• Journal of Chest Surgery
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• 제8권1호
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• pp.37-44
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• 1975

Authors have reviewed the records of seven patients of multiple rib fractures with severe flail chest who were admitted to Hanyang University Hospital during the 3 years period from 1972 through 1975. Of the seven patients studied, automobile accidents led to the injuries in 4 cases, two patients were injured in fall from a tree and on the ox-heading. All who had a blunt trauma without any open wound on the chest. The numbers of the fractured ribs accounted for 6 to 9 of the ribs including double fractures from 3 to 5 ribs. The left side fractures occurred in the 6 patients and in the right only one patient. Thus the flail segment was more often located in the left antero-lateral position than in the right lateral position [the ratio was 6:1].. All cases had associated injuries. The injuries and multiple fractures were the most common associated injuries occurring in four and five of the patients respectively. The patients were classified as having associated head injuries when they were admitted in comatose or semicomatose state. When a major degree of instability of the thoracic cage exists, adequate respiratory change is not possible. For this reason the tracheostomy was performed in five patients in an acutely injured patient with flail chest only after an endotracheal tube has been inserted or after an endotracheal suction. All patients had secondary complications in the pleural cavity, such as hemothorax or hemopneumothorax with or without intrapulmonary hemorrhage and subcutaneous emphysema. Therefore, closed thoracostomy was performed in five patients in the emergency room. The thoracotomy was required in four patients: immediate operation without closed thoracostomy was performed in two patients and the thoracotomy was indicated in two patients after closed thoracostomy, because of increasing intrathoracic hemorrhage. As to the fixation of the flail segments, authors employed two techniques; one was towel clip traction of the flail segments and the other was intramedullary insertion of Kirschner`s wire in to the double fractured rib fragments for the fixation of the flail segments [Kirschner`s wire fixation]. Because` of an different results in the course of treatment between two techniques, data from patients with towel clip traction was compared with those from patients with thoracotomy and Kirschner`s wire fixation of the flail segments. Of the three patients with towel clip traction, two patients required bronchoscopic toilet due to lung atelectasis which developed because of inadequate motion of thoracic cage and poor expectoration. This was in contrast to the four patients with thoracotomy and Kirschner`s wire fixation, who didn`t these complication because of adequate motion of the thoracic cage and subsequent good expectoration.

• Tuberculosis and Respiratory Diseases
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• 제50권2호
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• pp.229-235
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• 2001

연구배경 : 폐기종은 대개 흡연의 결과로 생기나 1-2%에서는 ${\alpha}_1$-antitrypsin (A1AT)의 유전적 결핍으로 인해 발병한다. A1AT의 유전적 이형에 대한 연구는 주로 서구인을 대상으로 한 것으로 저자들은 정상 한국인에서 A1AT의 유전형(genotype)을 알아보고자 하였다. 방 법 : 1998년 1월부터 2000년 5월까지 경북대학교병원 건강검진센타 방문자 가운데 문진, 흉부단순촬영, 폐기능검사 등을 통하여 만성폐쇄성폐질환 및 천식등이 없는 정상인 380명을 대상으로 하였다. A1AT의 M1(Ala), M1(Val), M2, S, Z alleles에 대한 중합효소 연쇄반응(PCR) 및 restriction fragment length polymorphism (RFLP)를 시행하였다. 결 과 : A1AT 유전형의 빈도는 M1(Val)/M1(Val)형이 254예 (66.8%)로 가장 많았으며 M1(Val)/M2형 105예(27.6%), M2/M2형 19예 (5.0%), M1(Val)/M1(ala)형 2예 (0.5%) 순 이었다. 연령, 성별, 흡연력에 따른 유전자형의 분포도는 유의한 차이가 없었다. 결 론 : 한국인에서는 A1AT 결핍과 관련이 있는 유전형을 갖는 사람은 없거나 매우 드물 것으로 생각된다. 따라서 한국인에서는 A1AT 결핍 외의 다른 유전적 요소가 폐기종의 발병에 관여할 것으로 생각된다.

• 한국인구학
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• 제6권1호
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• pp.43-69
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• 1983

This study was conducted to make the life tables from specific causes of death in Korea. Both "Life tables of Korea in l978-79" and "the statistics on causes of death statistics in 1980" issued by Economic Planning Board were used as source of data for this study. Among the 58, 187 death certificates reported to the concerned authorities, 39, 801 causes were drawn for the purpose of this study. As a result, it is revealed that two thirds of men in Korea died from these 10 major causes of death. The summarized results are as follows: 1. According to recent statistics, 10 major causes of death in 1980 were shown in the order of 1) malignant neoplasms, 2) cerebrovascular disease, 3) accidents and adverse effects, 4)hypertensive disease, 5) ischaemic heart disease and heart attack, 6) chronic liver disease and cirrhosis, 7) tuberculosis, 8) pneumonia, bronchitis, emphysema and asthma, 9) suicide, 10) diabetes mellitis. 2. The major causes of death in Korea were very similar to those of developed countries such as West Germany, Denmark and Japan. This means that our pattern of death causes is almost approaching to that of developed countries. 3. Our crude death rate in 1980 was on the line of 6.6 per 1, 000 people. This is very low level, compared with 12.1 in West Germany and 10.0 in Denmark, however, our age sepcific death rate was on the verge of doubled level in each age category as to that of West Germany, Denmark and Japan. The fact tells us that our death rate is very high yet, especially in young and prime adult age, and the proportion of the aged is quite low. 4. Average ages of people died from malignant neoplasms, cerebro vascular diseases and hypertensive diseases were 63.1, 66.6, 67.3 respectively, however, that of accidents and adverse effect was only 42.5. This shows that accidents occur indifferently from age. 5. In the curve of eventual death probability, the curve of malignant neoplasms was the highest of all curves before 60 in age. However, the probability curve of eventually dying from accidents and adverse effects tends to decline with age. 6. In this study five life tables from major causes of death (four leading causes of death and of tuberculosis) were constructed for 1979. These life tables are reflecting accurately the effects of age distribution on the specific cause of death. In the surviving curje of these tables we can see that the curve of accidents is adversely related to age. While curves of neoplasms, hypertension and tuberculosis are not diminishing before 40 in age, they are going sharply downward after 50 in age.ard after 50 in age.

• Tuberculosis and Respiratory Diseases
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• 제77권2호
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• pp.73-80
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• 2014

Background: Low levels of serum vitamin D is associated with several lung diseases. The production and activation of matrix metalloproteinases (MMPs) may play an important role in the pathogenesis of emphysema. The aim of the current study therefore is to investigate if vitamin D modulates the expression and activation of MMP-2 and MMP-9 in human lung fibroblasts (HFL-1) cells. Methods: HFL-1 cells were cast into three-dimensional collagen gels and stimulated with or without interleukin-$1{\beta}$ (IL-$1{\beta}$) in the presence or absence of 100 nM 25-hydroxyvitamin D (25(OH)D) or 1,25-dihydroxyvitamin D ($1,25(OH)_2D$) for 48 hours. Trypsin was then added into the culture medium in order to activate MMPs. To investigate the activity of MMP-2 and MMP-9, gelatin zymography was performed. The expression of the tissue inhibitor of metalloproteinase (TIMP-1, TIMP-2) was measured by enzyme-linked immunosorbent assay. Expression of MMP-9 mRNA and TIMP-1, TIMP-2 mRNA was quantified by real time reverse transcription polymerase chain reaction. Results: IL-$1{\beta}$ significantly stimulated MMP-9 production and mRNA expression. Trypsin converted latent MMP-2 and MMP-9 into their active forms of MMP-2 (66 kDa) and MMP-9 (82 kDa) within 24 hours. This conversion was significantly inhibited by 25(OH)D (100 nM) and $1,25(OH)_2D$ (100 nM). The expression of MMP-9 mRNA was also significantly inhibited by 25(OH)D and $1,25(OH)_2D$. Conclusion: Vitamin D, 25(OH)D, and $1,25(OH)_2D$ play a role in regulating human lung fibroblast functions in wound repair and tissue remodeling through not only inhibiting IL-$1{\beta}$ stimulated MMP-9 production and conversion to its active form but also inhibiting IL-$1{\beta}$ inhibition on TIMP-1 and TIMP-2 production.

• 대한기관식도과학회:학술대회논문집
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• 대한기관식도과학회 1983년도 제17차 학술대회연제순서 및 초록
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• pp.13.3-14
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• 1983

저자들은 1973년 4월부터 1983년 2월까지 경희대학교 의과대학 부속병원 이비인후과에서 입원치료한 기도이물환자 24 명을 대상으로 임상적으로 관찰하여 다음과 같은 결과를 얻었다. 1) 성별은 남자 17예(71%) 여자 7예 (29%)로 남자에서 2.4 : 1의 비율로 많았고, 연령별은 4세 이하 17예 (71%) 로 전체의 2/3를 차지하였다. 2) 발병후 내원까지의 기간은 24시간 이내 12예(50%), 2~3 일 5예(21%)이었으며, 5개월이 지나서 내원한 예도 1예 있었다. 3) 이물의 종류는 식물성 13예( 54 %), 프라스틱 종류 5예(21%), 어골 3예(13%), 금속성 2예(8%), 치아 1예 (4%)의 순이었다. 4) 개재부위는 기관과 우측 기관지가 각각 9예(38 %), 좌측 기관지와 성문부가 각각 3예(12%)이었다. 5) 내원시 주된 증상은 호흡곤란이 19예 (79%)로 주가 되었고 그외 기침 11예(46%), 발열 9예(38%), 청색증 4예(8%)이었는데 증상이 없는 경우도 2예 (8%) 있었다. 6) 초진시 이학적 소견은 호흡음 감소가 15예(63%) 로 가장 많았고 그외 수포음 6예(25%), 흡기성 천명 5예 (21%), 흉벽 함몰 2예 (8%) 이었고 2예 (8%)에서는 특기할만한 이학적 소견이 없었다. 7) 내원시 단순흉부 X-선 소견은 무기폐 6예(25%), 폐기종 5예 (21%), 확실한 이물음영과 폐렴이 각각 4예(17%), 심장위치의 이동이 3예(13%)이었고 10예(42%)에서는 이상소견을 발견하지 못하였다. 8) 적출방법은 ventilating bronchoscope을 이용하거나 직접후두경을 이용한 경구적적출이 17예 (21%), 기관절개창을 통한 적출이 5예( 21 %), 기관절개창을 통한 자연배출과 개흉술이 각각 1예( 4 %)이었고 적출술 시도회수는 1회로 성공한 예가 20예( 83%), 2회 이상이 4예( 17 %)이었다. 9) 적출술조작으로 인한 합병증은 기관 발거곤란증과 기흉이 각각 2예 ( 8 %)이었다.

• 대한기관식도과학회:학술대회논문집
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• 대한기관식도과학회 1981년도 제15차 학술대회연제순서 및 초록
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• pp.4.1-4
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• 1981

저자는 1975년부터 1980년까지 서울대학교병원 이비인후과에 입원치료한 15세 이하의 기도이물환자 74례를 대상으로 임상통계학적으로 관찰하여 다음과 같은 결과를 얻었다. 1) 성별 및 연령별로 보면 유소아의 기도이물 74례중 남자 55례, 여자 18례로 남녀비는 3 : 1이며 연령분포는 2세미만이 41.8%로 가장 많고, 3세까지의 증례는 75.5%이었고, 5세까지의 증례는 83.6%이였다. 2) 증상및 이학적 소견에서는 내원시의 증상은 호흡-곤란, 기침, 청색증등이었으며, 6.7%에서는 전혀 증상이 없었다. 초진시의 이학적소견은 흡기의 감소, 천식음, 거친호흡음등이었으며 10.8%에서는 전혀 이학적 소견이 없었다. 3) 내원까지의 시간은 48.6%가 24시간내에 내원하였으나 2년이 지나서 내원한 례도 있었다. 4) 방사선학적 소견에서는 내원시의 단순흉부X-선 소견은 무기폐 25.0%, 폐기종 32.8%, 확실한 이물음영 17.2%이었고. 17.2%에서 정상이었다. 5) 이물의 종류와 개재부위는 기도이물 74례중 식물성 60.8%, 금속류가 17.5%, 프라스틱류 16.2%, 어골류, 2.7% 기타 2.7%이었다. 이물의 개재부위는 우측기관지 40.5%, 좌측기관지 31.0%, 기관 9.4%, 다발성 6.7%이었다. 6) 연령에 따른 이물의 종류를 보딘 5세이하에서는 대부분이 식물성이물이었고, 6∼15세에는 금속류와 프라스틱제품도 있었으며 특히 프라스틱 제품은 10세이상의 남자에 많았다. 7) 이물적출방법을 보면 Ventilating Bronchoscopy 82.3%, 기관절개술 2.7%, 흡입적출 2.7%, 자연배출 1.3%, 개흉술 5.4%, 사망이 5.4%이었다.

• 대한기관식도과학회:학술대회논문집
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• 대한기관식도과학회 1981년도 제15차 학술대회연제순서 및 초록
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• pp.8.5-9
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• 1981

식도이물은 이비인후과 영역에서 흔히 볼 수 있는 질환이지만 그 합병증으로 식도천공과 이에 따른 종격동염을 일으키는 예는 매우 드물다. 그러나 이러한 종격동염은 극히 위험한 합병증으로서 생명에 위험을 초래하는 예도 적지 않다. 저자들은 최근 식도이물에 의한 식도천공으로 종격동염이 병발한 경우를 경험하였기에 문헌고찰과 함께 보고하는 바이다. 환자는 69세 여자로 음식물에 섞인 유리조각을 오연한 후 심한 연하곤란 및 연하통을 주소로 본원 응급실에 내원하였으며 당시 하경부에 팽창과 심한 피하기종을 볼 수 있었다. 식도천공을 의심하여 식도경검사를 시행한 결과 이물은 발견하지 못했으나 경부 식도 우측벽에 약 4cm가량의 식도 종천공을 확인할 수 있었고 다량의 음식물 찌꺼기를 볼 수 있었다. 음식물 찌꺼기를 제거한 후 금식과 다량의 항생제를 투여하였으나 입원 제 3일에 흉곽통이 있었으며 흥부 X선상상부 종격동 음영의 확장을 볼 수 있었다. 입원 제 4일에는 호흡곤란이 있어 기관절개술을 시행하였으며 피하기종도 감소되었다. 입원 제15일에 시행한 식도경검사에서 경부 식도 우측벽의 천공부위에서 다량의 농이 매출되어 우측하경부의 전면에 배농관을 삽입하였다. 술후농의 양은 감소되었으나 약 15일간 농의 배출은 계속되었고 전신상태가 호전되었으나 환자의 경제적 사정으로 입원 제38일에 퇴원하였다. 그 후 항생제를 투여하며 통원가료후 완전히 회복되었다.

• 대한한방내과학회지
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• 제37권4호
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• pp.624-630
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• 2016

Objective: This study was designed to analyze the symptoms of chronic obstructive pulmonary disease (COPD) patients who attended a Korean medicine hospital and treatment effects through retrospective chart reviews.Methods: The medical records of 192 outpatients who had been diagnosed with COPD and visited the Allergy, Immune, and Respiratory System Department of Kyung Hee Korean Medicine Hospital from 1 February 2006 to 1 February, 2016 were retrospectively reviewed.Results: The study group consisted of 112 and 80 females. The median age of the patients was 59.80±15.46 y. Fifty of the patients had been diagnosed with chronic upper respiratory diseases, such as chronic rhinitis, nasopharyngitis, or sinusitis. The chief complaints were cough (n=136), sputum (n=124), and dyspnea (n=82). Other frequent symptoms were fatigue (n=11), hyperhidrosis (n=8), and a bad taste in the mouth (n=7). All the patients were prescribed Korean herbal medicine. In the study, 61 (31.77%) patients were treated with acupuncture, moxibustion, cupping therapy, or herbal steam therapy. Symptoms improved in 126 (65.63%) patients 141±272.82 d after the first treatment.Conclusions: Some of the COPD patients had chronic upper respiratory disease. The chief complains were cough, sputum, and dyspnea. Oher frequent symptoms related to body malfunction and pain. The symptoms improved in 126 (65.63%) patients 141.00±272.82 d post-treatment.

• 대한기관식도과학회지
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• 제3권1호
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• pp.94-100
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• 1997

Background and Objectives : In children with tracheal stenosis, operative management remains a challenging problem due to difficulties of operative techniques and postoperative care. The purpose of this study was to determine the effectiveness of tracheal resection with end to end anastomosis as operative management for tracheal stenosis in children. Materials and Methods : 6 children with severe tracheal stenosis underwent tracheal resection with end to end anastomosis. Causes of stenosis were trauma in 1 case and prolonged intubation or tracheotomy in 5 cases. The diagnoses were made by radiologic evaluation (plain X-ray, CT, 3-Dimensional CT) and confirmed by direct laryngoscopy and ventilating bronchoscopy under general anesthesia. Thyroplasty and unilateral arytenoidectomy were performed in 1 case. Suprahyoid release was done in 1 case with severe adhesion. Decanulation was achieved following postoperative endoscopic examination and pulmonary function test. Postoperative physical and radiologic examinations were given at regular intervals. Results : Stenosis were improved from grade III grade I in 4 cases and from grade II to grade I in 2 cases. Decanulation was achieved on average postoperative 6 months in 5 cases, and 10 years in 1 case due to exertional dyspnea. There were 1 each case of immediate postoperative subcutaneous emphysema, pneumothorax and wound infection. Postoperative granulomas at anastomosis site were treated with laser vaporization under suspension laryngoscope and bronchoscope in 3 cases. There was 1 each case of delayed postoperative vocal cord palsy, aspiration pneumonia and loss of cough reflex. Conclusion In tracheal stenosis of children, tracheal resection with end to end anastomosis has good result with preservation of normal airway. Preoperative evaluation of local factors such as swallowing, vocal cord movement and cough reflex and general condition was important for successful treatment. As the cases in adults, authors considered this operation to be a curable operative management for tracheal stenosis.

• Korean Journal of Radiology
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• 제22권3호
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• pp.476-488
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• 2021

Objective: We aimed to develop a deep neural network for segmenting lung parenchyma with extensive pathological conditions on non-contrast chest computed tomography (CT) images. Materials and Methods: Thin-section non-contrast chest CT images from 203 patients (115 males, 88 females; age range, 31-89 years) between January 2017 and May 2017 were included in the study, of which 150 cases had extensive lung parenchymal disease involving more than 40% of the parenchymal area. Parenchymal diseases included interstitial lung disease (ILD), emphysema, nontuberculous mycobacterial lung disease, tuberculous destroyed lung, pneumonia, lung cancer, and other diseases. Five experienced radiologists manually drew the margin of the lungs, slice by slice, on CT images. The dataset used to develop the network consisted of 157 cases for training, 20 cases for development, and 26 cases for internal validation. Two-dimensional (2D) U-Net and three-dimensional (3D) U-Net models were used for the task. The network was trained to segment the lung parenchyma as a whole and segment the right and left lung separately. The University Hospitals of Geneva ILD dataset, which contained high-resolution CT images of ILD, was used for external validation. Results: The Dice similarity coefficients for internal validation were 99.6 ± 0.3% (2D U-Net whole lung model), 99.5 ± 0.3% (2D U-Net separate lung model), 99.4 ± 0.5% (3D U-Net whole lung model), and 99.4 ± 0.5% (3D U-Net separate lung model). The Dice similarity coefficients for the external validation dataset were 98.4 ± 1.0% (2D U-Net whole lung model) and 98.4 ± 1.0% (2D U-Net separate lung model). In 31 cases, where the extent of ILD was larger than 75% of the lung parenchymal area, the Dice similarity coefficients were 97.9 ± 1.3% (2D U-Net whole lung model) and 98.0 ± 1.2% (2D U-Net separate lung model). Conclusion: The deep neural network achieved excellent performance in automatically delineating the boundaries of lung parenchyma with extensive pathological conditions on non-contrast chest CT images.