.7874/kja.2014.18.2.85","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32715513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A case of otogenic brain abscess causing loss of consciousness.","authors":"Min Kyu Kwak,&nbsp;Jae Ho Chung,&nbsp;Seung Hwan Lee,&nbsp;Chul Won Park","doi":"10.7874/kja.2014.18.2.76","DOIUrl":"https://doi.org/10.7874/kja.2014.18.2.76","url":null,"abstract":"<p><p>Acute or chronic otitis media can cause intracranial complications, one of the most serious being brain abscess. Empirical antibiotic treatment and proper surgical management should be considered to avoid fatal consequences. However, proper extent and optimal timing of surgical intervention are still matters of debate. We present a case of a 31-year-old man who presented with acutely altered mental status, caused by otogenic brain abscess who we treated successfully with antibiotics and otologic surgery and no neurosurgical treatment. </p>","PeriodicalId":90252,"journal":{"name":"Korean journal of audiology","volume":"18 2","pages":"76-9"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/da/ab/kja-18-76.PMC4181053.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32717162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A case of acute bilateral retrocochlear hearing loss as an initial symptom of unilateral thalamic hemorrhage.","authors":"Min-Joon Park,&nbsp;Sung-Won Yoon,&nbsp;Kang-Hyeon Kim,&nbsp;Young-Jin Kim","doi":"10.7874/kja.2014.18.2.80","DOIUrl":"https://doi.org/10.7874/kja.2014.18.2.80","url":null,"abstract":"<p><p>A speech discrimination test is a test using a list of 25 phonetically balanced monosyllables. It is often overlooked but significant enough for pure tone audiometry. Many physicians have performed pure tone audiometry but without a speech discrimination test. A 73-year-old woman visited our clinic complaining of sudden bilateral hearing loss. Pure tone audiometry showed only bilateral high frequency loss. However, speech discrimination had decreased markedly. We decided to follow-up after 1 week of Ginexin-F® (ginkgo leaf extract) and Nafril® (nafronyl oxalate). She felt a gait disturbance within 2 days. Magnetic resonance imaging revealed a left thalamic hemorrhage. After a 1 month hospitalization, the hematoma subsided, and speech discrimination recovered 3 months later. Acute hearing loss due to thalamic hemorrhage that recovered has never been reported. We report the first case of retrocochlear hearing loss that occurred with a thalamic hemorrhage in a patient who recovered. </p>","PeriodicalId":90252,"journal":{"name":"Korean journal of audiology","volume":"18 2","pages":"80-4"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/0d/e0/kja-18-80.PMC4181061.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32715512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of phonological awareness of preschool and school aged children with cochlear implant and normal hearing.","authors":"Niloufar Rastegarianzadeh,&nbsp;Mohammadrahim Shahbodaghi,&nbsp;Soghrat Faghihzadeh","doi":"10.7874/kja.2014.18.2.50","DOIUrl":"https://doi.org/10.7874/kja.2014.18.2.50","url":null,"abstract":"<p><strong>Background and objectives: </strong>The primary purpose of this study was to assess whether very early access to speech sounds provided by the cochlear implant enables children to develop age-appropriate phonological awareness abilities in their preschool and school years. A secondary purpose of this study was to examine whether children who had cochlear implantation before 18 months of age will develop better skills in phonological awareness than children who had cochlear implants in 18-36 months of age. A third purpose of this study was to examine whether some factors like the child's age or sex would have any effects on developing of age-appropriate phonological awareness abilities.</p><p><strong>Subjects and methods: </strong>48 children with 70 to 95 months of age who had been utilizing their cochlear implant(s) before 36 months of age (CI group) and 30 normal hearing peers (NH group) were enrolled in this study.</p><p><strong>Results: </strong>Child's age had a significant effect on phonological awareness, but sex had absolutely no effect in each group. Children in the cochlear implanted group were outperformed by their normal hearing peers in the area of phonological awareness, especially in phonemic awareness. The age of implantation was another significant variable.</p><p><strong>Conclusions: </strong>Although children with a younger age at implantation got better scores in phonological awareness test, they were outperformed by their normal hearing peers in this area.</p>","PeriodicalId":90252,"journal":{"name":"Korean journal of audiology","volume":"18 2","pages":"50-3"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/c1/ff/kja-18-50.PMC4181060.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32717158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A case of the vibrant soundbridge stapes coupler in patients with mixed hearing loss.","authors":"Ah Young Park,&nbsp;Ju Hyun Jeon,&nbsp;In Seok Moon,&nbsp;Jae Young Choi","doi":"10.7874/kja.2014.18.2.93","DOIUrl":"https://doi.org/10.7874/kja.2014.18.2.93","url":null,"abstract":"<p><p>The Vibrant Soundbridge (VSB) with stapes clip coupler placement at the stapes head has been used successfully to treat mixed hearing loss. Coupling between the floating mass transducer of the VSB and the stapes head is technically less demanding than incus vibroplasty and is more likely to generate a positive outcome without significantly changing residual hearing or resulting in medical or surgical complications. A 65-year-old man with bilateral mixed hearing loss and chronic otitis media underwent vibroplasty with a stapes clip coupler. Speech discrimination scores in both quiet and noise environments showed better functional gain with the VSB than with the use of a conventional hearing aid. The results of the present case show the feasibility of implanting a VSB with a stapes coupler in patients with mixed hearing loss due to chronic otitis media. </p>","PeriodicalId":90252,"journal":{"name":"Korean journal of audiology","volume":"18 2","pages":"93-6"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/8f/57/kja-18-93.PMC4181057.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32715515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strategy for the customized mass screening of genetic sensorineural hearing loss in koreans.","authors":"Mun Young Chang,&nbsp;Byung Yoon Choi","doi":"10.7874/kja.2014.18.2.45","DOIUrl":"https://doi.org/10.7874/kja.2014.18.2.45","url":null,"abstract":"<p><p>Hearing loss is one of the most common sensorineural disorder. More than half of congenital bilateral profound deafness cases have been estimated to be attributed to genetic cause. Identification of genetic cause can provide valuable information. We developed new diagnostic strategy combining phenotype-driven candidate gene approach and targeted exome sequencing to find out the causative mutation of hearing loss. The causative mutation detection rates of this strategy were 78.1% and 54.8% in Korean multiplex families and sporadic severe to profound hearing loss families, respectively. The most frequent causative genes of Korean multiplex families were SLC26A4 and POU3F4. The other causative genes were MRNR1, WFS1, COCH, TECTA, MYO6, COL11A2, EYA4, GJB3, OTOF, STRC, MYO3A, and GJB2. The most frequent causative gene of Korean sporadic severe to profound hearing loss families was SLC26A4 followed by GJB2, CHD7, and CDH23. Based upon the results, the value of this strategy as a diagnostic tool seems to be promising. Although whole genome and exome sequencing have advanced as the development of next-generation sequencing, this new strategy could be a good screening and diagnostic tool to find the causative mutations. </p>","PeriodicalId":90252,"journal":{"name":"Korean journal of audiology","volume":"18 2","pages":"45-9"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/b5/37/kja-18-45.PMC4181059.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32717157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}