1.Descending Necroting Mediastinitis: 1 case report.
Hyong Seok KANG ; Sub LEE ; Oh Choon KWON ; Wook Su AHN ; Chi Hoon BAE
The Korean Journal of Thoracic and Cardiovascular Surgery 2000;33(8):693-696
Descending necrotizing mediastinitis (DNM) is one of the most lethal form of mediastinitis originating from an oropharyngeal infection. It requires an early and aggressive sugical treatment, but the operative approach and optimal form of mediastinal drainage remains controversial. We report a case of DNM in a 45-year-old male who underwent right cervicomediastinotomy to drain the deep neck space, upper mediastinum and anterior mediastinal drainage was accomplished through a subxiphoid approach. After this procedure, he steadily improved and was dischrged on hospital day 36. We report this case with a brief review of the literature.
Drainage
;
Humans
;
Male
;
Mediastinitis*
;
Mediastinum
;
Middle Aged
;
Neck
2.Assessment of Patency of Coronary Artery Bypass Grafts Using Segmented K-space Breath-hold Cine Cardiovascular Magnetic Resonance Imaging: A Clinical Feasibility Study.
Oh Choon KWON ; Sub LEE ; Jong Ki KIM
Journal of the Korean Society of Magnetic Resonance in Medicine 2003;7(1):22-30
PURPOSE: The efficacy of magnetic resonance imaging for evaluating coronary artery disease has been reported. In this study, we evaluated the usefulness of breath-hold segmented K-space cine MR imaging for evaluating the patency of coronary artery bypass grafts (CABG). MATERIALS AND METHODS: Thirty eight patients with a total of 92 CABGs (36 internal thoracic arteries and 56 saphenous vein grafts) were evaluated using segmented Kspace cardiac-gated fast gradient echo sequence (2D-FASTCARD) MR imaging. MR magnitude images were evaluated from the hard copies by two independent observers. A graft was defined as patent if it was seen as a bright small round area on at least two consecutive images throughout the cardiac cycle at a position consistent with the expected location for that graft. RESULTS: MR images were obtained successfully for 23 patients (61%). The sagittal planes were most helpful in visualizing the cross-section of sapheneous vein bypass graft to left circumflex artery branch, whereas the transverse planes were used for identification of internal mammary artery grafts to left anterior descending coronary artery or its branch and identification of saphenous vein grafts to right coronary artery. Forty five grafts were visible using this MR technique, while the grafts were not visible on seven saphenous vein grafts and two internal mammary artery grafts. In two patients showing symptoms of myocardial ischemia, one or two bypass grafts were not visible. Imaging, perpendicular plane to a CABG was important to visualize the flow inside the CABG with maximum sensitivity. CONCLUSION: Evaluation of patency of the bypass graft was clinically feasible by 2DFASTCARD MR imaging, whereas any invisible bypass grafts should be further studied by contrast-enhanced MR angiography or by conventional angiography for confirmation of abnormalities.
Angiography
;
Arteries
;
Coronary Artery Bypass*
;
Coronary Artery Disease
;
Coronary Vessels*
;
Feasibility Studies*
;
Humans
;
Magnetic Resonance Imaging*
;
Mammary Arteries
;
Myocardial Ischemia
;
Saphenous Vein
;
Transplants
;
Veins
3.Huge hematoma in the pelvic cavityafter mechanical valve replacement: A report of case.
Hwa Kyun SHIN ; Nam Hyeuk KIM ; Yong Jae LEE ; Chang Hee KANG ; Oh Choon KWON ; Kihi Roh LEE
The Korean Journal of Thoracic and Cardiovascular Surgery 1993;26(2):158-159
No abstract available.
Hematoma*
4.Floating Thrombus in the Ascending Aorta of the Patient with Systemic Sclerosis: A case report.
Sub LEE ; Jun woo CHO ; Oh Choon KWON
The Korean Journal of Thoracic and Cardiovascular Surgery 2011;44(1):72-75
Aortic thrombi are important because it can cause the central and peripheral embolizations. Aortic thrombi can occur anywhere in the aorta but extremely rare in ascending aorta without atherosclerosis, aneurysm, cardiosurgical or traumatic state. Systemic sclerosis (SSc) is an autoimmune disorder of connective tissue and it can involve multisystem. Enhanced coagulation pathways, decreased fibrinolysis, and endothelial dysfunction probably contribute to vascular events in SSc. We report a case of a highly mobile thrombus in the ascending aorta, presented as an acute embolic stroke in the patient with systemic sclerosis. Surgical removal was performed to prevent recurrent embolic events.
Aneurysm
;
Aorta
;
Atherosclerosis
;
Connective Tissue
;
Fibrinolysis
;
Humans
;
Scleroderma, Systemic
;
Stroke
;
Thrombosis
5.Corrigendum: Moderate and Deep Hypothermia Produces Hyporesposiveness to Phenylephrine in Isolated Rat Aorta.
Jun Woo CHO ; Chul Ho LEE ; Jae Seok JANG ; Oh Choon KWON ; Woon Seok ROH ; Jung Eun KIM
The Korean Journal of Thoracic and Cardiovascular Surgery 2014;47(1):75-75
There was an error in article.
6.Primary Synovial Sarcoma in the Mediastinum: A case report.
Chi Hoon BAE ; Oh Choon KWON ; Sub LEE ; Chang Ho CHO
The Korean Journal of Thoracic and Cardiovascular Surgery 2001;34(5):437-440
Synovial sarcoma is a malignant soft tissue tumor that primarily occurs in the paraarticular regions, especially in the knee. They are composed of keratin-positive epithelial cells and vimentin-positive spindle cells. We report a 76 year old woman with a primary synovial sarcoma in the mediastinum that had severe adhesion to the right side of pericardium. Primary synovial sarcoma in the mediastinum is extremely rare and this is the first case reported in the Korean literature. The mass including the pericardium was resected and the defect was closed with Gore-Tex patch. The patient is well and free of disease 6 months after the operation.
Aged
;
Epithelial Cells
;
Female
;
Humans
;
Knee
;
Mediastinum*
;
Pericardium
;
Polytetrafluoroethylene
;
Sarcoma, Synovial*
7.Effects of filler addition to bonding agents on shear bond strength.
Young OH ; Myung Hwan OH ; Byeong Hoon CHO ; Ho Hyun SON ; Hyuk Choon KWON ; Chung Moon UM
Journal of Korean Academy of Conservative Dentistry 2002;27(1):44-53
No abstract available.
8.Expression of Dopamine D2 Receptor in Response to Apomorphine Treatment in the Striatum of the Rat with Experimentally Induced Parkinsonism.
Seung Jin CHOI ; Jae Hoon SUNG ; Byung Chul SON ; Choon Keun PARK ; Sung Oh KWON ; Moon Chan KIM ; Sang Won LEE
Journal of Korean Neurosurgical Society 2000;29(7):868-876
No abstract available.
Animals
;
Apomorphine*
;
Dopamine*
;
Parkinsonian Disorders*
;
Rats*
;
Receptors, Dopamine D2*
9.Severe Mitral Regurgitation due to Traumatic Anterolateral Papillary Muscle Rupture: A Case Report.
Chul Ho LEE ; Oh Choon KWON ; Sub LEE ; Jae Seok JANG
The Korean Journal of Thoracic and Cardiovascular Surgery 2012;45(6):401-403
A 29-year-old man was admitted for abrupt dyspnea and hemoptysis. An echocardiogram revealed severe mitral regurgitation due to papillary muscle rupture for which an emergency mitral valve replacement operation was performed 4 days after admission. Herein, we report our experience with this case along with a review of the literature.
Adult
;
Dyspnea
;
Emergencies
;
Hemoptysis
;
Humans
;
Mitral Valve
;
Mitral Valve Insufficiency
;
Papillary Muscles
;
Rupture
10.Traumatic Aortic Injury: Single-center Comparison of Open versus Endovascular Repair.
Jun Woo CHO ; Oh Choon KWON ; Sub LEE ; Jae Seok JANG
The Korean Journal of Thoracic and Cardiovascular Surgery 2012;45(6):390-395
BACKGROUND: Conventional open repair is a suboptimal therapy for blunt traumatic aortic injury (BTAI) due to the high postoperative mortality and morbidity rates. Recent advances in the thoracic endovascular repair technique may improve outcomes so that it becomes an attractive therapeutic option. MATERIALS AND METHODS: From August 2003 to March 2012, 21 patients (mean age, 45.81 years) with BTAI were admitted to our institution. Of these, 18 cases (open repair in 11 patients and endovascular repair in 7 patients) were retrospectively reviewed and the early perioperative results of the two groups were compared. RESULTS: Although not statistically significant, there was a trend toward the reduction of mortality in the endovascular repair group (18.2% vs. 0%). There were no cases of paraplegia or endoleak. Statistically significant reductions in heparin dosage, blood loss, and transfusion amounts during the operations and in procedure duration were observed. CONCLUSION: Compared with open repair, endovascular repair can be performed with favorable mortality and morbidity rates. However, relatively younger patients who have acute aortic arch angulation and a small aortic diameter may be a therapeutic challenge. Improvements in graft design, delivery sheaths, and graft durability are the cornerstone of successful endovascular repair.
Aorta
;
Aorta, Thoracic
;
Endoleak
;
Heparin
;
Humans
;
Paraplegia
;
Retrospective Studies
;
Transplants