• Journal of Chest Surgery
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• 제54권5호
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• pp.342-347
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• 2021

Thoracic surgeons need to be aware of several important points regarding intraoperative lymph node dissection during surgery for non-small cell lung cancer with ground-glass opacities. The first point relates to the need for lymph node dissection during sublobar resection. Since even patients undergoing sublobar resection may benefit from lymph node dissection, it should be selectively performed according to adequate indications, which require further study. Second, there seems to be no difference in postoperative morbidity between systematic sampling and systematic dissection, but the survival benefit from systematic dissection remains unclear. The results of randomized controlled trials on this topic are conflicting, and their evidence is jeopardized by a high risk of bias in terms of the study design. Therefore, further randomized controlled trials with a sound design should investigate this issue. Third, more favorable survival outcomes tend to be positively associated with the number of examined lymph nodes. Minimum requirements for the number of examined lymph nodes in non-small cell lung cancer should be defined in the future. Finally, lobe-specific lymph node dissection does not have a negative prognostic impact. It should not be routinely performed, but it can be recommended in selected patients with smaller, less invasive tumors. Results from an ongoing randomized controlled trial on this topic should be awaited.

• 한국임상수의학회지
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• 제39권5호
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• pp.240-245
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• 2022

A 15-year-old, neutered male, Shih-Tzu, was presented at the Chonnam National Veterinary Medical Teaching Hospital for evaluation of acute onset of persistent coughing, exercise intolerance, and abnormal heart sound. On thoracic auscultation, a split-second heart sound and a wheezing sound were detected on both sides of the chest walls. On physical examination, the dog's body condition score (BCS) was 7/9, and had stenotic nares. Thoracic radiographs revealed right-sided enlargement of the cardiac silhouette (vertebral heart score (VHS) 11.2; reference interval = 8.9-10.1), mild main pulmonary artery (MPA) bulging, mild interstitial infiltration, and hepatomegaly. The electrocardiogram showed right axis deviation, suggesting right ventricular hypertrophy. The echocardiographic study showed moderate pulmonary hypertension and moderate tricuspid regurgitation. There were no findings of a tracheobronchial disease, pulmonary thromboembolism, congenital shunt, left heart disease, or parasitic disease. Based on clinical signs and diagnostic findings, the dog was diagnosed with pulmonary hypertension secondary to brachycephalic syndrome. To rectify respiratory exacerbating factors, the dog was recommended weight control by restricting dietary intake and managing concurrent Cushing's syndrome. Treatments included sildenafil, pimobendan, furosemide, and ramipril. After five months of taking medications and weight control, the severity of pulmonary hypertension improved from moderate to mild. The clinical signs of the patient, including coughing and exercise intolerance, improved a lot. For 5 months of follow-up, the patient has not reported further recurrence of respiratory distress.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1997년도 추계학술대회
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• pp.113-117
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• 1997

In this paper we detected the thrombosis formation by spectral analysis and neural network. Using microphone and amplifier, we measured the sound from the mechanical valve which is attached to the pneumatic ventricular assist device. The sound was sampled by A/D converter and the periodogram is the main algorithm or obtaining spectrum. We made the valvular thrombosis models using pellethane and silicon and they are thrombosis model on the disk, around the sewing ring and fibrous tissue growth across the orifice of valve. The spectrum of normal and 5 kinds of thrombotic valve were obtained and primary and secondary peak appeared in each spectrum waveform. So to distinguish the secondary peak of normal and thrombotic valve quantatively, 3 layer back propagation neural network.

• Journal of Chest Surgery
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• 제15권3호
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• pp.303-307
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• 1982

Two patients with funnel chest deformity were corrected in the department of Thoracic Surgery, N.M.C. The first case was a 12 months old male suffering from recurrent upper respiratory tract infection and symmetrical funnel chest deformity, of which hollow cavity was measured 40 ml of water. He was corrected by method of sternal turnover. The result was satisfactory. The second case was a 16 years old male suffering from exertional dyspnea, recurrent upper respiratory tract infection, wheezing sound [esp., at night], and asymmetrical funnel chest deformity, of which hollow cavity was measured 80 ml of water. He was corrected by modified Ravitch method. Until postoperative 4 months, result was satisfactory. Thereafter, respiratory wheezing, exertional dyspnea and chest wall deformity were returned to pre-operative status.

• Journal of Chest Surgery
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• 제13권3호
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• pp.198-205
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• 1980

Clinical observations were performed on 373 cases of chest trauma, those were admitted and treated at the Department of surrgery, Korea University Hospital, during the past 15 years period from August 1965 to June 1980. 1. The ratio of male to female patient of chest trauma was 4:1 in male predominence and age from 10 to 50 occupied 87.4 % of the total cases. 2. The most common cause of chest trauma was traffic accident in this series. One hundred and eight one cases (48.5%) were injuried by traffic accident and total cases due to blunt trauma (non-penetrating injury) were 282 cases (75.6%) including the cases with traffic accident, and remaining 91 cases (24.4%) were due to penetrating injury including 73 cases (19.6%) of stab wounds. 3. hemopneumothorax were observed in 49% (182 cases) of the total cases, and etiologic distribution revealed 72% due to non-penetrating trauma and 28% due to penetrating injury. 4. Rib fracture was found in 44.8% of cases. common injuries associated with rib fracture were lung, brain and liver. 5. Most common symptom was chest pain and respiratory difficulty, and common sign associated with chest injury was decreased respiratory sound and subcutaneous sound. 6. conservative non-operative treatment was performed in 281 cases (75.4%) and 92 cases (24.6%) were treated with operative treatment including 33 cases (8.9%) with open thoracotomy. 7. Overall mortality was 5.6% (21 cases) and most common cause of death were due to brain edema, cardiogenic shock, asphyxia.

• 한국산학기술학회논문지
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• 제13권11호
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• pp.5442-5446
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• 2012

본 논문에서는 만성질환자 및 의료취약계층을 대상으로 지속적이고 체계적으로 건강상태를 체크하고 가장 최적의 환경을 지원하여 삶의 질을 향상시킬 수 있는 u-헬스케어용 원격진료서비스 시스템에 대한 것이다. u-헬스케어용 원격진료서비스 시스템은 무선을 통해 흉부에서 들리는 생체음을 측정하는데 이때 시스템에 사용하는 무선주파수에 대해 전자파의 적합성을 확인하고 의사와 환자에게 발생되는 전자파의 해에 대한 실험을 통해 u-헬스케어용 원격진료서비스 시스템이 진단시 의사와 환자 인체에 무해하다는 진단 환경을 제시한다.

• Tuberculosis and Respiratory Diseases
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• 제41권5호
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• pp.552-557
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• 1994

본 환자는오랜 기간 지속된 호흡곤란과 천명을 주소로 본원에 내원하였다. 당시 환자의 폐기능 검사상 고정형 형태의 기관지 협착소견이 보여, 기관지 조영술로 기관지 협착증을 진단하여 기관지 절제술과 함께 성형술로서 호흡곤란의 증세를 완화시키고, 폐기능 검사상 정상의 기류-용적 곡선을 보이게 되어 문헌고찰과 함께 보고하는 바이다.

• Journal of Chest Surgery
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• 제14권2호
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• pp.140-143
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• 1981

Thymolipoma is extremely uncommon benign mediastinal tumor consisting of fatty and thymic tissue. Only 50 verified cases have been reported in the world literatures. This one case is the first reported example of surgically treated thymolipoma associated with spontaneous pneumothorax. A thirty-two year old male patient had been in good health until two days prior to admission, when he noted sudden dyspnea associated with an aching pain over the left precordium. The dyspnea and chest pain had become progressively worse. The physical examination revealed that left hemithorax was tympanic sound on percussion and absence of breathing sound on auscultation and point of maximal impulse was located on the 4th intercostal space at the left sternal border. Emergency closed thoracostomy was performed under the impression of tension type spontaneous pneumothorax of the left lung. After closed thoracostomy, point of maximal impulse was not changed inspire of full expansion of the left lung and chest X-ray was strongly suggested pericardial effusion or cardiomegaly which couldn`t account for by clinical course and hemodynamic evidence. EKG, echocardiogram, bronchofiberoscophy, bronchogram and diagnostic thoracentesis was performed. On Dec. 8, 1980, operation was performed under the impression of mediastinal tumor in the anterior mediastinum. At left posterolateral thoractomy, a large fatty mass, measuring 35 x 27 x 13 Cm in dimension and weighing 3350 gm, was resected and multiple bullae on the apicoposterior segment of the left upper lobe was resected and continuously sutured. The pathologic diagnosis of the fatty mass was thymolipoma. The postoperative course was uneventful and discharged in good general conditions.

• Journal of Chest Surgery
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• 제14권2호
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• pp.135-139
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• 1981

Thymolipoma is extremely uncommon benign mediastinal tumor consisting of fatty and thymic tissue. Only 50 verified cases have been reported in the world literatures. This one case is the first reported example of surgically treated thymolipoma associated with spontaneous pneumothorax. A thirty-two year old male patient had been in good health until two days prior to admission, when he noted sudden dyspnea associated with an aching pain over the left precordium. The dyspnea and chest pain had become progressively worse. The physical examination revealed that left hemithorax was tympanic sound on percussion and absence of breathing sound on auscultation and point of maximal impulse was located on the 4th intercostal space at the left sternal border. Emergency closed thoracostomy was performed under the impression of tension type spontaneous pneumothorax of the left lung. After closed thoracostomy, point of maximal impulse was not changed inspire of full expansion of the left lung and chest X-ray was strongly suggested pericardial effusion or cardiomegaly which couldn`t account for by clinical course and hemodynamic evidence. EKG, echocardiogram, bronchofiberoscophy, bronchogram and diagnostic thoracentesis was performed. On Dec. 8, 1980, operation was performed under the impression of mediastinal tumor in the anterior mediastinum. At left posterolateral thoractomy, a large fatty mass, measuring 35 x 27 x 13 Cm in dimension and weighing 3350 gm, was resected and multiple bullae on the apicoposterior segment of the left upper lobe was resected and continuously sutured. The pathologic diagnosis of the fatty mass was thymolipoma. The postoperative course was uneventful and discharged in good general conditions.

• Journal of Chest Surgery
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• 제11권3호
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• pp.342-347
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• 1978

A 8 year old male was admitted to the Department of Thoracic Surgery, Korea University Hospital on June 22, 1978. The chief complaints were cyanosis and exertional dyspnea since at birth. EKG shows BVH and dextrocardia, phonocardiogram revealed the accentuation of second heart sound in aortic area. Echocardiogram from the left ventricle to the base of the heart, there is a discontinuity between the ventricular septum and the anterior aortic margin with a large aortic root & aortic overriding. His cardiac catheterization data and cardiac angiogram shows situs inversus totalis, dextrocardia, right aortic arch, large ventricular septal defect etc., and finally diagnosed Truncus Arteriosus. Edwards type IV with retrograde aortogram and selective bronchial angiogram. This is the first operative case reported as Rastelli operation for Truncus Arteriosus type IV in the literatures in Korea. Authors have experienced I case of Truncus Arteriosus, Edward type IV and Rastelli operation with Dacron Arterial Conduit Graft under cardiopulmonary bypass on July 3, 1978. The procedures were as follows; 2] Cardiopulmonary bypass: Origin of bronchial arteries excised from descending aorta bilaterally; defects in aorta closed. 2] Horizontal incision made high in right ventricle. 2] Ventricular septal defect [Kirklin type I+II] closed with Teflon patch. 4] Bifurcated dacron arterial graft with pericardial monocusp sutured to the bilateral pulmonary arteries. [Diameter 9 mm: Length 7 cm]. 5] Proximal end of the conduit graft anastomosed to right ventricle. [Diameter 19 mm: Length 5 cm]..Total perfusion time was 220 min. The result of operation was poor due to anastomotic leakage and increased pulmonary vascular resistance resulting acute right heart failure. The patient was died on the operation table. Literatures were briefly reviewed.