• Journal of Trauma and Injury
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• 제28권1호
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• pp.31-33
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• 2015

Traumatic aortic injury is well recognized as a primary cause of instantaneous death in victims of thoracic blunt trauma presenting with an aortic rupture or dissection, particularly after a deceleration injury. However, a direct aortic injury caused by a fractured rib segment after blunt thoracic trauma is extremely rare. We report the case of a 43-year-old male patient who experienced an aortic injury caused by the sharp edge of a fractured rib after multiple rib fractures due to blunt thoracic trauma.

• 수산해양기술연구
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• 제20권2호
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• pp.133-136
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• 1984

정변위 인장시험기를 사용하여 SUS 304강 용접열 영향부의 여러 가지 염화 마그네슘용액 중에서의 SCC 발생 특성을 연구한 결과 다음과 같은 결론을 얻었다. 1) SCC 발생 잠복기간은 초기 응력강도계수 K 하(Ii) 값은 낮게 함으로써 크게 지연된다. 2) 비등 염화 마그네슘 용액 중에서의 SCC 발생은 부하와 Cl 이온의 농도에 의한 부동태 피막의 파손에 기인된다. 3) SUS 304 강 용접열 영향부의 SCC 발생 감수성은 높은 농도의 염화 마그네슘 용액일수록 온도를 낮게 함으로써 둔화된다.

• Journal of Chest Surgery
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• 제26권7호
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• pp.526-531
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• 1993

Sixty-one consecutive patients with coronary artery bypass graft for myocardial revascularization were retrospectively reviewed to analyze various pattern of postoperative complication and death during hospital stay from Nov. 1988 to Oct. 1992. Fortytwo of the patients were male and nineteen female. The mean age was 56 and 51 years in male and female. Preoperative diagnosises were unstable angina in 14 of patients, stable angina in 28, postmyocardial infarction state in 15, and state of failed percutaneous transluminal coronary angioplasty in 4. 141 stenosed coronary arteries were bypassed with use of 20 pedicled internal mammary artery and 124 reversed saphenous vein grafts. Postoperative complications and perioperative death were as follows: 1. Of 61 patients undergoing operation, peri and postoperative over all complication occured in 15 patients [ 25% ]; newly developed myocardial infarction in 4, intractable cardiac arrhythmia including atrial fibrillation and frequent ventricular premature contraction in 3, bleeding from gastrointestinal tract in 2, persistent vegetative state as a sequele of brain hypoxia in 1, wound necrosis in 1, left hemidiaphragmatic palsy in 3 and poor blood flow through graft in 2. 2. Operative mortality was 8%[5 patients]. 3 out of these died in operating room; 1 patient by bleeding from rupture of calcified aortic wall, 1 by air embolism through left atrial vent catheter, 1 by low cardiac output syndrome. 2 patients died during hospital stay; 1 by acute respiratory distress syndrome with multiuple organ failure, 1 by brain death after delayed diagnosis of pericardial tamponade.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제33권5호
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• pp.543-547
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• 2007

The plunging ranula is a kind of ranula that goes over the mouth floor to the neck and other adjacent tissue. Sublingual gland is gently accepted as origin of plunging ranula. Plunging ranula develops commonly because of rupture of sublingual gland duct by trauma and extravasation of salivary secretion to the adjacent tissue. It is not true cyst so that there is no epithelium. And it consisted with thin connective tissue, inflammation cell infiltration and salivary secretion. Left without treatment, it can grow into the 10 cm more huge lesion. This report is a case of 73 years old female who was diagnosed as plunging ranula with review of literature. She presented 5 cm submandibular swelling at first. When surgery was delayed because of patient's condition, the lesion grew into the l2cm huge size. We performed excision of sublingual gland, submandibular gland and plunging ranula and had a good result without recurrence.

• Journal of Chest Surgery
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• 제18권4호
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• pp.605-614
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• 1985

The principal aim of surgery for congenital heart anomalies is the establishment of normal hemodynamic function. Palliative and corrective operations are selected with time to attain this end with minimal risk. In recent years, as operative mortality after primary total correction is lower than the mortality after early palliation and delayed correction, corrective operations in infants have increasingly supplanted palliative ones. Two hundred and eighteen infants below 10 kg with congenital heart anomalies underwent primary surgical intervention at Yonsei Medical Center from March 1979 to June 1985. There were 155 infants with VSD, 35 Infants with TOF, 5 infants with ECD, 4 infants with TGV, 3 infants with DORV, 3 infants with Pulmonary atresia, 3 infants with ASD and PDA, 2 infants with DOLV, and the remainders were Sinus Valsalva rupture, residual mitral regurgitation after total correction of ECD, PAPVR, Cor triatriatum, Truncus arteriosus, and Tricuspid atresia. The overall surgical mortality was 15.1%. In the acyanotic group, 13 infants died among 168 infants, and mortality was 7.7%. But in the cyanotic group, the mortality rate was very high and 20 infants died among 50 infants raising the mortality to 40.0%. These poor surgical results in the cyanotic or complicated group was due to inaccurate diagnosis, improper surgical methods and inadequate post-operative care which should be improved.

• 한국임상수의학회지
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• 제37권6호
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• pp.355-359
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• 2020

Contrast-enhanced ultrasonography (CEUS) has been applied to evaluate parenchymal organs in human and veterinary medicine. However, to our knowledge, there is no report on the identification of active bleeding and the bleeding site in veterinary clinical patients. Herein, we describe the use of CEUS in two cases of abdominal bleeding caused by ruptured lesions with malignant abdominal tumors. One dog had a splenic hemangiosarcoma, which had metastasized to the liver; the other dog had hepatic cell carcinomas in the left hepatic lobe, which were lobectomized, and another nodule was identified in the right hepatic lobe. Immediately after the rupture of these oncogenic lesions was suspected, CEUS was performed to identify the bleeding sites. The active bleeding sites were confirmed by hyperechoic pooling signs in the arterial phase, and extravasation could be observed within the defects showing hypoechoic perfusions in the delayed phase of the CEUS. Microbubbles were also observed in the ascites; thus, CEUS could detect the presence of hemorrhage and accurately identify the bleeding site. Collectively, the study findings suggest the usefulness of CEUS in emergent situations as it enables rapid and noninvasive evaluation of bleeding points in case of active bleeding in dogs.

• Korean Journal of Radiology
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• 제23권8호
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• pp.785-793
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• 2022

Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease involving apocrine-bearing sites. It is characterized by recurrent painful nodules and abscesses that potentially rupture, resulting in sinus tract formation, fistulas, and scarring. HS tends to be found in the intertriginous areas (i.e., the axillary, inguinal, and perianal areas of the body). HS may be uncommon for radiologists because its diagnosis is usually based on clinical assessment. However, diagnosis based solely on clinical manifestations can underestimate the severity of HS. Ultrasonography and MRI play a critical adjunct role in determining the severity and extent of the disease and greatly aid its management. Given that MRI is an effective imaging tool, its role in the analysis of severe and anogenital HS lesions merits considerable attention. Unfortunately, anoperineal HS imposes diagnostic dilemmas. It has multiple symptoms and presentations and often mimics other diseases in the intertriginous areas. Therefore, a thorough understanding of HS is essential to avoid delayed diagnoses. This review highlights the typical MRI imaging features and staging of HS, emphasizing on the anoperineal location. The review also differentiates the disease from mimics to facilitate the prompt delivery of appropriate treatment and improve patients' quality of life.

• Structural Engineering and Mechanics
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• 제91권1호
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• pp.49-61
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• 2024

In recent decades, the majority of studies have concentrated on the utilization of Steel Square Hollow Section (SHS) columns, with minimal attention given to reinforcing columns exhibiting inherent defects. This study addresses this gap by introducing initial vertical and horizontal defects at three distinct locations (top, middle, and bottom) and employing Carbon-FRP for reinforcement. The research investigates the dimensional and positional impacts of these defects on the axial behavior of SHS columns. A total of 29 samples, comprising 17 with defects, 11 strengthened, and 1 defect-free control, underwent examination. The study employed ABAQUS modeling and conducted experimental testing. Results revealed that defects located at different positions significantly diminished the load-bearing capacity and initial performance of the steel columns. Axial loading induced local buckling and lateral rupture, particularly at the defect side, in short columns. Notably, horizontal (across the column's width) and vertical (along the column's height) defects in the middle led to the most substantial reduction in strength and load-bearing capacity. The axial compressive failure increased with the length-to-width ratio of the defect. Moreover, the application of four carbon fiber layers to strengthen the steel columns resulted in increased Energy Dissipation and a delayed onset of local buckling in the face of axial ruptures.

• Journal of Chest Surgery
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• 제40권1호
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• pp.79-82
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• 2007

둔상에 의한 기관-기관지 파열은 발생빈도가 낮은 질환이나, 점차 그 빈도가 증가하는 추세이다. 일단 기관-기관지 파열이 발생하면 매우 심각한 증상을 유발하여 생명의 위협을 초래하고, 많은 합병증을 야기하기 때문에 조기에 진단하여 외과적으로 치료하는 것이 바람직하다 본 저자들은 35세의 남자 환자에서 교통사고 후 발생한 기관 완전 절단의 한 예를 보고하는 바이다. 환자는 수상 후 심한 호흡곤란과 경부, 전흉부에 생긴 피하기종을 주소로 내원하여 양측 긴장성 기흉 진단하에 응급 흉관 삽관술 시행 후에도 대량의 공기 유출이 지속되었고, 피하기종은 복부와 음낭까지 진행되었으며, 호흡부전은 더욱 심화되어 기관-기관지 파열이 강력히 의심되어 응급 수술을 시행하였다. 수술실에서 시행한 술 전 기관지내시경상 성대 하에서 기관의 횡단 절단을 확인하였으며, 수술은 목에 칼라 절개를 가한 후 절단된 기관을 확인하여 4-0 바이크릴(Vicryl) 봉합사를 이용하여 단속봉합에 의한 단단 문합술을 시행하였다. 술 후 흉관을 통한 공기유출은 없었고 기관지내시경 추적 검사상 양호한 소견을 보였으며 특별한 합병증 발병 없이 퇴원하였다.

• Archives of Hand and Microsurgery
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• 제23권4호
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• pp.254-261
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• 2018

목적: 무지 중수 수지 관절의 척측 측부 인대의 만성 파열에서의 직접 봉합술은 양호한 결과가 보고되고 있으나 요측 측부 인대에서의 결과는 논란이 있다. 본 연구의 목적은 무지 중수 관절의 척측과 요측 측부 인대의 만성 파열에서 인대 재부착술의 결과를 비교하는 것이다. 방법: 무지 중수 수지 관절의 6주 이상된 측부 인대 파열에서 봉합 앵커를 이용해서 재부착술을 시행한 요측 6예 및 척측 8예의 평균 22개월 추적한 방사선적 및 임상 결과를 후향적으로 검토하고, 통계적으로 비교하였다. 결과: 수술 후 평균 척측 변위 각은 요측 측부 인대에서 $13.3^{\circ}$, 척측 측부 인대에서 $2.0^{\circ}$였다(p=0.020). 수술 후 인대 불안정성은 요측 인대 6예 중 4예에서 관찰되었으나, 척측 인대에서는 관찰되지 않았다. 수술 후 경과 관찰에서 관절의 아탈구는 요측 인대 2예에서만 관찰되었다. 결론: 무지 중수 수지 관절의 요측 측부 인대의 지연 봉합은 덜 양호한 결과를 나타내며, 반 이상에서는 수술 후 인대의 불안정성이 관찰된다.