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조한표,이숙진,신대희,최성일,한 호,이 상,김순길,김경수,임헌길,김정현,이방헌,이정균 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.2
Left ventricular pseudoaneurysm is defined as a rupture of the myocardium that is contained by pericardial adhesion or the epicardial wall. The etiology of pseudoaneurysm are mainly transmural myocardial infarction, various type of cardiac surgery, blunt or penetrating chest trauma, infection (endocarditis, myocarditis, tuberculosis, syphilis). Although LV pseudoaneurysm is clinically uncommon, diagnosis is difficult and rupture often leads to death. Therefore, a surgical repair is necessary in most cases of left ventricular pseudoaneurysm. It is important to have a high clinical index of suspicion, because the symptoms, signs, electrocardiographic abnormalities and radiographic findings seen in LV psuedoaneurysm can be indistinguishable from those in patients with coronary disease alone. We report a case of 64-year-old male with coronary artery disease of 3 vessel and symptomatic left ventricular pseudoaneurysm after myocardial infarction.
On some properties of Fuzzy congruence relations
Sung, Yeoul Ouk,Cho, Han Pyo 公州大學校 基礎科學硏究所 1999 自然科學硏究 Vol.8 No.-
본 논문에서는 반군에서의 크리스합동관계와 퍼지합동관계에 관한 하반근사 및 상반근사의 일부 성질을 조사하였고, 또한 퍼지합동관계와 fuzzy difunctional relation사이의 관계를 특성화하였다. In this thesis, we investigate some properties of the lower and upper approximation with respect to the congruences and the fuzzy congruences on a Semigroup. Also, we study a relation between fuzzy congruences and fuzzy difunctional relations.
수술 전 심장기능 평가에 있어 심근관류 SPECT의 유용성
신대희,조한표,최성일,이숙진,이 상,이재웅,김경수,김순길,김정현,임헌길,이방헌,이정균,최윤영 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.2
Background/Aims: The preoperative cardiac evaluation is important to predict perioperative cardiac event in patients who planned for non-cardiac operation. However, the usefulness of cardiac SPECT and/or evaluation of patient with clinical criteria is not clear. Therefore we evaluate the prognostic value of cardiac SPECT in surgical patients. And also compare the result of clinical risk stratification using the ACC/AHA guidelines with those of cardiac SPECT. Methods: 75 patients(M:F=31:44, 62.8±9.2 years), who have chest pain, EKG abnormality or history of ischemic heart disease were enrolled to the study. According to the result of cardiac SPECT, they were divided to 3 groups: normal perfusion(n=51), reversible perfusion defect(n=31), irreversible perfusion defect(n=3). Also we divided 3 groups according to clinical predictors of the ACC/AHA guidelines: minor risk group(n=51), intermediate risk group(n=21), and major risk group(n=3). I compare predictive power of perioperative cardiac event between cardiac SPECT and clinical predictors of the ACC/AHA guidelines. Results: Cardiac event occurred in 9.2% of patient. Prevalence of cardiac event in reversible cardiac perfusion group(19.0%) and irreversible cardiac perfusion group(33.3%) was higher than normal group(3.8%)(p〈0.05). By clinical predictors according to the ACC/AHA guidelines, I could not predict the postoperative cardiac event. Conclusion: Cardiac SPECT is more useful than clinical predictors according to the ACC/AHA guidelines in preoperative cardiac evaluation in patients with chest pain, EKG abnormality or history of ischemic heart disease.