• 대한두개안면성형외과학회지
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• 제22권6호
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• pp.319-323
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• 2021

Background: Prophylactic antibiotics are used to prevent surgical wound infection; however, proper indications must be followed with careful consideration of the risks and benefits, especially in clean or clean-contaminated wounds. Nasal bone fractures are the most common type of facial bone fracture. The most common method for treating nasal bone fracture is closed reduction, which is performed inside the nasal cavity without an incision. The purpose of this study was to determine the need for antibiotic use in the closed reduction of nasal bone fractures. Methods: A retrospective study was conducted using data from the National Insurance Service Ilsan Hospital of the Republic of Korea between 2016 and 2018. The records of patients who underwent closed reduction of nasal bone fracture were reviewed and classified according to sex, age, comorbidities, perioperative antibiotic usage, postoperative complications, nasal packing, anesthesia type, surgeon's specialty, and operation time. Results: Among the 373 patients studied, the antibiotic prescription rate was 67.3%. Just 0.8% of patients were prescribed preoperative antibiotics only, 44.0% were prescribed postoperative antibiotics only, and 22.5% were prescribed both preoperative and postoperative antibiotics. There were no cases that satisfied the definition of "surgical site infection." Furthermore, 2.1% of infection-related complications (e.g., mucosal swelling, synechia, and anosmia) occurred only in the antibiotic usage group. The use of nasal packing, anesthesia type, and surgeon's specialty did not show any difference in infection-related complication rates. Conclusion: According to the study findings, the routine use of perioperative antibiotics is not recommended in uncomplicated nasal bone fracture surgery.

• 한국임상수의학회지
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• 제30권2호
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• pp.115-118
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• 2013

8세 중성화 암컷 고양이가 만성 비강 삼출과 호흡곤란으로 내원하였다. 신체검사에서 오른쪽 비강의 출혈농성 삼출이 관찰되었고, 흡기성 호흡곤란과 코골기 증상, 종대된 오른쪽 하악 림프절이 확인되었다. 전혈검사와 혈청화학 검사에서 미약하게 증가한 헤마토크리트 값과 고글로불린혈증이 나타났으며, 혈청학적 및 PCR 기법을 이용한FeLV, FIV, Chlamydophila felis, Feline Calicivirus, Herpesvirus, Bordetella, Mycoplasma felis, H1N1 influenza 검사에서는 모두 음성이었다. 방사선 검사에서는 오른쪽 비강의 연조직 밀도 상승이 관찰되었고, CT촬영에서는 비중격의 위축과 골 용해가 확인되었다. 추가 검사로 실시한 하악 림프절 세포학 검사에서는 다양한 두께의 염색이 안 되는 협막을 갖는 곰팡이가 관찰되었으며, narrow based budding을 보이는 곰팡이도 관찰되어 크립토코쿠스 감염증으로 잠정진단하였다. 혈청학적 검사에서 크립토코쿠스 항원가는 1 : 32,768로 매우 높게 나왔다. 검사결과에 기초해서 곰팡이 감염 치료를 위해 fluconazole, clindamycin, tocopherol투여를 실시했으며 약물 투여 후 3일 이내에 환자의 증상은 극적으로 개선되었다. 장기적인 관찰과 추가 항원역가 검사를 실시하고자 하였으나 환자는 증상 개선 후 퇴원하여 재 내원하지 않았다.

• 대한미생물학회지
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• 제17권1호
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• pp.67-74
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• 1982

비병원근무자(非病院勤務者)인 부산대학교(釜山大學校) 자연과학대학(自然科學大學) 생물학계열(生物學系列) 18명(名), 미생물학과(微生物學科) 2학년(學年) 31명(名), 미생물학과(微生物學科) 3학년(學年) 37명(名)과 병원근무자(病院勤務者)인 간호과학생(看護科學生) 30명(名), 간호원(看護員) 30명(名), 수술근무간호원(手術勤務看護員) 30명(名), 의사(醫師) 30명(名), 총(總) 256명(名)을 대상(對象)으로 하여 비강(鼻腔)에서 황색포도구균(黃色葡萄球菌)을 분리(分離)하여 얻은 성적(成績)은 다음과 같다. 1. 비병원근무자(非病院勤務者) 대학생(大學生)에서 황색포도구균분리율(黃色葡萄球菌分離率)은 49예(例)(29.7%), 병원근무자(病院勤務者)에서는 67예(例)(55.8%)이었다. 2. 비병원근무자(非病院勤務者) 대학생(大學生)의 비강(鼻腔)에서 분리(分離)한 황색포도구균(黃色葡萄球菌)의 40예(例)에서 coagulase 양성균주(陽性菌株) 29예(例)(72.5%), 음성균주(陰性菌株) 11예(例)(27.5%)이고, mannitol 분해(分解) 양성균주(陽性菌株) 29예(例)(72.5%), 음성균주(陰性菌株) 11예(例)(27.5%)이었다. 3. 병원근무자(病院勤務者)의 비강(鼻腔)에서 분리(分離)한 황색포도구균(黃色葡萄球菌)의 67예(例)에서 coagulase 양성균주(陽性菌株) 59예(例)(58.1%), 음성균주(陰性菌株) 8예(例)(11.9%)이고, mannitol 분해양성균주(分解陽性菌株) 49예(例)(73.1%), 음성균주(陰性菌株) 18예(例)(26.9%)이었다. 4. 분리균주중(分離菌株中)에서 coagulase양성(陽性) 및 mannitol분해양성(分解陽性) 49균주(菌株)에 대(對)한 용혈반응(溶血反應)의 감수성(感受性)의 순위(順位)는 가토(家兎) 40예(例)(81.6%), 모르못트 25예(例)(53.5%), 면양(緬羊) 13예(例)(26.5%)이고, 닭 및 사람의 적혈구(赤血球)에는 용혈반응음성(溶血反應陰性)이었다. 5. 분리균주중(分離菌株中)에서 coagulase양성(陽性) 및 mannitol분해양성(分解陽性) 49균주(菌株)에 대(對)한 용혈반응(溶血反應)은 전주(全株)에 대(對)해서 각각(各各) 음성(陰性)이었다. 6. 화학요법제(化學療法劑)에 대(對)한 분리균주(分離菌株)에 대(對)한 성적(成績)은 비병원근무자(非病院勤務者) 분리균주(分離菌株)는 대부분(大部分) 감수성(感愛性)이 있으나 병원근무자(病院勤務者) 분리균주(分離菌株)는 대부분(大部分) 저항성(抵抗性)을 나타냄을 관찰(觀察)할 수 있었다.

• Clinical and Experimental Pediatrics
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• 제45권5호
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• pp.669-672
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• 2002

저자들은 출생 후 수 시간 뒤에 발생한 호흡 곤란을 주소로 내원한 환아에서 우연히 발견된 기관의 석회화와 양측 조롱박 구멍 협착증을 진단하고 비강 내에 스텐트를 위치시키는 수술로서 호흡 곤란 등의 증상 호전된 환아를 보고하는 바이다.

• Archives of Plastic Surgery
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• 제48권1호
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• pp.61-68
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• 2021

Background This study evaluated changes in nasal airway function following Le Fort I osteotomy with maxillary impaction according to the Nasal Obstruction Symptom Evaluation (NOSE) scale. Methods This cohort study included 13 patients who underwent Le Fort I osteotomy with maxillary impaction. Nasal airway function was evaluated based on the NOSE scale preoperatively and at 3 months postoperatively. The change in the NOSE score was calculated as the preoperative score minus the postoperative score. If the normality assumptions for changes in the NOSE score were not met, a nonparametric test (the Wilcoxon signed-rank test) was used. Differences in NOSE score changes according to patient characteristics and surgical factors were evaluated using the Kruskal-Wallis test and the Mann-Whitney test. Results Patients ranged in age from 18 to 29 years (mean ±standard deviation [SD], 23.00±3.87 years). Three were men and 10 were women. Eleven patients (84%) had an acquired dentofacial deformity with skeletal class III malocclusion. The preoperative NOSE scores ranged from 40 to 90 (mean±SD, 68.92±16.68), and the postoperative NOSE scores ranged from 25 to 80 (53.84±18.83). The cohort as a whole showed significant improvement in nasal airway function following maxillary impaction (P=0.028). Eleven patients (84%) had either improved (n=8) or unchanged (n=3) postoperative NOSE scores. However, nasal airway function deteriorated in two patients. Patient characteristics and surgical factors were not correlated with preoperative or postoperative NOSE scores. Conclusions Nasal airway function as evaluated using the NOSE scale improved after maxillary impaction.

• Toxicological Research
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• 제28권4호
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• pp.217-224
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• 2012

In recent decades, titanium dioxide ($TiO_2$) nanoparticles have been used in various applications, including paints, coatings, and food. However, data are lacking on the toxicological aspects associated with their use. The aim of this study was to assess the inhalation toxicity of $TiO_2$ nanoparticles in rats by using inhalation exposure. Male Wistar rats were exposed to $TiO_2$ nanoparticles for 2 weeks (6 hr/day, 5 days/week) at a mean mass concentration of $11.39{\pm}0.31mg/m^3$. We performed time-course necropsies at 1, 7, and 15 days after exposure. Lung inflammation and injury were assessed on the basis of the total and individual cell counts in bronchoalveolar lavage fluid (BALF), and by biochemical assays, including an assay for lactate dehydrogenase (LDH). Furthermore, histopathological examination was performed to investigate the lungs and nasal cavity of rats. There were no statistically significant changes in the number of BALF cells, results of biochemical assays of BALF and serum, and results of cytokine analysis. However, we did observe histopathological changes in the nasal cavity tissue. Lesions were observed at post-exposure days 1 and 7, which resolved at post-exposure day 15. We also calculated the actual amounts of $TiO_2$ nanoparticles inhaled by the rats. The results showed that the degree of toxicity induced by $TiO_2$ nanoparticles correlated with the delivered quantities. In particular, exposure to small particles with a size of approximately 20 nm resulted in toxicity, even if the total particle number was relatively low.

• 대한구순구개열학회지
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• 제10권1호
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• pp.17-22
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• 2007

The vertebrate upper lip forms from initially freely projecting maxillary, medial nasal, and lateral nasal prominences at the rostral and lateral boundaries of the primitive oral cavity. These facial prominences arise during early embryogenesis from ventrally migrating neural crest cells in combination with the head ectoderm and mesoderm and undergo directed growth and expansion around the nasal pits to actively fuse with each other. Initial fusion is between lateral and medial nasal processes and is followed by fusion between maxillary and medial nasal processes. Fusion between these prominences involves active epithelial filopodial and adhering interactions as well as programmed cell death. Slight defects in growth and patterning of the facial mesenchyme or epithelial fusion result in cleft lip with or without cleft palate, the most common and disfiguring craniofacial birth defect. This review will summarize the current understanding of the basic morphogenetic processes and molecular mechanisms underlying upper lip development.

• 대한후두음성언어의학회지
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• 제29권2호
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• pp.79-82
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• 2018

Background and Objectives : Laryngeal contact granuloma is benign inflammatory disease induced by excessive mechanical contact of larynx such as endotracheal intubation, voice abuse, laryngeal microsurgery as well as laryngopharygeal reflux. Because it is caused by various risk factors, multiple treatment modalities are required. The purpose of study is to evaluate treatment effect of topical steroid through nasal cavity in contact granuloma. Materials and Method : Fifty-two patients were enrolled in this study with exception of intubation granuloma. Patients were classified with four groups (Proton pump inhibitor (PPI), Nasal steroid spray (SPR), PPI+SPR, Observation) according to treatment modality. Results : Patients who treated with PPI (Odds ratio 2.45, p=0.03) and combination of PPI and SPR (Odds ratio 2.88, p<0.01) had significantly better response than patients who not treated with medical therapy. Conclusion : Combination therapy of nasal steroid spray and PPI is effective for contact granuloma of larynx and considered as a treatment of choice rather than PPI only treatment.

• 한국임상수의학회지
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• 제40권2호
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• pp.139-146
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• 2023

Three dogs were referred with epistaxis and facial deformity. Computed tomography (CT) scan identified masses in the bilateral nasal cavity with soft tissue attenuation and contrast enhancement. These masses had caused adjacent bones lysis, especially lysis of cribriform plate that extended to the intracranial region. Base on histopathology and CT imaging results, tumors were diagnosed as nasal carcinomas at stage 4. Three dogs were treated with stereotactic radiation therapy (SRT). These dogs received 30-35 Gy from 3-5 daily treatments (7-10 Gy per treatment). The sizes of tumors decreased the most on follow-up CT images at one month after treatment. Recurrence was confirmed between 3 and 5 months after completing SRT. The survival time of dogs treated with SRT were 110, 190, and 210 days, respectively. This study confirmed that SRT could treat canine nasal carcinomas with cribriform plate lysis without causing serious radiation toxicities. Follow-up CT examination is considered at 1 month and 3 to 6 months after SRT to accurately evaluate the prognosis and the timing of recurrence.

• 한국임상수의학회지
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• 제23권3호
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• pp.355-360
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• 2006

Four dogs with similar respiratory signs were referred to Veterinary Medical Teaching Hospital, Seoul National University. The clinical signs observed in these cases were anorexia, nasal discharge, sneezing, epistaxis, ocular discharge, and exophthalmoses. The routine laboratory tests revealed leukocytosis in two cases. On the skull radiographs, soft tissue density filled nasal cavity with loss of turbinate detail and increased density in frontal sinuses were found in all cases. Lysis of nasal bone was seen in two cases. Lysis of zygomatic arch was seen in one case. On computed tomography scan images, asymmetrical destruction of turbinate and nasal septum, and the superimposition of a soft tissue mass over the turbinate with peripheral contrast enhanced effect were identified in all cases. Destruction of ipsilateral orbital bone and invasion to retrobulbar region were visualized in all cases. In addition, all cases had lysis of cribriform plate. Lysis of nasal bone and destruction of hard palate were seen in two cases. Swelling of submandibular lymph node and salivary gland was seen in a case. Invasion to brain was identified in a case. All cases were diagnosed as nasal adenocarcinoma by cytology with fine needle aspiration and curettage.