• Journal of Yeungnam Medical Science
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• 제31권1호
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• pp.1-8
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• 2014

Dizziness can be classified mainly into 4 types: vertigo, disequilibrium, presyncope, and lightheadedness. Among these types, vertigo is a sensation of movement or motion due to various causes. The main causes of peripheral vertigo are benign paroxysmal positional vertigo (BPPV), acute vestibular neuritis (AVN), and Meniere's disease. BPPV is one of the most common causes of peripheral vertigo. It is characterized by brief episodes of mild to intense vertigo, which are triggered by specific changes in the position of the head. BPPV is diagnosed from the characteristic symptoms and by observing the nystagmus such as in the Dix-Hallpike test. BPPV is treated with several canalith repositioning procedures. AVN is the second most common cause of peripheral vertigo. Its key symptom is the acute onset of sustained rotatory vertigo without hearing loss. It is treated with symptomatic therapy with antihistamines, anticholinergic agents, anti-dopaminergic agents, and gamma-aminobutyric acid-enhancing agents that are used for symptoms of acute vertigo. Meniere's disease is characterized by episodic vertigo, fluctuating hearing loss, and tinnitus. It is traditionally relieved with life-style modification, a low-salt diet, and prescription of diuretics. However, diagnosis and treatment of the peripheral vertigo can be difficult without knowledge of BPPV, AVN, and Meniere's disease. This article provides information on the differential diagnosis of peripheral vertigo in BPPV, AVN, and Meniere's disease.

• 대한족부족관절학회지
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• 제12권2호
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• pp.163-167
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• 2008

Purpose: To evaluate the incidence of avascular necrosis (AVN), prognostic reliability of the Hawkins sign, and clinical outcomes after operative treatment of fracture and dislocations of the talar neck. Materials and Methods: We analysed 16 patients with fracture and dislocations of the talar neck which were treated by open reduction and internal fixation and followed up for more than 2 years. The postoperative radiographs were examined for Hawkins sign and avascular necrosis was confirmed by bone scan. The assessment of clinical results was based on the Hawkins scoring system. Results: AVN was occurred in 2 of 16 cases (12.5%) only in type III. Hawkins sign was found 11 of 16 cases (68.8%), which included 8 cases in type II, 2 cases in type III and 1 case in type IV. The Hawkins sign was not observed in two cases with AVN. In contrast, only 2 of the 5 cases with a negative Hawkins sign developed AVN. According to Hawkins scoring system, 4 patients (25.0%) was in excellent, 7 patients (43.8%) in good, 4 patients (25.0%) in fair and 1 patient (6.3%) in poor. Conclusion: Incidence of AVN after operative treatment of fracture and dislocations of the talar neck was lower than that of previous reports. Hawkins sign had a high prognostic reliability, but absence of Hawkins' sign should not be considered a totally reliable indicator of development of avascular necrosis.

• Radiation Oncology Journal
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• 제26권2호
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• pp.126-130
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• 2008

대퇴골두 무혈성괴사는 혈류장애로 인해 대퇴골두의 골세포 괴사가 나타나는 것으로 여러 원인 중 방사선치료도 하나의 원인으로 알려져 있으나 발병률에 대해서는 보고된 바 없는 상태이다. 저자들은 삼성서울병원에서 전골반 방사선치료를 받은 자궁암환자 577명 중 2명의 환자에서 대퇴골두 무혈성괴사를 경험하였다. 2예 모두 전형적인 방사선학적 소견을 보였다. 골반 방사선치료 후 발생하는 대퇴골두 무혈성괴사는 매우 드물게 나타나지만 방사선 조사 범위에 국한된 특징적인 영상의학적 소견을 보이므로 진단에 유념해야 하겠다.

• 대한족부족관절학회지
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• 제19권4호
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• pp.161-164
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• 2015

Purpose: The purpose of this study is to define the geographic patterns of partial avascular necrosis (AVN) of the talar body and to determine whether there were any predictors of both the location and occurrence of partial AVN. Materials and Methods: Nineteen patients with fracture of the talar neck treated by open reduction and internal fixation and followed up for more than 1 year were analyzed. The radiographs were examined 6 to 8 weeks after the operation for Hawkins sign and if it was not observed, magnetic resonance scans were performed. The three-dimensional analysis was performed using Mimics 17.0 (Materialise). The incidence of collapse and time to operative intervention was recorded. Results: Partial AVN of the talar body was observed in six out of 19 patients. The avascular segment of the talar body was located predominantly in the anterolateral portion. The average volume of the avascular segment was $289mm^3$, and it occupied 1% of total volume of the talus, and 10% of the talar dome. Collapse occurred in one patient in the area of the avascular process. There were no observable trends with regard to Hawkins classification, incidence of collapse, or time to operative intervention to the location of the avascular segment. Conclusion: Partial AVN can occur after fracture of the talar neck. The predominant location of the avascular segment was the anterolateral portion of the talar body. This information may be helpful to understanding the process of avascular necrosis of the talar body.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2022년도 추계학술대회
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• pp.183-183
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• 2022

This study was aimed to investigate the content of avenanthramides(AVNs) and other phenolic compounds in the grains of a naked oat cultivar, Daeyang, which were seeded in the fall and spring, and examine the effects of alcohol extracts from the grains on natural killer(NK) cell activity in vitro. The content of AVN-A, AVN-B, and AVN-C in the spring-seeded oat grains was 2.2 folds higher than the fall-seeded oat grains on average. Among these AVNs, the content of AVN-C was 1.9-folds higher in the spring-seeded oat grains(66.1㎍/g), comparing to the content in the fall-seeded oat grains(34.8㎍/g). The content of other phenolic compounds, such as phenolic acids and flavonoids in the spring-seeded oat grains was 1.1~4.7-folds higher than the fall-seeded oat grains. In particular, sinapinic acid was the most abundant phenolic acid in the spring-seeded oat grains(50.0㎍/g) and its content was 2.4-folds higher than its content in the fall-seed oat grains. Furthermore, NK cell activity in vitro treated with the spring-seeded oat grain extracts was 158%, and it was 18%p higher than NK cell activity treated with the extracts from the fall-seeded oat grain extracts. Our finding suggest that the bioactive properties of naked oat grains would be enhanced by spring seeding.

• 척추신경추나의학회지
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• 제14권2호
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• pp.55-65
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• 2019

Objectives : The aim of this study was to report the improvements in pain that a woman experienced after receiving Korean medicine treatments for the pain associated with core decompression surgery due to avascular necrosis (AVN) of both femur heads. Methods : The patient was diagnosed as having AVN in both femur heads and underwent core decompression surgery. After operation, she had pain on her right inguinal region and her range of motion (ROM) was restricted. She was treated with Korean medicine including, herbal medicine, acupuncture, Chuna Manual Therapy and bee venom acupuncture (BV). This study was measured by using the Visual Analogue Scale (VAS) and the ROM scale. Results : After conservative treatment, the patient's pain was reduced and ROM was increased. Daily living quality had improved. Conclusions : In this case, Korean conservative medicine therapy with Chuna Manual Therapy had a positive effect on the symptoms after core decompression surgery due to avascular necrosis of the femur head.

• 척추신경추나의학회지
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• 제9권1호
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• pp.115-124
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• 2014

Objectives : The aim of this study is to report the improved case of bilateral avascular necrosis(AVN) of femur head treated with Korean medicine and Fascia Chuna Therapy Methods : The patient diagnosed with bilateral AVN is hospitalized at department of korean rehabilitation medicine, Samse hospital of korean medicine. The subject is treated by herbal medicine, acupuncture, SBV and hip joint gyoung-geon chuna. This study was measured by visual analogue scale(VAS) score, walking time without pain per 6 minutes and harris hip score(HHS). Results : The patient showed decreased VAS score, HHS and improved walking time without pain per 6 minutes after treated with korean medicine and hip joint Fascia Chuna Therapy. Conclusions : The patient showed reduced pain and positive effect on activities of daily living.

• 대한핵의학회지
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• 제29권4호
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• pp.504-510
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• 1995

목적 : 신장 이식후 발생한 무혈관성 골괴사의 빈도를 알아보고, 골스캔과 SPECT, MRI의 역할을 비교해 보고자 하였다. 대상 및 방법 : 1989년 6월부터 1995년 9원까지 본원에서 신장 이식을 받은 301명중 임상적으로 무혈관성 골괴사를 진단받은 환자의 발생빈도 및 침범 부위를 알아보고, 무혈성 골괴사 환자에서 시행한 골스캔과 SPECT, MRI 소견을 비교하여 보았다. 결과 : 무혈관성 골괴사의 발생빈도는 3.3%(10/301)였고, 침범 부위는 대퇴골두 16병변과 종골 융기 2병변이었다. 또한 전신 골스캔상 천골의 불충분 골절을 보인 경우가 1례 있었다. 골스캔 소견은 열소에 둘러싸인 냉소 13병변, 열소 3병변, 냉소 1병변, 정상 1병변의 소견을 보였고 열소만을 보인 경우는 SPECT에서는 작은 냉소를 둘러싸는 열소로, 냉소나 정상으로 보인 경우는 SPECT상 반응성 열소 없는 냉소로 나타났다. SPECT와 MRI를 같이 시행한 6례중 모두양성인 경우가 5례였고, 증상이 있었던 1례에서 SPECT상 냉소로 보였으나 MRI에서는 정상소견을 보였다. 결론 : 신장 이식후 발생한 무혈관성 골괴사의 발생빈도는 3.3%였고, 전신골스캔으로 골괴사외의 전신골 병변을 관찰할 수 있었으며 증상은 있으나 골스캔상에서 병변이 뚜렷하지 않거나 MRI에서 음성인 경우 등에 SPECT가 진단에 도움이 되었다. 그러므로 증상은 있으나 MRI에서 음성인 경우 SPECT를 시행하는 것이 신장 이식후의 환자에서 발생하는 무혈관성 골괴사의 진단에 유용하리라고 생각된다.

• 전기학회논문지P
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• 제67권2호
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• pp.100-105
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• 2018

In this paper, we determined the driver's stress and fatigue level through physiological signals of a driver in the connected car environment, accordingly designing and implementing the architecture of the connected cars' platforms needed to provide services to make the driving environments comfortable and reduce the driver's fatigue level. It includes a gateway between AVN and ECU for the vehicle control, a framework for native applications and web applications based on AVN, and a sensing device and an emotion estimation engine for application services. This paper will provide the element technologies for the connected car-based convergence services and their implementation methods, and reference models for the service design.

• 대한족부족관절학회지
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• 제16권3호
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• pp.197-201
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• 2012

Callotasis has been widely used to treat brachymetatarsia. But various complications have been reported. Avascular necrosis of the $4^{th}$ brachymetatarsia treated by callotasis has not been frequently addressed in the literature. We report 1 cases of avascular necrosis of the $4^{th}$ brachymetatarsia treated by callotasis with a review of the literature.