• The Korean Journal of Health Service Management
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• v.13 no.2
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• pp.107-119
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• 2019

Objectives: This study is a descriptive research to investigate the predictors of intention to quit smoking in patients with acute coronary syndrome(ACS). Methods: A total of 192 ACS patients hospitalized for an angiogram during symptom management were conveniently recruited from a university hospital cardiovascular care unit. Data were collected from January to December in 2018 and were analyzed using binominal logistic regression. Results: The predictors of intention to quit smoking in patients with ACS were drinking(odds ratio[OR]=0.315, p=.006), experience of smoking cessation education(OR=0.325, p=.007), depression(OR=0.739, p<.001), and smoking-related self-efficacy(OR=1.091 p=.006). Conclusion: The findings suggest that the alleviation of depression and enhancement of smoking-related self-efficacy can prevent recurrence and enhance the treatment of ACS.

• Journal of Chest Surgery
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• v.42 no.2
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• pp.252-255
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• 2009

We performed a hybrid procedure for a 58-year-old man with coronary artery disease and a left subclavian artery stenosis. He underwent left subclavian artery stenting and off-pump coronary artery bypass surgery, including grafting the in situ left internal mammary artery to the left anterior descending coronary artery. The post-operative coronary angiogram and computed tomography showed good patency of the graft and stent. He discharged at postoperative 8 days and he has been followed up for six month with an excellent clinical condition.

• Proceedings of the KSME Conference
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• 2003.11a
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• pp.753-758
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• 2003

The purpose of the present study was to establish the mechanism of the generation of atherosclerosis by analyzing the hemodynamic variables in the coronary artery where atherosclerosis occurs frequently. From the previous results, the stenosis phenomena due to atherosclerosis were related to not only biochemical reaction between blood and blood vessel but also the hemodynamic factors like flow separation and oscillatory wall shear stress. The present study aimed to investigate the causes of the generation and progression of atherosclerosis in the coronary artery. This study also aimed to develop the softwares which generate automatically three dimensional vascular models obtained by the angiogram images and the computer vision techniques. In the present study, the flow patterns for full three-dimensional hemodynamic characteristics were analyzed. To understand the three-dimensional hemodynamic characteristics, the wall shear stress distributions and secondary flows were investigated quantitatively.

• Journal of Chest Surgery
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• v.33 no.2
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• pp.167-172
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• 2000

Background: As the internal mammary artery is far superior to the vein in the patency rate recently there has been a tendency to use the arterial graft as much as possible in coronary artery bypass grafts with the expectation of better the short- and long-term patency rate. Material and Method: We sequentially grafted the diagonal and the left anterior descending artery significantly influencing the cardiac function with the internal mammary artery. There were 32 cases of sequential grafts from July 1993 to December 1998: 21 men and 11 women. The age range was from 43 to 69 years with a mean age of 56.64$\pm$6.41 years. There were 22 unstable angina 7 stable angina and 3 acute myocardial infarction. 8 cases of them were accompanied by stenosis of the left main coronary artery. The grafts for coronary artery bypass surgery included the great saphenous vein at 60 the right gastroepiploci artery at 5 and the left internal mammary artery at 64 coronary arteries. Result: One patient died from sepsis and multiorgan failure. Complications included wound infections in two cases and gastrointestinal bleeding in one patient. All patients showed decrease or disappearance of angina after operation. The postoperative coronary angiogram performed in 9 patients showed neither occlusion nor stenosis of the grafts. Conclusion: This study suggests that sequential anastomosis of the internal mammary artery to the diagonal and the left anterior descending artery may result in excellent short-term patency diagonal and the left anterior descending artery may result in excellent short-term patency rate and be useful for the coronary artery bypass graft using only arterial grafts

• Journal of Chest Surgery
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• v.23 no.5
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• pp.944-952
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• 1990

In 1989, We experienced 2 cases of T.A.P.V.D. corrected successfully under cardiopulmonary bypass. The first case was 27 years old male with mild dyspnea on exertion and easy fatigability. All clinical symptoms, physical examinations, laboratory findings, echocardiogram, cardiac catheterization and angiogram revealed supracardiac type T.A.P.V.D. drained through left innominate vein. Operation was done by manner of modified Schumacker procedure. The other case was 6 years old male with cardiac type drained to right atrium through coronary sinus. Two patients were well in postoperative 15 and 8 months.

• Proceedings of the KTCVS Conference
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• 1996.10a
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• pp.138-138
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• 1996

• Journal of Chest Surgery
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• v.26 no.6
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• pp.452-456
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• 1993

From January 1990 to May 1993, 32 patients were underwent aortocoronary bypass with venous conduit using saphenous vein at Department of Thoracic and Cardiovascular Surgery, Masan Koryo General Hospital. There were 19 men, 13 women and a mean age was 57.8 years[range from 46 to 68]. The involved risk factors were as follows: smoking 15 cases, hypertension 14 cases, diabetic mellitus 6 cases, cholesterol[>240mg/dl] 13 cases, and triglyceride[>180mg/dl] 11 cases. The preoperative clinical status were chronic stable angina 4 cases, unstable angina 24 cases and myocardial infarction 4 cases. At angiogram, numbers that involved in coronary artery of narrowing more than 50% luminal diameter were 54 vessels[left anterior descending 30, right coronary artery 17, circumflex 7]. We performed 53 grafts in32 patients, average was 1.7 grafts per patient, 16 patients were single bypass, 11 patients were double bypass and 5 patients were triple bypass. The overall postoperative mortality was 3 %.

• Journal of Chest Surgery
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• v.22 no.5
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• pp.748-752
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• 1989

We experienced 6 patients with the sinus Valsalva aneurysm rupture during last 12 years [Jan. 1977-Sep. 1989]. Of them. 5 cases were reviewed. They consist of 3 males and 2 females, and the age ranged from 12 years to 40 years with the mean age of 25 years. 4 patients showed congestive heart failure symptoms. The diagnosis was made by 2D-Echo and cine-angiogram. In 4 patients. sinus Valsalva aneurysm ruptured from the Rt. coronary sinus to the Rt. ventricle, and in one from non-coronary sinus to the Rt. atrium. In 2 cases, resection of the aneurysm and simple stitch closure was made. Resection of the aneurysm k patch closure and AVR in one, closure of the fistula, AVR and patch closure of the associated VSD in one, and closure of the fistula, AVR k TVR in one were made in another 3 cases. There was no postoperative mortality case.

• Journal of Chest Surgery
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• v.43 no.2
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• pp.204-207
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• 2010

A 68 year-old man visited our institution due to chest pain. Coronary angiography revealed triple vessel disease. A computed tomographic angiogram performed as a routine preoperative examination demonstrated an intraluminal spider-web-like mass from the infrarenal abdominal aorta to both common iliac arteries. The infrarenal aorta and both common iliac arteries were excised and replaced with concomitant off-pump coronary artery bypass grafts. Histologic examination of the aorta suggested an intimal sarcoma. A postoperative computed tomographic angiogram performed 3 months postoperatively showed no evidence of a residual or a recurred lesion.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.1661-1664
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• 2005

본 논문에서는 computer-aided analysis 의 일환으로 X-ray 심혈관 조영도를 이용하여 관상동맥의 구조를 보여주는 방법에 대해 제시하고자 한다. 관상동맥 폐색증 환자들에게 시술되는 스텐트 삽입 시술이나 관상동맥 우회로 시술을 할 때에는 X-ray 의 조영 영상이 매우 중요한 시술의 기준이 되고 있으며, 조영 영상에서 혈관을 빠르고 정확하게 인식하는 것은 시술의 필수 조건이다. 이러한 시술중의 혈관구조 인식을 돕기 위하여 본 논문에서는 심혈관 조영 영상으로부터 관상동맥의 골격을 추출하기 위한 방법을 제안한다. 본 논문에서는 혈관 구조 추출을 위하여 3 단계 알고리즘을 제시한다. 첫번째 단계에서는 조영도에서 잡음을 제거하기 위하여 동질영역을 블러링할 수 있는 speckle reducing anisotropic diffusion 을 이용한 이미지 필터링을 수행한다. 이 필터링은 영상내 잡음을 제거하고 혈관의 경계선을 강화하여 정확한 영상인식을 가능하게 한다. 두번째 단계에서는 영상 내에서 보여지는 주요 혈관을 분할하는 것이다. 이 영상분할에는 canny edge detection 과 개선된 영역확장법(adaptive region growing)을 동시에 이용하는 복합적 분할기법이 수행된다. 세번째 단계에서는 형태학적 기법(Morphology)을 이용하여 분할결과의 부족한 부분을 보완하고 골격화를 수행하여 정확한 혈관 구조를 추출해낸다. 실험을 위해서는 정상인의 관상동맥 영상 뿐 아니라 혈관이 가늘어지는 폐색이 관찰되는 환자의 영상에 대해서도 실험하였다. 또한 논문에서 제시한 알고리즘에 대한 검증을 위하여 실험 결과들은 의료진의 감수를 거쳤다.