• 한국임상수의학회지
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• 제18권4호
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• pp.402-410
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• 2001

This study was performed to investigate the hemodynamic changes which occur after occlusion of coronary artery and relation to reperfusion arrhythmias(RA) which occur when occlusion materials were removed form coronary artery in dogs. The occlusion of coronary artery was designed by temporary ligation of left circumflex branch of coronary artery during 30 minutes in 16 dogs. During occlusion of coronary artery, cardiac output(CO), mean aortic pressure (mAP), aortic systolic pressure(ASP), aortic diastolic pressure(ADP). left ventricular systolic pressure(LVSP), left ventricular maximum dp/dt (LV max. dp/dt) and left ventricular end-diastolic pressure (LVEDP) were measured. The occurrence of RA were observed for 5 minute after reperfusion by explained of ligation. As a results, cardiac arrest occurred in 4 dogs during occlusion of coronary artery, and RA was not observed in 5 dogs while it was seen in 5 dogs when explained ligation(reperfusion) after 30 minutes, the rest 2 dogs occurred temporary tachycardia. In hemodynamics changes, LVSP decreased by 10.9% and LV max. dp/dt by 5.4 % in comparison to control value which not ligated coronary artery, and LVEDP increased by 73.3%. The CO/min and mAP also decreased by 10.7% and by 11.3% expectedly. In the relationship to occurrence RA and hemodynamics changes, the LVSP and LV max. dp/dt at the time of occlusion in the RA group decreased by 11.9% and 0.8% in comarison to the control value while the decrease was 7.7% and 10% in the non-RA group. But the LVEDP in creased by 109.1% in the RA group while the decreased was 44.6% in the non-RA group. Referring CO/min, the drop was 8.8% in the RA occurrence group and 12.9% in the non-occurence group. These parameters of LVEDP, LV max. dp/dt, and CO were significant difference(p<0.05). The mAP also decreased by 11.9 in the RA group and by 9.8% in the non-RA group, but these defference were not the significant difference.

• Journal of Chest Surgery
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• 제47권4호
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• pp.402-405
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• 2014

Myocardial infarction (MI) secondary to coronary artery fistula and the subsequent occlusion of the distal right coronary artery (RCA) after blunt chest trauma is a rare entity. Here, we describe a case of coronary artery fistula and occlusion with an inferior MI that occurred following blunt chest trauma. At the initial visit to the emergency room after a car accident, this patient had been undiagnosed with acute myocardial infarction, readmitted five months after ischemic insult, and revealed to have experienced MI due to RCA-right atrial fistula and occlusion of the distal RCA. He underwent coronary surgery and recovered without complications.

• Journal of Chest Surgery
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• 제28권7호
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• pp.708-712
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• 1995

We report two cases of angioplasty of the left main coronary artery for isolated left main coronary artery disease. One was 63-years old male with 90% occlusion of the left main coronary artery and the other was 64-years old male with 80% occlusion of the left main coronary artery. We have performed left main coronary artery angioplasty with pericardium. The postoperative courses were uneventful and good without specific complications.

• The Korean Journal of Physiology and Pharmacology
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• 제23권1호
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• pp.71-79
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• 2019

Body surface potential map, an electric potential distribution on the body torso surface, enables us to infer the electrical activities of the heart. Therefore, observing electric potential projected to the torso surface can be highly useful for diagnosing heart diseases such as coronary occlusion. The BSPM for the heart of a patient show a higher level of sensitivity than 12-lead ECG. Relevant research has been mostly based on clinical statistics obtained from patients, and, therefore, a simulation for a variety of pathological phenomena of the heart is required. In this study, by using computer simulation, a body surface potential map was implemented according to various occlusion locations (distal, mid, proximal occlusion) in the left anterior descending coronary artery. Electrophysiological characteristics of the body surface during the ST segment period were observed and analyzed based on an ST isointegral map. We developed an integrated system that takes into account the cellular to organ levels, and performed simulation regarding the electrophysiological phenomena of the heart that occur during the first 5 minutes (stage 1) and 10 minutes (stage 2) after commencement of coronary occlusion. Subsequently, we calculated the bipolar angle and amplitude of the ST isointegral map, and observed the correlation between the relevant characteristics and the location of coronary occlusion. In the result, in the ventricle model during the stage 1, a wider area of ischemia led to counterclockwise rotation of the bipolar angle; and, during the stage 2, the amplitude increased when the ischemia area exceeded a certain size.

• Journal of Chest Surgery
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• 제40권11호
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• pp.773-776
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• 2007

47세 남자 환자로 양측 하지의 파행을 주소로 내원하였는데 심한 흡연력, 당뇨와 고혈압을 가지고 있었다. 평소 허혈성 심질환의 증상과 뇌혈류의 역류로 인한 증상은 없었지만 상 하지 혈관조영술과 동시에 시행한 관상동맥조영술 검사에서 좌측쇄골하동맥 폐색을 포함한 말초혈관질환과 관상동맥에 심한 협착이 관찰되었다. 수술은 좌측 늑강을 경유한 상행대동맥-좌액와동맥 혈관우회술을 시행 후 우내흉동맥을 좌전하행지에 문합하고 복재정맥을 사선지와 인조혈관에 문합하였다. 하지 말초혈관의 폐색은 술 후 18일에 혈관우회술로 교정되었고 결과는 양호하였다.

• Journal of Chest Surgery
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• 제30권8호
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• pp.823-826
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• 1997

심근 농양은 대개 감염성 심내막염이나 패혈증의 합병증으로 생길 수 있다. 심근 농양이 관상 동맥을 압박 하여 심근 허혈을 초래한 경우는 1987년 Cripps 등이 보고한 이래 5-6례 있을뿐이다. 61세 남자 환자가 내원 6주 전부터 시작된 원인을 알 수 없는 발열과 오한을 주소로 내원하였다. 환자는 발열이 시작된지 2주후에 심실 세동 및 이로 인한 심장 마비로 심폐소생술을 시행받은 병력이 있었다. 심에코와 관상동맥 조영 결과 우측 방실구 부위의 심근 농양이 우관상동맥을 외부에서 압박하면서 심근 경색을 초래한 소견을 보였다. 수 술은 농양을 변연 절제하였으며 괴사된 심방벽을 절제한 후 생긴 결손은 자가 심낭을 이용한 patch로 폐쇄하 였고 우측 내유동맥을 우관상동맥의 원위부에 문합하였다. 환자는 합병증없이 퇴원하였으며 수술 중 검체에 서 시행한 농양배양 검사에서는 Salmonella arizona가 동정되었다.

• Journal of Chest Surgery
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• 제40권6호
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• pp.445-447
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• 2007

관상동맥 개구부의 폐쇄, 특히 우관상판첨에 의한 경우는 매우 드물다. 저자들은 류마티스성 대동맥판막협착증과 함께 우관상판첨이 대동맥 벽에 유착되면서 발생한 우관상동맥 개구부 폐쇄를 경험하였다. 수술 시 유착된 우관상판첨을 절제한 후 우관상동맥 개구부는 폐쇄가 없음을 확인할 수 있었고 다른 판첨들을 제거한 후 기계판막을 이용하여 대동맥 판막 치환술을 시행하였다. 환자는 양호한 상태로 외래에서 추적관찰중이다.

• Journal of Chest Surgery
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• 제30권3호
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• pp.326-329
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• 1997

관상동맥 우회수술은 일반적으로 저체온하에 인공심폐기를 사용하여 체외순환을 하면서 심정지상태에서 시행하는 것이 일반적 인 방법이다. 그러나 선택적 인 병변에 한 하여는 체 외순환을 하지 않고 정상적인 심박동 상태에서 관상동맥 우회 술을 사용하는 방법이 시도되고 있다. 저자들은 우관상동맥에 100%협착을 보이고 경미한 운동시 심한 흉통을 호소한 환자에서 체외순환 없이 관상동맥 우회 술을 성공적으로 시행하였기 에 문헌고찰과함께 보고하는 바이다.

• Journal of Chest Surgery
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• 제33권6호
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• pp.487-493
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• 2000

Background: Early patency of the coronary artery bypass grafting is determined mainly by surgical technique and status of coronary artery. We analyzed the early result, focusing on the relationship between postoperative angiographic findings and the patency rate. Material and method: During the period of July 1997- August 1999, 86 cases of CABG were performed and the postoperative coronary artery angiography was done in 76 cases on postoperative day 7 to assess the graft patency. Result: Overall graft patency was 90.2% on the angiographic finding. Factors influencing the early graft occlusion were the surgeon's experience, small coronary artery size less than 1.5mm in diameter, coronary arteries related to pre-operative myocardial infarction, and local atheroma at the anastomosis site(p<0.001). Operative mortailty was 2.3%. Early recurrence of the symptom was 19.8% during the follow up period. Conclusion: We examined the postoperative coronary angiography and found that the surgeon's experience, small coronary artery size less than 1.5mm in diameter, bypass surgery on the coronary arteries related to pre-operative myocardial infarction, and local atheroma at the anastomosis site were the factors for the graft occlusion.

• Journal of Chest Surgery
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• 제20권2호
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• pp.342-347
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• 1987

Complete occlusion of the main LCA is associated with a poor prognosis if the RCA becomes severely occluded. The functional role of collateral circulation is critical in this situation. This study lends support to the hypothesis that coronary collateral circulation can provide critically needed myocardial blood flow via right to left collaterals. Not surprisingly, left ventricular function was maintained in 4 of the 5 patients studied who had main LCA occlusion and well-developed collateral circulation.