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입학전형요소와 학업성취도 사이의 상관관계 : 일개 의학전문대학원을 대상으로 한 연구
류동열,조도상,정순섭,박혜숙,한후재 이화여자대학교 의과대학 2009 EMJ (Ewha medical journal) Vol.32 No.1
This study was performed to provide information on the relationship between admission criteria and medical school performance (MSP). Seventy six medical students admitted to the Ewha School of Medicine in 2007 were enrolled. The admission criteria included the undergraduate grade point average (GPA), medical education eligibility test (MEET), essay, letters of recommendation, and admission interview score. MSP was measured by GPA. Standard tests of bivariate correlation and multivariate regression analysis were used to examine the relationship between multiple factors of admission criteria and MSP for the first two years after admission. Among the admission criteria, scores of undergraduate GPA, essay, and letters of recommendation were significantly correlated with MSP. Admission interview score, however, had no correlation with MSP. Although total MEET score was not related with MSP as well, science reasoning-2 demonstrated significant correlation with MSP. Further studies will be needed to define the clear relationship between various admission criteria and MSP.
Progression Rate of Aortic Valve Stenosis in Korean Patients
류동열,박성지,한혜진,이현종,장성아,최진오,이상철,박승우,오재건 한국심초음파학회 2010 Journal of Cardiovascular Imaging (J Cardiovasc Im Vol.18 No.4
Background: Although there were studies about ethnic differences in aortic valve thickness and calcification that they may play a role in aortic valvular stenosis (AVS) progression, few studies about the progression rate of AVS in Asian population have been reported. The purpose of this study was to evaluate the progression rate of AVS in Korean patients. Methods: We retrospectively analyzed 325 patients (181 men, age: 67 ± 13 years) with AVS who had 2 or more echocardiograms at least 6 months apart from 2003 to 2008. The patients with other significant valvular diseases or history of cardiac surgery were excluded. The progression rate of AVS was expressed in terms of increase in maximum aortic jet velocity per year (meter/second/year). Results: Baseline AVS was mild in 207 (64%), moderate in 81 (25%), and severe in 37 (11%). There were no significant differences among the three groups in terms of age, gender, hypertension, smoking, and hypercholesterolemia. The mean progression rate was 0.12 ± 0.23 m/s/yr and more rapid in severe AVS (0.28 ± 0.36 m/s/yr) when compared to moderate (0.14 ± 0.26 m/s/yr) and mild AVS (0.09 ± 0.18 m/s/yr) (p < 0.001). The progression rate in bicuspid AVS was significantly higher than other AVS (0.23 ± 0.35 vs. 0.11 ± 0.20 m/s/yr, p = 0.002). By multivariate analysis, initial maximum aortic jet velocity (Beta = 0.175, p = 0.003), bicuspid aortic valve (Beta = 0.127, p = 0.029), and E velocity (Beta = -0.134, p = 0.018)were significantly associated with AVS progression. Conclusion: The progression rate of AVS in Korean patients is slower than that reported in Western population. Therefore,ethnic difference should be considered for the follow-up of the patients with AVS.
류동열,최규복,박정탁,정정화,송은미,노선희,이정민,안혜림,유민아,편욱범,신길자,김승정,강덕희 연세대학교의과대학 2011 Yonsei medical journal Vol.52 No.4
Purpose: Cardiac troponin T (cTnT), a useful marker for diagnosing acute myocardial infarction (AMI) in the general population, is significantly higher than the usual cut-off value in many end-stage renal disease (ESRD) patients without clinically apparent evidence of AMI. The aim of this study was to evaluate the clinical usefulness of cTnT in ESRD patients with acute coronary syndrome (ACS). Materials and Methods: Two hundred eighty-four ESRD patients with ACS were enrolled between March 2002 and February 2008. These patients were followed until death or June 2009. Medical records were reviewed retrospectively. The cut-off value of cTnT for AMI was evaluated using a receiver operating characteristic (ROC) curve. We calculated Kaplan-Meier survival curves, and potential outcome predictors were determined by Cox proportional hazard analysis. Results: AMIs were diagnosed in 40 patients (14.1%). The area under the curve was 0.98 in the ROC curve (p<0.001; 95% CI, 0.95-1.00). The summation of sensitivity and specificity was highest at the initial cTnT value of 0.35 ng/mL (sensitivity, 0.95; specificity,0.97). Survival analysis showed a statistically significant difference in all-cause and cardiovascular mortalities for the group with an initial cTnT ≥0.35 ng/mL compared to the other groups. Initial serum cTnT concentration was an independent predictor for mortality. Conclusion: Because ESRD patients with an initial cTnT concentration ≥0.35 ng/mL have a poor prognosis, it is suggested that urgent diagnosis and treatment be indicated in dialysis patients with ACS when the initial cTnT levels are ≥0.35 ng/mL.