1.Thrombotic Occlusion of Stent Graft Limbs due to Severe Angulation of Aortic Neck in Endovascular Repair of Abdominal Aortic Aneurysm.
Minsu KIM ; Myeong Gun KIM ; Woong Chol KANG ; Pyung Chun OH ; Ji Yeon LEE ; Jin Mo KANG ; Wook Jin CHUNG ; Eak Kyun SHIN
Korean Circulation Journal 2016;46(5):727-729
Endovascular aneurysm repair (EVAR) is a safe alternative to open surgical repair for an abdominal aortic aneurysm. However, unfavorable aortic anatomy of the aneurysm has restricted the widespread use of EVAR. Anatomic limitation is most often related to characteristics of the proximal neck anatomy. In this report, we described a patient with a severely angulated proximal neck who underwent EVAR, but required repeat intervention because of thrombotic occlusion of stent graft limbs.
Aneurysm
;
Aortic Aneurysm, Abdominal*
;
Blood Vessel Prosthesis*
;
Extremities*
;
Humans
;
Neck*
;
Stents*
2.The efficacy and safety of drug-eluting balloons for the treatment of in-stent restenosis as compared with drug-eluting stents and with conventional balloon angioplasty.
Pyung Chun OH ; Soon Yong SUH ; Woong Chol KANG ; Kyounghoon LEE ; Seung Hwan HAN ; Taehoon AHN ; Eak Kyun SHIN
The Korean Journal of Internal Medicine 2016;31(3):501-506
BACKGROUND/AIMS: Treatment of coronary in-stent restenosis (ISR) is still associated with a high incidence of recurrence. We aimed to compare the efficacy and safety of drug-eluting balloons (DEB) for the treatment of ISR as compared with conventional balloon angioplasty (BA) and drug-eluting stents (DES). METHODS: Between January 2006 and May 2012 a total of 177 patients (188 lesions, 64.1 ± 11.7 years old) who underwent percutaneous coronary intervention for ISR were retrospectively enrolled. Clinical outcomes were compared between patients treated with DEB (n = 58, 32.8%), conventional BA (n = 65, 36.7%), or DES (n = 54, 30.5%). The primary end point was a major adverse cardiac event (MACE), defined as a composite of cardiac death, myocardial infarction, and target lesion revascularization(TLR). RESULTS: Baseline characteristics were not different except for a history of previous MI, which was more frequent in patients treated by conventional BA or DES than in patients treated by DEB (40.0% vs. 48.1% vs. 17.2%, respectively, p = 0.002). The total incidences of MACEs were 10.7%, 7.4%, and 15.4% in patients treated by DEB, DES, or conventional BA, respectively (p > 0.05). TLR was more frequent in patients treated by conventional BA than in patients treated by DEB or DES, but this was not statistically significant (10.8% vs. 6.9% vs. 3.7%, p > 0.05 between all group pairs, respectively). CONCLUSIONS: This study showed that percutaneous coronary intervention using DEB might be a feasible alternative to conventional BA or DES implantation for treatment of coronary ISR. Further large-scaled, randomized study assessing long-term clinical and angiographic outcomes will be needed.
Angioplasty, Balloon*
;
Coronary Restenosis
;
Death
;
Drug-Eluting Stents*
;
Humans
;
Incidence
;
Myocardial Infarction
;
Percutaneous Coronary Intervention
;
Recurrence
;
Retrospective Studies
3.Efficacy of Inhaled Iloprost in Cor Pulmonale and Severe Pulmonary Hypertension Associated with Tuberculous Destroyed Lung.
Yae Min PARK ; Wook Jin CHUNG ; Sang Pyo LEE ; Deok Young CHOI ; Han Joo BAEK ; Sung Hwan JUNG ; In Suck CHOI ; Eak Kyun SHIN
Journal of Cardiovascular Ultrasound 2014;22(2):95-97
Chronic obstructive pulmonary disease (COPD) is one of the causes of cor pulmonale. Cor pulmonale patients with pulmonary hypertension have a significant lower survival rate than patients without. However, there is no conclusive treatment options in cor pulmonale and pulmonary hypertension associated with COPD until now. We report a patient with cor pulmonale and pulmonary hypertension associated with severe form of COPD and tuberculous destroyed lung who achieved marked clinical, functional and echocardiographic hemodynamic improvements with inhaled iloprost for six months.
Echocardiography
;
Hemodynamics
;
Humans
;
Hypertension, Pulmonary*
;
Iloprost*
;
Lung*
;
Pulmonary Disease, Chronic Obstructive
;
Pulmonary Heart Disease*
;
Survival Rate
4.Functional Class and Targeted Therapy Are Related to the Survival in Patients with Pulmonary Arterial Hypertension.
Yae Min PARK ; Wook Jin CHUNG ; Deok Young CHOI ; Han Joo BAEK ; Sung Hwan JUNG ; In Suck CHOI ; Eak Kyun SHIN
Yonsei Medical Journal 2014;55(6):1526-1532
PURPOSE: Pulmonary arterial hypertension (PAH) is an orphan disease showing poor prognosis. The purpose of study was to evaluate clinical factors influencing outcomes in PAH. MATERIALS AND METHODS: Patients who were diagnosed with PAH at a single center were reviewed retrospectively. Forty patients (34.9+/-14.5 years, 80% of female) were enrolled. RESULTS: Causes were congenital heart disease in 24 (60%), connective tissue disease in 8 (20%) and idiopathic PAH in 6 (15%). Sixteen patients (40%) were WHO functional class III or IV at the time of diagnosis. Twenty seven patients (67.5%) received molecular targeted therapy. During follow-up (53.6+/-45.5 months), 10 patients (25%) died and 1-, 2-, and 8 year survival rates were 91.3%, 78.7%, and 66.8%, respectively. As expected, median survival of patients with functional class I or II were significantly longer than patients with III or IV (p=0.041). Interestingly, patients with molecular targeted therapy showed longer survival than conventional therapy (p=0.021). CONCLUSION: WHO functional class at the time of diagnosis was the strong predictor of survival, and molecular targeted therapy could significantly improve the survival. Therefore, early screening and intensive management would be crucial to improve the prognosis in the patient with PAH.
Adult
;
Antihypertensive Agents/*therapeutic use
;
*Disease Management
;
Familial Primary Pulmonary Hypertension
;
Female
;
Heart Defects, Congenital/complications
;
Humans
;
Hypertension/complications
;
Hypertension, Pulmonary/*classification/*drug therapy/mortality
;
Kaplan-Meier Estimate
;
Male
;
Middle Aged
;
Molecular Targeted Therapy/*methods
;
Prognosis
;
Retrospective Studies
;
Survival Rate
5.A Comparison of Two Brands of Clopidogrel in Patients With Drug-Eluting Stent Implantation.
Yae Min PARK ; Taehoon AHN ; Kyounghoon LEE ; Kwen Chul SHIN ; Eul Sik JUNG ; Dong Su SHIN ; Myeong Gun KIM ; Woong Chol KANG ; Seung Hwan HAN ; In Suck CHOI ; Eak Kyun SHIN
Korean Circulation Journal 2012;42(7):458-463
BACKGROUND AND OBJECTIVES: Although generic clopidogrel is widely used, clinical efficacy and safety between generic and original clopidogrel had not been well evaluated. The aim of this study was to evaluate the clinical outcomes of 2 oral formulations of clopidogrel 75 mg tablets in patients with coronary artery disease (CAD) undergoing drug-eluting stent (DES) implantation. SUBJECTS AND METHODS: Between July 2006 and February 2009, 428 patients that underwent implantation with DES for CAD and completed >1 year of clinical follow-up were enrolled in this study. Patients were divided into the following 2 groups based on treatment formulation, Platless(R) (test formulation, n=211) or Plavix(R) (reference formulation, n=217). The incidence of 1-year major adverse cardiovascular and cerebrovascular event (MACCE) and stent thrombosis (ST) were retrospectively reviewed. RESULTS: The baseline demographic and procedural characteristics were not significantly different between two treatment groups. The incidence of 1-year MACCEs was 8.5% {19/211, 2 deaths, 4 myocardial infarctions (MIs), 2 strokes, and 11 target vessel revascularizations (TVRs)} in Platless(R) group vs. 7.4% (16/217, 4 deaths, 1 MI, 2 strokes, and 9 TVRs) in Plavix(R) group (p=0.66). The incidence of 1-year ST was 0.5% (1 definite and subacute ST) in Platless(R) group vs. 0% in Plavix(R) group (p=0.49). CONCLUSION: In this study, the 2 tablet preparations of clopidogrel showed similar rates of MACCEs, but additional prospective randomized studies with pharmacodynamics and platelet reactivity are needed to conclude whether generic clopidgrel may replace original clopidogrel.
Blood Platelets
;
Coronary Artery Disease
;
Drug-Eluting Stents
;
Follow-Up Studies
;
Glycosaminoglycans
;
Humans
;
Incidence
;
Myocardial Infarction
;
Retrospective Studies
;
Stents
;
Stroke
;
Tablets
;
Thrombosis
;
Ticlopidine
6.The Effects of Statin and Niacin on Plaque Stability, Plaque Regression, Inflammation and Oxidative Stress in Patients With Mild to Moderate Coronary Artery Stenosis.
Kyounghoon LEE ; Tae Hoon AHN ; Woong Chol KANG ; Seung Hwan HAN ; In Suck CHOI ; Eak Kyun SHIN
Korean Circulation Journal 2011;41(11):641-648
BACKGROUND AND OBJECTIVES: The aim of this study was to compare the effects of a combination of niacin and simvastatin to simvastatin alone, on plaque regression and inflammatory makers. SUBJECTS AND METHODS: The study had a prospective, randomized design. Subjects were patients with intermediate coronary artery stenosis. A total of 28 patients received a combination of niacin 1,000 mg plus simvastatin 40 mg (N+S group, n=14); the other group received simvastatin 40 mg alone (S group, n=14). All patients had a baseline and a 9-month follow-up coronary angiogram and an intravascular ultrasound procedure. Parameters such as normalized total atheroma volume (nTAV) and percent atheroma volume (PAV) were analyzed before and after treatment as were inflammatory markers such as high sensitivity C-reactive protein (hs-CRP), Matrix me-talloproteinase-9 (MMP-9) and soluble CD40 ligand (sCD40L). RESULTS: There was no difference in baseline characteristics between the two groups. The nTAV and PAV in the N+S group before and after treatment were not different than those in the S group. But the degree of changes (delta) in nTAV in the N+S group was greater than that in the S group (-21.6+/-10.68 vs. 5.25+/-42.19, respectively, p=0.024). Also, the change in PAV in the NS group was higher than that in the S group (-1.2+/-2.5 vs. -0.6+/-5, respectively, p=0.047. Changes in hs-CRP, MMP-9, and sCD40L in the NS group were significantly greater than those of the S group (-0.71+/-1.25, 73.5+/-64.9, -1,970+/-1,925 vs. -0.32+/-0.96, 62.5+/-30.6, -1,673+/-2,628, respectively). CONCLUSION: The combination of niacin plus simvastatin decreases coronary plaque volume and attenuates the inflammatory response in patients with intermediate coronary artery stenosis.
C-Reactive Protein
;
CD40 Ligand
;
Coronary Stenosis
;
Coronary Vessels
;
Follow-Up Studies
;
Humans
;
Hydroxymethylglutaryl-CoA Reductase Inhibitors
;
Inflammation
;
Niacin
;
Oxidative Stress
;
Plaque, Atherosclerotic
;
Prospective Studies
;
Simvastatin
;
Ultrasonography, Interventional
7.Right Coronary Cusp Prolapse Resembling Subpulmonic Stenosis in an Old Adult Patient with Ventricular Septal Defect.
Myeong Gun KIM ; Wook Jin CHUNG ; Chang Hyu CHOI ; Jeonggeun MOON ; Mi Seung SHIN ; Seung Hwan HAN ; Eak Kyun SHIN
Journal of Cardiovascular Ultrasound 2011;19(4):216-220
Ventricular septal defect (VSD) can be associated with various complications such as aortic regurgitation (AR). AR in VSD come from a deficiency or hypoplasia of the conal septum which leads to abnormal apposition in diastole and prolapse of the poorly supported noncoronary or right coronary cusp through the VSD into the right ventricle resembling subpulmonic stenosis and subsequently results in distortion of the aortic valve and progressive AR. AR often increases in severity with age and it indicates a worse prognosis. Therefore, appropriate timing of surgical repair in progressive AR in VSD might be important. Until now, many earlier experiences about surgical repair of AR complicating VSD were on adolescents or young adults. We reported a case of AR in 48-year-old male patient with right coronary cusp prolapse complicating the subarterial type of VSD which was properly assessed by echocardiography and was successfully treated with surgical repair. Right coronary cusp or noncoronary cusp prolapse should be suspected in AR complicating VSD through proper echocardiographic assessment and the surgical repair on VSD and distorted aortic valve should be considered in the old patient, as well as the young.
Adolescent
;
Adult
;
Aortic Valve
;
Aortic Valve Insufficiency
;
Constriction, Pathologic
;
Diastole
;
Echocardiography
;
Heart Septal Defects, Ventricular
;
Heart Ventricles
;
Humans
;
Male
;
Middle Aged
;
Prognosis
;
Prolapse
;
Young Adult
8.Coronary Artery Perforation Following Implantation of a Drug-Eluting Stent Rescued by Deployment of a Covered Stent in Symptomatic Myocardial Bridging.
Man ZHANG ; Woong Chol KANG ; Chan Il MOON ; Seung Hwan HAN ; Tae Hoon AHN ; Eak Kyun SHIN
Korean Circulation Journal 2010;40(3):148-151
We successfully rescued a patient whose coronary artery perforated following implantation of a drug-eluting stent (DES), by deploying a stent-graft in symptomatic myocardial bridging. Our case demonstrated that coronary perforation could be handled without difficulty when perforated myocardial bridging is confined to the interventricular groove
Angioplasty, Balloon, Coronary
;
Coronary Vessels
;
Drug-Eluting Stents
;
Humans
;
Myocardial Bridging
;
Stents
9.Multidetector Computed Tomography for Evaluation of Ischemic Etiology and a Post-Unroofing Procedure for an Anomalous Origin of the Right Coronary Artery From the Left Sinus of Valsalva.
Man ZHANG ; Woong Chol KANG ; Tae Hoon AHN ; Eak Kyun SHIN
Korean Circulation Journal 2010;40(5):251-252
No abstract available.
Coronary Vessels
;
Multidetector Computed Tomography
;
Sinus of Valsalva
10.Combined Open and Endovascular Repair for Aortic Arch Pathology.
Woong Chol KANG ; Eak Kyun SHIN ; Tae Hoon AHN ; Kyung Hoon LEE ; Chan Il MOON ; Seung Hwan HAN ; Chul Hyun PARK ; Kook Yang PARK ; Jin Mo KANG ; Jung Ho KIM
Korean Circulation Journal 2010;40(8):399-404
BACKGROUND AND OBJECTIVES: We describe our experience with combined open and endovascular repair in patients who have aortic arch pathology. SUBJECTS AND METHODS: This study is a retrospective analysis of 7 patients who underwent combined open and endovascular repair for aortic arch pathology. Medical records and radiographic information were reviewed. RESULTS: A total of 7 consecutive patients (5 men, 71.4%) underwent thoracic stent graft implantation. The mean age was 59.9+/-16.7 years. The indication for endovascular repair was aneurysmal degeneration in 5 patients, and rupture or impending rupture in 2 patients. In all 7 cases, supra-aortic transposition of the great vessels was performed successfully. Stent graft implantation was achieved in all cases. Surgical exposure of the access vessel was necessary in 2 patients. A total of 9 stent grafts were implanted (3 stent grafts in one patient). The Seal thoracic and the Valiant endovascular stent graft were implanted in 6 patients and 1 patient, respectively. There were no post-procedure deaths or neurologic complications. In 2 patients, bleeding and injury of access vessel were noted after the procedure. Postoperative endoleak was noted in 1 patient. One patient died at 10 months after the procedure due to a newly developed ascending aortic dissection. No patients required secondary intervention during the follow-up period. The aortic diameter decreased in 4 patients. In 3 patients, including 1 patient with endoleak, there was no change in aortic diameter. CONCLUSION: Our experience suggests that combined open and endovascular repair for aortic arch pathology is safe and effective, with few complications.
Aneurysm
;
Aorta, Thoracic
;
Aortic Aneurysm
;
Aortic Diseases
;
Endoleak
;
Follow-Up Studies
;
Glycosaminoglycans
;
Hemorrhage
;
Humans
;
Male
;
Medical Records
;
Prostheses and Implants
;
Retrospective Studies
;
Rupture
;
Stents
;
Transplants

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