1.Retrieval of a Partially Degloved Stent Strut During Percutaneous Coronary Intervention
Woohyeun KIM ; Yong Hyun KIM ; Sang Yup LIM ; Seong Hwan KIM ; Jeong Chun AHN ; Woo Hyuk SONG
Chonnam Medical Journal 2012;48(2):130-132
Although stent entrapment is a rare event during percutaneous coronary intervention, stent entrapment can cause stent breakage or loss, which results in fatal complications such as stent embolism or acute myocardial infarction. We report one case of stent entrapment that was successfully treated by a snare via a contralateral transfemoral approach.
Angioplasty
;
Embolism
;
Myocardial Infarction
;
Percutaneous Coronary Intervention
;
SNARE Proteins
;
Stents
2.Two Cases of High Output Heart Failure Caused by Hereditary Hemorrhagic Telangiectasia.
Donghyuk CHO ; Sua KIM ; Mina KIM ; Young Ho SEO ; Woohyeun KIM ; Seong Hee KANG ; Sung Mi PARK ; Wanjoo SHIM
Korean Circulation Journal 2012;42(12):861-865
High-output cardiac failure is a rare complication of hereditary hemorrhagic telangiectasia (HHT) usually caused by shunting of blood through atriovenous malformations (AVMs) in the liver. We describe two cases of high output heart failure due to large hepatic AVMs. Clinical suspicion of HHT based on detailed history taking and physical examination is essential for early detection and proper management of heart failure associated with HHT.
Heart
;
Heart Failure
;
Liver
;
Physical Examination
;
Telangiectasia, Hereditary Hemorrhagic
3.Congenital Left Atrial Bands with Atrial Fibrillation.
Won Young JANG ; Woohyeun KIM ; Eun Jin PARK ; Jah Yeon CHOI ; Cheol Ung CHOI ; Hong Euy LIM ; Jin Won KIM ; Eung Ju KIM ; Seung Woon RHA ; Jin Oh NA
Journal of Cardiovascular Ultrasound 2017;25(4):140-141
No abstract available.
Atrial Fibrillation*
4.Unusual Polymorphic Ventricular Tachycardia Originating from the Pulmonary Artery.
Dae In LEE ; Sang Weon PARK ; Hyungdon KOOK ; Woohyeun KIM ; Dong Hyeok KIM ; Sunki LEE ; Suk Kyu OH ; Young Hoon KIM
Korean Circulation Journal 2013;43(2):119-122
We report a case about a 27-year-old healthy young male who developed syncope during exercise, which was subsequently identified to be attributable to non-sustained polymorphic ventricular tachycardia (VT). Occurrence of polymorphic VT was neither related to a prolonged QT interval nor a fixed short coupling interval. Standard examinations including echocardiography, coronary angiography, isoproterenol infusion study, and cardiac MRI showed no structural heart disease. On the electrophysiology study, activation mapping revealed that a discrete potential preceded the premature ventricular complex (PVC) triggered polymorphic VT, which was recorded just above the pulmonary valve. After radiofrequency ablation at this area, PVC and polymorphic VT disappeared and did not recur after a 2 month follow up.
Catheter Ablation
;
Coronary Angiography
;
Echocardiography
;
Electrophysiology
;
Follow-Up Studies
;
Heart Diseases
;
Humans
;
Isoproterenol
;
Male
;
Pulmonary Artery
;
Pulmonary Valve
;
Syncope
;
Tachycardia, Ventricular
;
Ventricular Premature Complexes
5.Unusual Polymorphic Ventricular Tachycardia Originating from the Pulmonary Artery.
Dae In LEE ; Sang Weon PARK ; Hyungdon KOOK ; Woohyeun KIM ; Dong Hyeok KIM ; Sunki LEE ; Suk Kyu OH ; Young Hoon KIM
Korean Circulation Journal 2013;43(2):119-122
We report a case about a 27-year-old healthy young male who developed syncope during exercise, which was subsequently identified to be attributable to non-sustained polymorphic ventricular tachycardia (VT). Occurrence of polymorphic VT was neither related to a prolonged QT interval nor a fixed short coupling interval. Standard examinations including echocardiography, coronary angiography, isoproterenol infusion study, and cardiac MRI showed no structural heart disease. On the electrophysiology study, activation mapping revealed that a discrete potential preceded the premature ventricular complex (PVC) triggered polymorphic VT, which was recorded just above the pulmonary valve. After radiofrequency ablation at this area, PVC and polymorphic VT disappeared and did not recur after a 2 month follow up.
Catheter Ablation
;
Coronary Angiography
;
Echocardiography
;
Electrophysiology
;
Follow-Up Studies
;
Heart Diseases
;
Humans
;
Isoproterenol
;
Male
;
Pulmonary Artery
;
Pulmonary Valve
;
Syncope
;
Tachycardia, Ventricular
;
Ventricular Premature Complexes
6.Spontaneous Partial Regression of Coronary Artery Fistula Following Optimal Medical Therapy in a Patient Who Had Combined Significant Coronary Artery Spasm.
Sunki LEE ; Seung Woon RHA ; Hyungdon KOOK ; Dong Hyeok KIM ; Suk Kyu OH ; Dong Hyuk CHO ; Woohyeun KIM ; Dong Joo OH
Korean Circulation Journal 2013;43(5):351-355
Coronary artery fistulas (CAFs) are one of the most rare cardiac anomalies. Some patients with CAF may suffer from ischemic chest pain that originates from combined significant coronary artery spasm (CAS). Spontaneous regression of CAF has been reported in a few cases, almost all of which were infants. We report an adult patient who presented with ischemic chest pain due to multiple coronary arteries to pulmonary artery fistulas and combined significant CAS induced by intracoronary acetylcholine provocation test. Spontaneous regression of one of the fistulas was observed at 2-year angiography follow-up.
Acetylcholine
;
Adult
;
Angiography
;
Arteriovenous Fistula
;
Chest Pain
;
Coronary Vasospasm
;
Coronary Vessel Anomalies
;
Coronary Vessels
;
Fistula
;
Follow-Up Studies
;
Humans
;
Infant
;
Pulmonary Artery
;
Spasm
7.Three-Dimensional Angiography-Guided Percutaneous Transluminal Angioplasty for Distal Aorta and Bi-Iliac Chronic Total Occlusion.
Dong Hyeok KIM ; Seung Woon RHA ; Hyungdon KOOK ; Woohyeun KIM ; Sun Ki LEE ; Suk Kyu OH ; Cheol Ung CHOI ; Dong Joo OH
Korean Circulation Journal 2013;43(4):261-264
Percutaneous recanalization of chronic total occlusions (CTOs) in peripheral arteries, especially TASC D classification including the distal aorta and both iliac arteries is still technically challenging. The conventional technique using standard guidewires and catheters guided by computed tomography and angiography can achieve a limited initial success, depending on lesion characteristics and operator's experience. A special imaging technique using 3-dimensional rotational angiography and spatio-temporal reconstruction with endoview for a better examination of the proximal stump, exact obstruction location, and distal stump direction in a stumpless lesion can be indispensable for successful intervention. We report a successful revascularization case of stumpless distal aorta and bi-iliac CTO guided by this specialized imaging technique.
Angiography
;
Angioplasty
;
Aorta
;
Aorta, Abdominal
;
Arteries
;
Catheters
;
Iliac Artery
;
Imaging, Three-Dimensional
8.A Case of Successful Bare Metal Stenting for Aortic Coarctation in an Adult.
Hyungdon KOOK ; Seung Woon RHA ; Woohyeun KIM ; Dong Hyeok KIM ; Sunki LEE ; Suk Kyu OH ; Tae Hoon AHN ; Won Heum SHIM
Korean Circulation Journal 2013;43(4):269-272
Aortic coarctation is a correctable hypertensive disease. For safety reasons and due to the invasiveness of surgical techniques, percutaneous interventions have become drastically more popular in recent times. In elderly patients with aortic coarctation who are at risk of an aortic wall aneurysm and rupture, covered stents are preferred but in younger patients, bare metal stenting may be sufficient for long-term safety. Herein we present a 47-year-old typical aortic coarctation patient who was successfully treated with a bare metal stent.
Adult
;
Aged
;
Aneurysm
;
Angioplasty
;
Aortic Coarctation
;
Humans
;
Rupture
;
Stents
9.The Impact of Prediabetes on Two-Year Clinical Outcomes in Patients Undergoing Elective Percutaneous Coronary Intervention.
Woong gil CHOI ; Seung Woon RHA ; Byoung Geol CHOI ; Se Yeon CHOI ; Jae Kyeong BYUN ; Ahmed MASHALY ; Yoonjee PARK ; Won Young JANG ; Woohyeun KIM ; Jah Yeon CHOI ; Eun Jin PARK ; Jin Oh NA ; Cheol Ung CHOI ; Eung Ju KIM ; Chang Gyu PARK ; Hong Seog SEO
Yonsei Medical Journal 2018;59(4):489-494
PURPOSE: Prediabetes is an independent risk factor for cardiovascular disease. However, data on the long term adverse clinical outcomes of prediabetic patients undergoing percutaneous coronary intervention (PCI) with drug-eluting stents (DESs) are scarce. MATERIALS AND METHODS: The study population comprised 674 consecutive non-diabetic patients who underwent elective PCI between April 2007 and November 2010. Prediabetes was defined as hemoglobin A1c (HbA1c) of 5.7% to 6.4%. Two-year cumulative clinical outcomes of prediabetic patients (HbA1c of 5.7% to 6.4%, n=242) were compared with those of a normoglycemic group (< 5.7%, n=432). RESULTS: Baseline clinical and angiographic characteristics were similar between the two groups, except for higher glucose levels (104.8±51.27 mg/dL vs. 131.0±47.22 mg/dL, p < 0.001) on admission in the prediabetes group. There was no significant difference between the two groups in coronary angiographic parameters, except for a higher incidence of diffuse long lesion in the prediabetes group. For prediabetic patients, trends toward higher incidences of binary restenosis (15.6% vs. 9.8 %, p=0.066) and late loss (0.71±0.70 mm vs. 0.59±0.62 mm, p=0.076) were noted. During the 24 months of follow up, the incidence of mortality in prediabetic patients was higher than that in normoglycemic patients (5.5% vs. 1.5%, p=0.007). CONCLUSION: In our study, a higher death rate and a trend toward a higher incidence of restenosis in patients with prediabetes up to 2 years, compared to those in normoglycemic patients, undergoing elective PCI with contemporary DESs.
Cardiovascular Diseases
;
Drug-Eluting Stents
;
Follow-Up Studies
;
Glucose
;
Humans
;
Incidence
;
Mortality
;
Percutaneous Coronary Intervention*
;
Prediabetic State*
;
Risk Factors
10.Routine Angiographic Follow-Up versus Clinical Follow-Up after Percutaneous Coronary Intervention in Acute Myocardial Infarction.
Yong Hoon KIM ; Ae Young HER ; Seung Woon RHA ; Byoung Geol CHOI ; Minsuk SHIM ; Se Yeon CHOI ; Jae Kyeong BYUN ; Hu LI ; Woohyeun KIM ; Jun Hyuk KANG ; Jah Yeon CHOI ; Eun Jin PARK ; Sung Hun PARK ; Sunki LEE ; Jin Oh NA ; Cheol Ung CHOI ; Hong Euy LIM ; Eung Ju KIM ; Chang Gyu PARK ; Hong Seog SEO ; Dong Joo OH
Yonsei Medical Journal 2017;58(4):720-730
PURPOSE: Differences in the utility of routine angiographic follow-up (RAF) and clinical follow-up (CF) after percutaneous coronary intervention (PCI) in acute myocardial infarction (AMI) are not well understood. The present study aimed to compare the 3-year clinical outcomes of RAF and CF in AMI patients who underwent PCI with drug-eluting stents (DES). MATERIALS AND METHODS: A total of 774 consecutive AMI patients who underwent PCI with DES were enrolled. RAF was performed at 6 to 9 months after index PCI (n=425). The remaining patients were medically managed and clinically followed (n=349); symptom-driven events were captured. To adjust for any potential confounders, a propensity score matched analysis was performed using a logistic regression model, and two propensity-matched groups (248 pairs, n=496, C-statistic=0.739) were generated. Cumulative clinical outcomes up to 3 years were compared between RAF and CF groups. RESULTS: During the 3-year follow-up period, the cumulative incidences of revascularization [target lesion revascularization: hazard ratio (HR), 2.40; 95% confidence interval (CI), 1.18–4.85; p=0.015, target vessel revascularization (TVR): HR, 3.33; 95% CI, 1.69–6.58; p=0.001, non-TVR: HR, 5.64; 95% CI, 1.90–16.6; p=0.002] and major adverse cardiac events (MACE; HR, 3.32; 95% CI, 1.92–5.73; p<0.001) were significantly higher in the RAF group than the CF group. However, the 3-year incidences of death and myocardial infarction were not different between the two groups. CONCLUSION: RAF following index PCI with DES in AMI patients was associated with increased incidences of revascularization and MACE. Therefore, CF seems warranted for asymptomatic patients after PCI for AMI.
Coronary Angiography
;
Drug-Eluting Stents
;
Follow-Up Studies*
;
Humans
;
Incidence
;
Logistic Models
;
Myocardial Infarction*
;
Percutaneous Coronary Intervention*
;
Propensity Score