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Park, Subin,Lee, Yeeun,Jun, Jin Yong Elsevier/North Holland Biomedical Press 2017 Psychiatry research Vol.257 No.-
<P><B>Abstract</B></P> <P>North Korean adolescent defectors experience adaptation difficulties along with a wide range of psychosocial problems, but no study has yet examined their Internet addiction symptoms. We compared early traumatic experiences, self-esteem, negative cognition, and Internet addiction symptoms, as well as the relationships between these variables, between North Korean adolescent defectors and South Korean adolescents. Fifty-six North Korean adolescent defectors and 112 age- and sex- matched South Korean adolescents participated. The analyses examined the relationship between traumatic experiences and Internet addiction symptoms, with negative automatic thoughts or low self-esteem as mediators of these relations. North Korean adolescent defectors tended to have higher levels of negative automatic thoughts and more severe Internet addiction symptoms, as well as better self-esteem, than did South Korean adolescents. Furthermore, only among North Korean adolescent defectors, traumatic experiences were positively associated with Internet addition symptoms via increasing negative automatic thoughts. North Korean adolescent defectors are more susceptible to Internet addiction, negative cognitions, and early traumatic experiences compared to South Korean adolescents. However, the cross-sectional design of this study precludes consideration of the causality of these relationships. Interventions aiming to correct negative cognitions and increase self-esteem may be helpful for North Korean adolescent defectors with problematic Internet use.</P> <P><B>Highlights</B></P> <P> <UL> <LI> North Korean adolescent defectors had higher trauma and Internet addiction (IA). </LI> <LI> North Korean defectors also had greater self-esteem and negative automatic thoughts. </LI> <LI> Self-esteem and negative thoughts were mediators in the relation of trauma and IA. </LI> <LI> Country of origin (North vs. South Korea) moderated the mediating effects. </LI> </UL> </P>
Ki, Y.J.,Choi, D.H.,Lee, Y.M.,Lim, L.,Song, H.,Koh, Y.Y. Elsevier/North-Holland Biomedical Press 2014 INTERNATIONAL JOURNAL OF CARDIOLOGY Vol.175 No.3
Objective: The aim of this study was to determine the associations of brachial-ankle pulse wave velocity (baPWV), high-sensitivity cardiac troponin T (hs-cTnT) and N-terminal pro-B type natriuretic peptide (NT-proBNP) with the development of adverse outcomes after percutaneous coronary intervention (PCI). Methods: The baPWV, hs-cTnT and NT-proBNP were analyzed in 372 patients who underwent PCI. The primary endpoint was cardiac death. Results: There were 21 events of cardiac death during a mean of 25.8months of follow-up. When the baPWV cut-off level was set to 1672cm/s using the receiver operating characteristic curve, the sensitivity was 85.7% and the specificity was 60.1% for differentiating between the group with cardiac death and the group without cardiac death. Kaplan-Meier analysis revealed that the higher baPWV group (≥1672cm/s) had a significantly higher cardiac death rate than the lower baPWV group (<1672cm/s) (11.4% vs. 1.4%, log-rank: P<0.0001). This value was more useful in patients with myocardial injury (hs-cTnT≥0.1ng/mL) or heart failure (NT-proBNP≥450pg/mL). Conclusions: The results of this study show that high baPWV is a predictive marker for cardiac death after PCI.
Lee, J.M.,Park, J.,Kang, J.,Jeon, K.H.,Jung, J.h.,Lee, S.E.,Han, J.K.,Kim, H.L.,Yang, H.M.,Park, K.W.,Kang, H.J.,Koo, B.K.,Kim, S.H.,Kim, H.S. Elsevier/North-Holland Biomedical Press 2015 INTERNATIONAL JOURNAL OF CARDIOLOGY Vol.184 No.-
Background: Studies have reported conflicting results regarding efficacy of mechanical hemodynamic support using intra-aortic balloon pump (IABP) or percutaneous ventricular assisted device (pVAD) in patients undergoing high-risk PCI. We performed a Bayesian network meta-analysis comparing the safety and efficacy of mechanical hemodynamic support devices and medical therapy (MT). Methods and results: RCTs comparing overall mortality of IABP versus MT or IABP versus pVAD in high-risk PCI populations were included. The primary endpoint was overall mortality, using the longest available follow-up in each study. This analysis included 2843 patients from 13 trials. In network meta-analysis, overall survival benefit was not significant with IABP (RR 0.84, 95% CrI 0.56-1.24) or pVAD (RR 0.95, 95% CrI 0.42-2.06), compared with MT. IABP or pVAD also did not show early survival benefit compared with MT. In terms of bleeding, pVAD was the worst (versus IABP: RR 29.4, 95% CrI 5.99-221.0; versus MT: RR 41.7, 95% CrI 8.19-330.0), which was mainly driven by the higher incidence of bleeding in the ECMO and TandemHeart, while IABP was worse than MT (RR 1.41, 95% CrI 1.01-2.08). The incidence of acute limb ischemia or vascular complication was not different between treatment groups. Conclusions: In this meta-analysis, routine elective use of IABP or pVAD did not reduce mortality, while it increased bleeding, compared with MT in high-risk PCI population or even in the patients with cardiogenic shock. Thoughtful selection of appropriate patients and balancing the risk and benefit should be the prerequisites to the use of mechanical hemodynamic support devices.
Shin, S.Y.,Park, J.I.,Park, S.K.,Barrett-Connor, E. Elsevier/North-Holland Biomedical Press 2015 INTERNATIONAL JOURNAL OF CARDIOLOGY Vol.181 No.-
Background: Exercise electrocardiography in asymptomatic adults has been criticized because of relatively poor accuracy predicting future heart disease risk, but studies may have been too short. We investigated if integrated analysis of graded exercise tolerance tests (GXT) predicted long-term coronary heart disease (CHD) and all-cause mortalities among community-dwelling older adults. Methods and results: From 1972 to 1974, 1789 adult residents of a predominantly Caucasian, middle- to upper-middle-class southern California community participated in a clinical evaluation that included a GXT; 52.4% (N=939) of those who had baseline GXT were followed up to 2010-up to 36years-for vital status, CHD and all-cause mortality. Multiply adjusted hazard ratios of an abnormal graded GXT were 1.65 (95% CI 0.78-3.49) and 1.56 (95% CI 1.15-2.11) for CHD and all-cause mortality, respectively. An integrated analysis hazard ratio was calculated based on the following GXT findings: significant ST change, inability to achieve target heart rate [THR], abnormal heart rate recovery [HRR], and chronotropic incompetency [ChI]. Compared to those with 0 or 1 abnormality, participants with 2 or more positive findings had significantly higher CHD (HR 2.18) and all-cause (HR 1.92) mortalities. Participants with 3 or more positive findings showed even higher hazard ratios-CHD (HR 6.16) and all-cause (HR 2.49) mortalities. When adjusted for any of 3 Framingham risk models, the integrated electrocardiographic model correlated well with CHD and all-cause mortalities. Conclusions: An integrated analysis of electrocardiographic and non-electrocardiographic measures of GXT is useful in predicting long-term CHD and all-cause mortalities in an asymptomatic middle-aged population.
Kang, D.O.,Seo, H.S.,Choi, B.G.,Lee, E.,Kim, J.P.,Lee, S.K.,Im, S.I.,Na, J.O.,Choi, C.U.,Lim, H.E.,Kim, J.W.,Kim, E.J.,Rha, S.W.,Park, C.G.,Oh, D.J. Elsevier/North-Holland Biomedical Press 2015 INTERNATIONAL JOURNAL OF CARDIOLOGY Vol.179 No.-
Background: Major adverse cardiovascular events (MACEs) in patients with or without cardiovascular disease (CVD) are greatly affected by various factors associated with metabolism and inflammation. Objective: To determine which clinical parameters at treatment are associated with the development of 2-year and 5-year MACEs in high-risk patients with CVD who have undergone drug-eluting stent (DES) implantation. Method: The present study involved a total of 432 patients who underwent percutaneous coronary intervention with DES. Variables representing the average and absolute amount of change in clinical parameters over the 12-month follow-up were assessed for association with 2-year and 5-year development of MACE. The study population was divided into quartiles for the variable showing the highest correlation to MACE development. Estimated incidence of 2-year and 5-year MACEs for each of the quartiles was determined by survival curve analysis, and subgroup analysis was performed for patients with diabetes and statin users. Results: Absolute change in fasting plasma glucose (FPG) over 12months showed the highest correlation with 2-year and 5-year MACE development. The estimated incidence of MACE increased with increasing quartiles for absolute change in FPG. The association between absolute change in FPG and MACE development exhibited a stronger relationship for the specific subgroups of patients with diabetes and statin users. Increases and decreases in FPG had a comparable contribution to MACE development. Conclusion: A greater absolute change in FPG over 12months post-PCI is an independent risk factor for 2-year and 5-year MACE development in DES-implanted patients, especially in the diabetes and statin users.
Association between aortic calcification and stable obstructive coronary artery disease
Kim, E.J.,Yong, H.S.,Seo, H.S.,Lim, S.Y.,Kim, S.W.,Kim, M.N.,Kim, Y.K.,Poddar, K.L.,Ramasamy, S.,Na, J.O.,Choi, C.U.,Lim, H.E.,Kim, J.W.,Kim, S.H.,Lee, E.M.,Rha, S.w.,Park, C.G.,Oh, D.J. Elsevier/North-Holland Biomedical Press 2011 INTERNATIONAL JOURNAL OF CARDIOLOGY Vol.153 No.2
Background: Coronary artery calcification (CAC) is correlated with aortic calcification (AC) and predicts coronary atherosclerosis as well as obstructive coronary artery disease (OCAD). This study aims to investigate whether AC predicts OCAD independent of CAC and its incremental value in predicting OCAD with CAC. Methods: Among the consecutive patients who underwent 64-slice multidetector CT (MDCT), we enrolled 120 stable OCAD (luminal narrowing ≥50%) patients and 120 controls without OCAD, matched for cardiovascular risk factors. CAC, thoracic AC, and OCAD were determined by MDCT. Results: The prevalence of AC and CAC were significantly higher in OCAD patients than in controls (64% vs. 48%, p=0.019; 57% vs. 32%, p<0.001, respectively). There is a significant correlation between AC and CAC scores in the overall study population (r=0.528, p<0.001). In univariate analysis, the odds ratios (ORs) of AC and CAC in predicting OCAD were 1.91 (95% CI, 1.14-3.21) and 2.82 (95% CI, 1.67-4.78), respectively. When an adjustment was made for each other, AC did not maintain a significant association with OCAD, whereas CAC persisted the association (OR, 2.52; 95% CI, 1.42-4.47). Both AC and CAC present as compared to both absent was found to be a more potent predictor for OCAD (OR, 3.37; 95% CI 1.78-6.36, p<0.001) than CAC alone. Conclusions: The presence of AC was associated with stable OCAD independently from cardiovascular risk factors, but the association seemed to be based on the close correlation between AC and CAC. However, AC might have an incremental value with CAC for predicting OCAD.
Park, J.,Shim, J.,Uhm, J.S.,Joung, B.,Lee, M.H.,Pak, H.N. Elsevier/North-Holland Biomedical Press 2013 INTERNATIONAL JOURNAL OF CARDIOLOGY Vol.168 No.3
Background: Electro-anatomical remodeling of the atria has been reported to be associated with sinus node dysfunction in patients with atrial fibrillation (AF). We hypothesized that post-shock sinus node recovery time (PS-SNRT: the time from cardioversion to the earliest sinus node activation) is related to the degree of left atrial (LA) remodeling and the clinical outcome of radiofrequency catheter ablation (RFCA) in patients with longstanding persistent AF (L-PeAF). Methods and results: We included 117 patients with L-PeAF (82.0% males, 55.4+/-10.7years old) who underwent RFCA. PS-SNRTs were measured after internal cardioversion (serial shocks 2, 3, 5, 7, 10, and 15J) before RFCA. All patients underwent the same ablation design, and we compared regional LA volume (3D-CT imaging) and LA voltage (NavX). Results: 1. During the 13.5+/-5.8-month follow-up period, it was noted that the patients with recurrent AF 3months after RFCA (n=31) had longer PS-SNRTs (1622.90+/-1196.92ms vs. 1112.53+/-690.68ms, p=0.005) and greater anterior LA volume (p=0.032) than those who remained in sinus rhythm. 2. The patients with PS-SNRT ≥1100ms showed lower AF-free rates (58.3%) compared to those with PS-SNRT <1100ms (89.5%, p<0.001). However, shock energy, number of cardioversion, and LA volume were not different between two groups. 3. Multivariate Cox regression analysis demonstrated PS-SNRT ≥1100ms was a significant predictor of clinical recurrence of AF (HR 5.426, 95% CI 2.099-14.028, p<0.001). Conclusion: In patients with L-PeAF, prolonged PS-SNRT is an independent predictor of clinical recurrence of AF after RFCA, but not closely associated with electro-anatomical remodeling of LA.