Goyang, South Korea
Goyang, South Korea

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PubMed | Ajou University, Korea University, Inje University, Gachon University and 5 more.
Type: | Journal: International journal of rheumatic diseases | Year: 2015

To evaluate treatment patterns and clinical factors affecting gout flare in South Korea.We retrospectively examined data from 401 patients seen at nine rheumatology multicenter clinics, under urate lowering therapy (ULT) more than 6months after stopping prophylactic medication. Demographic data, clinical and laboratory features were collected at the initiation of ULT, upon stopping prophylaxis, and 6months after.The mean age was 52.2years and mean disease duration was 25.0months. The male-to-female count was 387:14. The most common ULT starting agent was allopurinol 83.8%. Colchicine (62.3%) was the most commonly prescribed prophylactic agent. During ULT, 134 of the 401 patients (33.4%) experienced at least one gouty attack in the period from stopping prophylaxis to 6months later. The duration of prophylaxis was different between those with serum uric acid levels below 6mg/dL and those over 6mg/dL (P=0.001). Of the 179 patients (44.6%) who attained target serum uric acid (SUA) levels (6mg/dL) at the end of prophylaxis, those taking <6months of prophylaxis suffered more frequent flares than those taking it 6months (42.9% vs. 26.3%, P=0.041). The time interval to the first attack after stopping prophylaxis was shorter in the <6months group than the 6months group (13.5weeks vs. 22.5weeks, P=0.007).Prophylaxis more than 6months from initiation of ULT, and achieving target SUA (<6mg/dL) at the time of stopping prophylaxis is associated with fewer gout flares during ULT.


PubMed | Ajou University, Korea University, Inje University, Gachon University and 6 more.
Type: Journal Article | Journal: Journal of Korean medical science | Year: 2015

The object of this study was to evaluate the seasonality of gout in Korea. We retrospectively examined data from 330 patients seen at nine rheumatology clinics, treated with urate lowering therapy (ULT) more than one year after stopping prophylactic medication. Demographic data, clinical and laboratory features, and seasonality of gout onset and flares were collected. Season was classified in three-month intervals. The mean age was 52.2 yr and mean disease duration was 26.8 months. The male to female count was 318:12. The onset of acute gouty attacks was obtained in 256 patients. Gout developed most commonly in summer season (36.7%) (P<0.001) and in June (15.6%, P=0.002). During ULT, there were 147 (male 97.3%) gout flares. Although there was no statistically significant difference, gout flares were more common in summer (30.6%). Aggravating factors were identified in 57 flares: alcohol (72.0%) was most common. In the patients who attained target serum uric acid (<6 mg/dL) at the end of prophylaxis, gout flares were high in fall (35.8%) and September (17.0%). In Korea, the summer is most common season of gout onset and there is a tendency for gout flares to increase during ULT in summer/fall season.


PubMed | Alvogen Korea Co., Inje University, Daedong Hospital, Korea University and 19 more.
Type: Journal Article | Journal: Clinical therapeutics | Year: 2016

The aim of this study was to evaluate the efficacy and tolerability of rosuvastatin/ezetimibe combination therapy in Korean patients with high cardiovascular risk.This was a 12-week, randomized, double-blind, placebo-controlled, multicenter study. A total of 337 patients were screened. After a 4-week run-in period, 245 of these patients with high or moderately high risk as defined by the National Cholesterol Education Program Adult Treatment Panel III guidelines were randomly assigned. Patients received 1 of 6 regimens for 8 weeks as follows: (1) rosuvastatin 5 mg, (2) rosuvastatin 5 mg/ezetimibe 10 mg, (3) rosuvastatin 10 mg, (4) rosuvastatin 10 mg/ezetimibe 10 mg, (5) rosuvastatin 20 mg, or (6) rosuvastatin 20 mg/ezetimibe 10 mg. The primary outcome variable was percentage change in the level of LDL-C at week 8 of drug treatment. Secondary outcome variables included percentage changes of other lipid variables and achievement rates of LDL-C targets. Tolerability analyses were also performed.The percentage change of LDL-C ranged from -45% to -56% (mean, -51%) in the monotherapy groups and from -58% to -63% (mean, -60%) in the combination therapy groups. The percentage change was greater in the pooled combination therapy group than in the counterpart (P < 0.001 for the pooled groups); this difference was more obvious for regimens with a lower statin dose. The percentage reductions of total cholesterol and triglycerides were greater in the combination groups than in the monotherapy groups. The LDL-C target achievement rates were 64% to 87% (mean, 73%) in the monotherapy groups and 87% to 95% (mean, 91%) in the combination groups (P = 0.01 for the pooled groups). The rates were significantly greater in patients receiving the combination therapy than in the monotherapy at lower doses of rosuvastatin. The proportions of patients with various adverse events were not significantly different between the groups.Rosuvastatin/ezetimibe combination therapy has better efficacy and target achievement rates than rosuvastatin monotherapy in patients with high cardiovascular risk.


PubMed | Soonchunhyang University, Chonnam National University, Kosin University, Gachon University and 6 more.
Type: Journal Article | Journal: Korean circulation journal | Year: 2015

We assessed the ability of portable echocardiography (with contrasts) to clearly delineate the cardiac structure, and evaluated the impact of its use on the diagnosis and management of critically ill patients in Korea.We prospectively enrolled 123 patients (mean age 6616 years), who underwent portable transthoracic echocardiography (with contrast) for image enhancement at 12 medical centers. The quality of the global left ventricular (LV) images, the number of the regional LV segments visualized, the ability to visualize the LV apex and the right ventricle (RV), and any changes in the diagnostic procedure and treatment strategy were compared before and after the contrast.Of the 123 patients, 52 (42%) were using mechanical ventilators. The amount of poor or uninterpretable images decreased from 48% to 5% (p<0.001), after the contrast. Before the contrast, 15.61.1 of 16 LV segments were seen, which improved to 15.90.6 segments (p=0.001) after the contrast. The ability to visualize the LV apex increased from 47% to 94% (p<0.001), while the inability to clearly visualize the RV decreased from 46% to 19% (p<0.001). Changes in the diagnostic procedure (for example, not requiring other types of imaging studies) were observed in 18% of the patients, and the treatment plan (medication) was altered in 26% of patients after the contrast echocardiography.The use of a contrast agent during the portable echocardiography, in intensive care settings, can improve the image quality and impact the diagnostic procedures and treatment for Korean patients.


PubMed | Korea University, Chonnam National University, Catholic University of Korea, Seoul National University and 11 more.
Type: Journal Article | Journal: Kidney research and clinical practice | Year: 2016

In many countries, nephrologists follow clinical practice guidelines for mineral bone disorders to control secondary hyperparathyroidism (SHPT) associated with abnormal serum calcium (Ca) and phosphorus (P) levels in patients undergoing maintenance hemodialysis (MHD). The Kidney Disease Outcomes Quality Initiative (KDOQI) Guidelines have long been used in Korea, and this study was undertaken to investigate the current status of serum Ca and P control in MHD patients.Data were collected from a total of 1,018 patients undergoing MHD without intercurrent illness, in 17 hemodialysis centers throughout the country. Serum levels of Ca, P, and intact parathyroid hormone (iPTH) were measured over 1 year, and the average values were retrospectively analyzed.Serum levels of Ca, P, and the CaP product were 9.10.7mg/dL, 5.31.4mg/dL, and 48.013.6mg(2)/dL(2), respectively. However, the percentages of patients with Ca, P, and Ca P product levels within the KDOQI guideline ranges were 58.7%, 51.0%, and 70.7%, respectively. Of the 1,018 patients, 270 (26.5%) had iPTH >300pg/mL (uncontrolled SHPT), whereas 435 patients (42.7%) showed iPTH <150pg/mL. Patients with uncontrolled SHPT had significantly higher values of serum Ca, P, and CaP product than those with iPTH 300pg/mL.Despite the current clinical practice guidelines, SHPT seems to be inadequately controlled in many MHD patients. Uncontrolled SHPT was associated with higher levels of serum Ca, P, and Ca P product, suggestive of the importance of SHPT management.


PubMed | Yonsei University, Cardiovascular Product Evaluation Center, NHIS Ilsan Hospital and Charité - Medical University of Berlin
Type: | Journal: International journal of cardiology | Year: 2016

LAA occlusion has a similar stroke prevention efficacy compared to anticoagulation treatment for non-valvular atrial fibrillation.The objective of this study was to assess the feasibility and safety of a modified Occlutech left atrial appendage (LAA) closure device in a canine model.The device was implanted in 10 dogs (331kg) using fluoroscopy and transesophageal echocardiography (TEE) guidance. The modified Occlutech LAA occlusion device was compared with the current version, the Watchman device, and the Amplazter cardiac plug (ACP). LAA occlusion and anchoring to the LAA were evaluated. All dogs were assessed using angiography, TEE, and a gross anatomy examination.The 10 LAA occlusion devices were to be implanted into 10 dogs (5 modified Occlutech devices, 3 current version of Occlutech devices, 1 Watchman, and 1 ACP). LAA implantation was not performed in one dog due to transeptal puncture failure. The three current version of Occlutech devices were embolized immediately after implantation, so three modified devices of the same size were implanted securely without embolization. The mean implant size was 20.12.0mm. The devices chosen were a mean of 23.310.6% larger than the measured landing zone diameters. Post-implant angiography and TEE revealed well-positioned devices without pericardial effusion or impingement on surrounding structures.The results of this acute animal study suggested that a modified Occlutech LAA occlusion device was feasible and had greater anchoring performance in canines. Additional large clinical studies are needed to evaluate safety and efficacy.


PubMed | Yonsei University, Dankook University, NHIS Ilsan Hospital and Seoul National University
Type: | Journal: International journal of rheumatic diseases | Year: 2016

We investigated the association between autoantibodies against non-myeloperoxidase (MPO) neutrophil granule antigens and activity of Behets disease (BD).We consecutively enrolled 51 BD patients. We assessed clinical data and BD activity using patients index scores from the Behets Disease Current Activity Form and we performed tests for antibodies against proteinase 3 (PR3), MPO, bactericidal permeability increasing protein (BPI), cathepsin G, elastase, lactoferrin and lysozyme.The median patient index score was 2.0, and 56.9% of patients had active BD. In multivariate analysis of variables with significant correlations, only anti-lysozyme showed a significant correlation with BD activity (P = 0.002). In multivariate logistic regression analyses of variables, when patients were classified into groups according to the optimal cutoff levels of erythrocyte sedimentation rate (ESR), C-reactive protein (CRP) and anti-lysozyme (ESR > 42.5 mm/h, CRP > 1.35 mg/L and anti-lysozyme > 2.95 IU/mL), the variable with independent predictive value was anti-lysozyme (odds ratio 8.384, P = 0.015).Anti-lysozyme was significantly correlated with disease activity score and it was the only independent value to predict active disease in patients with BD. Furthermore, patients having anti-lysozyme levels 2.95 IU/mL had a significantly higher risk of having active BD than those who did not.


PubMed | Yonsei University, NHIS Ilsan Hospital and Korea University
Type: Journal Article | Journal: PloS one | Year: 2016

Although intensive statin therapy is recommended for high risk patients, evidence of its benefit in patients with stable coronary artery disease (CAD) and very low low-density lipoprotein-cholesterol (LDL-C) has been very rare. In this study, we investigated whether higher statin intensity reduces cardiovascular risks in this population.In this retrospective study, a total of 5234 patients with stable CAD were screened at three tertiary hospitals in Korea; 449 patients (mean age: 65 years, male: 69%) with LDL-C <80 mg/dL were finally analyzed. The statin intensities were classified according to the 2013 American College of Cardiology/American Heart Association guidelines. Patients who received statins equivalent to or weaker than atorvastatin 10 mg (group 1) were compared with those who took statins equivalent to or stronger than atorvastatin 20 mg (group 2). The impact of statin intensity on major adverse cardiac events (MACE) was evaluated during follow-up.Group 1 and group 2 consisted of 181 patients (40.3%) and 268 patients (59.7%), respectively. The mean LDL-C level decreased to 52 and 57 mg/dL in group 1 and group 2, respectively, during follow-up. In a median follow-up of 4.5 years, patients of group 2 had a lower incidence of MACE (30 [16.6%] vs. 12 [4.5%], p <0.001), which were mostly related to a lower incidence of coronary revascularization. Cox proportional hazard analyses identified the statin intensity of group 2 (adjusted hazard ratio: 0.25, confidence interval: 0.11-0.55, p <0.001) and the baseline high-density lipoprotein-cholesterol level as independent determinants of MACE.This study provides evidence that higher intensity statins are beneficial for cardiovascular outcomes in patients with stable CAD and very low LDL-C. Statins equivalent to or stronger than atorvastatin 20 mg are more effective than lower intensity statins.


Kang D.-Y.,NHIS Ilsan Hospital | Lee S.,Yonsei University
Thoracic and Cardiovascular Surgeon | Year: 2014

Background The aim of this study was to investigate the association between the presence of lymphatic vessel invasion (LVI) in primary tumors and lymph node (LN) metastasis in clinical stage I non-small cell lung cancer (NSCLC) patients. Materials and Methods A total of 76 patients who underwent complete resection for clinical stage I adenocarcinoma and squamous cell carcinoma were retrospectively examined. Results Tumors consisted of 51 cases of adenocarcinoma and 25 cases of squamous cell carcinoma as determined by histology. LN metastasis was detected in 24.4% (19/76) of patients. Factors associated with LN metastasis on univariate analysis included LVI (<0.001) and increased tumor dimensions (<0.05). Binary logistic regression analysis showed that the presence of LVI (<0.001) was the only predictor of LN metastasis. Conclusion LVI is significantly associated with LN metastasis in patients with clinical stage I NSCLC. These findings may be helpful in determining the most appropriate operative strategy for patients if preoperative detection of LVI becomes feasible.


PubMed | NHIS Ilsan Hospital
Type: Journal Article | Journal: Yonsei medical journal | Year: 2016

To evaluate the technical feasibility and safety of vascular plug assisted retrograde transvenous obliteration (PARTO) for bleeding gastric varix performed in the emergent clinical setting and describe the mid-term clinical results.From April 2012 to January 2015, emergent PARTO was tried in total 9 patients presented with active gastric varix bleeding. After initial insufficient or failure of endoscopic approach, they underwent PARTO in the emergent clinical setting. Gelatin sponge embolization of both gastrorenal (GR) shunt and gastric varix was performed after retrograde transvenous placement of a vascular plug in GR shunt. Coil assisted RTO (CARTO) was performed in one patient who had challenging GR shunt anatomy for vascular plug placement. Additional embolic materials, such as microcoils and NBCA glue-lipiodol mixture, were required in three patients to enhance complete occlusion of GR shunt or obliteration of competitive collateral vessels. Clinical success was defined as no variceal rebleeding and disappearance of gastric varix.All technical and clinical success-i.e., complete GR shunt occlusion and offending gastric varix embolization with immediate bleeding control-was achieved in all 9 patients. There was no procedure-related complication. All cases showed successful clinical outcome during mean follow up of 17 months (12-32 months), evidenced by imaging studies, endoscopy and clinical data. In 4 patients, mild worsening of esophageal varices or transient ascites was noted as portal hypertensive related change.Emergent PARTO is technically feasible and safe, with acceptable mid-term clinical results, in treating active gastric varix bleeding.

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