1.A Case of Paraneoplastic Autoimmune Retinopathy in a Young Man with Testicular Cancer
Myungho SEO ; Seongmi KIM ; Ahnul HA ; Jinho JEONG ; Ki Tae NAM
Journal of the Korean Ophthalmological Society 2024;65(11):753-759
		                        		
		                        			 Purpose:
		                        			To report a case of paraneoplastic autoimmune retinopathy in a patient with a history of testicular cancer.Case summary: A 29-year-old man presented with photopsia and floaters. Initial fundus examination revealed no abnormal findings. However, he returned 1 month later with complaints of visual field defects. Fundus examination revealed diffuse white spots in the macula and midperipheral retina and fundus autofluorescence demonstrated hyper-autofluorescence. Optical coherence tomography showed disruption of the ellipsoid zone sparing the fovea. Visual field examination revealed peripheral visual field defects and an electroretinogram showed reduced rod and cone cell responses. Considering his history of testicular cancer, serum paraneoplastic autoantibody panel testing was performed which revealed borderline levels of anti-recoverin antibody leading to a diagnosis of paraneoplastic autoimmune retinopathy. The patient was treated with oral steroids and mycophenolate mofetil for 1 year. However, there was no improvement in the subjective symptoms or ophthalmologic findings. 
		                        		
		                        			Conclusions
		                        			This case of paraneoplastic autoimmune retinopathy in a young man with a history of testicular cancer highlights an early clinical presentation of the disease. It is crucial to recognize that the initial clinical presentation of autoimmune retinopathy can be nonspecific. 
		                        		
		                        		
		                        		
		                        	
2.A Case of Paraneoplastic Autoimmune Retinopathy in a Young Man with Testicular Cancer
Myungho SEO ; Seongmi KIM ; Ahnul HA ; Jinho JEONG ; Ki Tae NAM
Journal of the Korean Ophthalmological Society 2024;65(11):753-759
		                        		
		                        			 Purpose:
		                        			To report a case of paraneoplastic autoimmune retinopathy in a patient with a history of testicular cancer.Case summary: A 29-year-old man presented with photopsia and floaters. Initial fundus examination revealed no abnormal findings. However, he returned 1 month later with complaints of visual field defects. Fundus examination revealed diffuse white spots in the macula and midperipheral retina and fundus autofluorescence demonstrated hyper-autofluorescence. Optical coherence tomography showed disruption of the ellipsoid zone sparing the fovea. Visual field examination revealed peripheral visual field defects and an electroretinogram showed reduced rod and cone cell responses. Considering his history of testicular cancer, serum paraneoplastic autoantibody panel testing was performed which revealed borderline levels of anti-recoverin antibody leading to a diagnosis of paraneoplastic autoimmune retinopathy. The patient was treated with oral steroids and mycophenolate mofetil for 1 year. However, there was no improvement in the subjective symptoms or ophthalmologic findings. 
		                        		
		                        			Conclusions
		                        			This case of paraneoplastic autoimmune retinopathy in a young man with a history of testicular cancer highlights an early clinical presentation of the disease. It is crucial to recognize that the initial clinical presentation of autoimmune retinopathy can be nonspecific. 
		                        		
		                        		
		                        		
		                        	
3.A Case of Paraneoplastic Autoimmune Retinopathy in a Young Man with Testicular Cancer
Myungho SEO ; Seongmi KIM ; Ahnul HA ; Jinho JEONG ; Ki Tae NAM
Journal of the Korean Ophthalmological Society 2024;65(11):753-759
		                        		
		                        			 Purpose:
		                        			To report a case of paraneoplastic autoimmune retinopathy in a patient with a history of testicular cancer.Case summary: A 29-year-old man presented with photopsia and floaters. Initial fundus examination revealed no abnormal findings. However, he returned 1 month later with complaints of visual field defects. Fundus examination revealed diffuse white spots in the macula and midperipheral retina and fundus autofluorescence demonstrated hyper-autofluorescence. Optical coherence tomography showed disruption of the ellipsoid zone sparing the fovea. Visual field examination revealed peripheral visual field defects and an electroretinogram showed reduced rod and cone cell responses. Considering his history of testicular cancer, serum paraneoplastic autoantibody panel testing was performed which revealed borderline levels of anti-recoverin antibody leading to a diagnosis of paraneoplastic autoimmune retinopathy. The patient was treated with oral steroids and mycophenolate mofetil for 1 year. However, there was no improvement in the subjective symptoms or ophthalmologic findings. 
		                        		
		                        			Conclusions
		                        			This case of paraneoplastic autoimmune retinopathy in a young man with a history of testicular cancer highlights an early clinical presentation of the disease. It is crucial to recognize that the initial clinical presentation of autoimmune retinopathy can be nonspecific. 
		                        		
		                        		
		                        		
		                        	
4.Comparison of Methods Used to Prevent Fogging of a Non-contact Wide-field Viewing System during Vitrectomy
Myungho SEO ; Ahnul HA ; Hye Jin LEE ; Jinho JEONG ; Ki Tae NAM
Journal of the Korean Ophthalmological Society 2023;64(10):899-903
		                        		
		                        			 Purpose:
		                        			To compare the effectiveness of warm saline and anti-fog solution for preventing fogging of a non-contact wide-field viewing system during vitrectomy. 
		                        		
		                        			Methods:
		                        			Five liters of water at 36°C were placed in a transparent container. The fogging areas of wide-field lenses were microscopically measured. We created three groups: lenses soaked in normal saline at 25°C for 1 minute (control), lenses soaked in normal saline at 50°C for 1 minute (warm saline), and lenses that were wiped with a sponge soaked in anti-fog solution (ULTRASTOP pro med. Solution, Sigmapharm, Vienna, Austria) after prior soaking in normal saline at 25°C for 1 minute (anti-fog). Images of fogged areas were acquired at 10 seconds and 1, 3, and 5 minutes. Extent of fogged areas and central lens invasion were determined. All experiments were repeated 10 times. 
		                        		
		                        			Results:
		                        			In the control group, the entire areas were always completely fogged. The average fog coverage values were 4.34 ± 1.28, 6.30 ± 1.38, 56.00 ± 25.01, and 93.81 ± 5.88% at 10 seconds and 1, 3, and 5 minutes in the warm saline group and 4.74 ± 0.57, 7.35 ± 0.96, 10.13 ± 1.09, and 11.74 ± 1.74% in the anti-fog group, respectively. There were significant differences at 3 and 5 minutes (p = 0.029, p = 0.012). Fogging of the central lens was detected in 8 tests after 3 minutes and all 10 tests after 5 minutes in the warm saline group, but no fogging was detected in the anti-fog group. 
		                        		
		                        			Conclusions
		                        			Application of an anti-fog solution to a wide-field viewing lens prevents lens fogging during vitrectomy. 
		                        		
		                        		
		                        		
		                        	
5.Clopidogrel versus Aspirin after Dual Antiplatelet Therapy in Acute Myocardial Infarction Patients Undergoing Drug-Eluting Stenting
Doo Sun SIM ; Myung Ho JEONG ; Hyo Soo KIM ; Hyeon Cheol GWON ; Ki Bae SEUNG ; Seung Woon RHA ; Shung Chull CHAE ; Chong Jin KIM ; Kwang Soo CHA ; Jong Seon PARK ; Jung Han YOON ; Jei Keon CHAE ; Seung Jae JOO ; Dong Ju CHOI ; Seung Ho HUR ; In Whan SEONG ; Myeong Chan CHO ; Doo Il KIM ; Seok Kyu OH ; Tae Hoon AHN ; Jin Yong HWANG ;
Korean Circulation Journal 2020;50(2):120-129
		                        		
		                        			
		                        			BACKGROUND AND OBJECTIVES: There is a paucity of data regarding the benefit of clopidogrel monotherapy after dual antiplatelet therapy (DAPT) in patients treated with drug-eluting stents (DES). This study compared outcome between clopidogrel versus aspirin as monotherapy after DES for acute myocardial infarction (MI).METHODS: From Korea Acute Myocardial Infarction Registry-National Institute of Health database, 1,819 patients treated with DES who were switched to monotherapy with clopidogrel (n=534) or aspirin (n=1,285) after uneventful 12-month DAPT were analyzed. The primary endpoint was net adverse clinical events (NACE), defined as a composite of death from any cause, MI, repeat percutaneous coronary intervention (PCI), stent thrombosis, ischemic stroke, or major bleeding during the period from 12 to 24 months.RESULTS: After adjustment using inverse probability of treatment weighting, patients who received clopidogrel, compared with those treated with aspirin, had a similar incidence of NACE (0.7% and 0.7%; hazard ratio, 1.06; 95% confidence interval, 0.31–3.60; p=0.923). The 2 groups had similar rates of death from any cause (0.1% in each group, p=0.789), MI (0.3% and 0.1%, respectively; p=0.226), repeat PCI (0.1% and 0.3%, respectively; p=0.548), stent thrombosis (0.1% and 0%, respectively; p=0.121), major bleeding (0.2% in each group, p=0.974), and major adverse cardiovascular and cerebrovascular events (0.5% in each group, p=0.924).CONCLUSIONS: Monotherapy with clopidogrel, compared to aspirin, after DAPT showed similar clinical outcomes in patients with acute MI treated with DES.
		                        		
		                        		
		                        		
		                        			Aspirin
		                        			;
		                        		
		                        			Drug-Eluting Stents
		                        			;
		                        		
		                        			Hemorrhage
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Incidence
		                        			;
		                        		
		                        			Korea
		                        			;
		                        		
		                        			Myocardial Infarction
		                        			;
		                        		
		                        			Percutaneous Coronary Intervention
		                        			;
		                        		
		                        			Platelet Aggregation Inhibitors
		                        			;
		                        		
		                        			Stents
		                        			;
		                        		
		                        			Stroke
		                        			;
		                        		
		                        			Thrombosis
		                        			
		                        		
		                        	
6.Clopidogrel versus Aspirin after Dual Antiplatelet Therapy in Acute Myocardial Infarction Patients Undergoing Drug-Eluting Stenting
Doo Sun SIM ; Myung Ho JEONG ; Hyo Soo KIM ; Hyeon Cheol GWON ; Ki Bae SEUNG ; Seung Woon RHA ; Shung Chull CHAE ; Chong Jin KIM ; Kwang Soo CHA ; Jong Seon PARK ; Jung Han YOON ; Jei Keon CHAE ; Seung Jae JOO ; Dong Ju CHOI ; Seung Ho HUR ; In Whan SEONG ; Myeong Chan CHO ; Doo Il KIM ; Seok Kyu OH ; Tae Hoon AHN ; Jin Yong HWANG ;
Korean Circulation Journal 2020;50(2):120-129
		                        		
		                        			 BACKGROUND AND OBJECTIVES:
		                        			There is a paucity of data regarding the benefit of clopidogrel monotherapy after dual antiplatelet therapy (DAPT) in patients treated with drug-eluting stents (DES). This study compared outcome between clopidogrel versus aspirin as monotherapy after DES for acute myocardial infarction (MI).
		                        		
		                        			METHODS:
		                        			From Korea Acute Myocardial Infarction Registry-National Institute of Health database, 1,819 patients treated with DES who were switched to monotherapy with clopidogrel (n=534) or aspirin (n=1,285) after uneventful 12-month DAPT were analyzed. The primary endpoint was net adverse clinical events (NACE), defined as a composite of death from any cause, MI, repeat percutaneous coronary intervention (PCI), stent thrombosis, ischemic stroke, or major bleeding during the period from 12 to 24 months.
		                        		
		                        			RESULTS:
		                        			After adjustment using inverse probability of treatment weighting, patients who received clopidogrel, compared with those treated with aspirin, had a similar incidence of NACE (0.7% and 0.7%; hazard ratio, 1.06; 95% confidence interval, 0.31–3.60; p=0.923). The 2 groups had similar rates of death from any cause (0.1% in each group, p=0.789), MI (0.3% and 0.1%, respectively; p=0.226), repeat PCI (0.1% and 0.3%, respectively; p=0.548), stent thrombosis (0.1% and 0%, respectively; p=0.121), major bleeding (0.2% in each group, p=0.974), and major adverse cardiovascular and cerebrovascular events (0.5% in each group, p=0.924).
		                        		
		                        			CONCLUSIONS
		                        			Monotherapy with clopidogrel, compared to aspirin, after DAPT showed similar clinical outcomes in patients with acute MI treated with DES. 
		                        		
		                        		
		                        		
		                        	
7.Effect of Low-Dose Nebivolol in Patients with Acute Myocardial Infarction: A Multi-Center Observational Study
Doo Sun SIM ; Dae Young HYUN ; Myung Ho JEONG ; Hyo Soo KIM ; Kiyuk CHANG ; Dong Ju CHOI ; Kyoo Rok HAN ; Tae Hoon AHN ; Jang Hwan BAE ; Si Wan CHOI ; Jong Seon PARK ; Seung Ho HUR ; Jei Keon CHAE ; Seok Kyu OH ; Kwang Soo CHA ; Jin Yong HWANG
Chonnam Medical Journal 2020;56(1):55-61
		                        		
		                        			
		                        			 The optimal dose of beta blockers after acute myocardial infarction (MI) remains uncertain. We evaluated the effectiveness of low-dose nebivolol, a beta1 blocker and a vasodilator, in patients with acute MI. A total of 625 patients with acute MI from 14 teaching hospitals in Korea were divided into 2 groups according to the dose of nebivolol (nebistol®, Elyson Pharmaceutical Co., Ltd., Seoul, Korea): low-dose group (1.25 mg daily, n=219) and usual- to high-dose group (≥2.5 mg daily, n=406). The primary endpoints were major adverse cardiac and cerebrovascular events (MACCE, composite of death from any cause, non-fatal MI, stroke, repeat revascularization, rehospitalization for unstable angina or heart failure) at 12 months. After adjustment using inverse probability of treatment weighting, the rates of MACCE were not different between the low-dose and the usual- to high-dose groups (2.8% and 3.1%, respectively; hazard ratio: 0.92, 95% confidence interval: 0.38 to 2.24, p=0.860). The low-dose nebivolol group showed higher rates of MI than the usual- to high-dose group (1.2% and 0%, p=0.008). The 2 groups had similar rates of death from any cause (1.1% and 0.3%, p=0.273), stroke (0.4% and 1.1%, p=0.384), repeat PCI (1.2% and 0.8%, p=0.428), rehospitalization for unstable angina (1.2% and 1.0%, p=0.743) and for heart failure (0.6% and 0.7%, p=0.832). In patients with acute MI, the rates of MACCE for low-dose and usual- to high-dose nebivolol were not significantly different at 12-month follow-up. 
		                        		
		                        		
		                        		
		                        	
8.Impact of Gender Differences in Elderly Patients with Acute Myocardial Infarction
Soo Young SEOL ; Myung Ho JEONG ; Seung Hun LEE ; Seok Joon SOHN ; Jae Yeong CHO ; Min Chul KIM ; Doo Sun SIM ; Young Joon HONG ; Hyung Wook PARK ; Ju Han KIM ; Youngkeun AHN ; Jeong Gwan CHO ; Jong Chun PARK
Korean Journal of Medicine 2019;94(1):96-106
		                        		
		                        			
		                        			BACKGROUND/AIMS: It is well known that gender differences are associated with clinical outcomes in patients with acute myocardial infarction (AMI). However, it is not clear whether gender differences affect the prognosis of elderly patients with AMI. METHODS: We analyzed the incidence of in-hospital complications and mortality in the Korea Acute Myocardial Infarction Registry-National Institutes of Health from November 2011 to June 2015. This study included elderly patients (≥ 75 years) diagnosed with AMI. RESULTS: A total of 2,953 patients were eligible for this study. Among them, 1,529 (51.8%) patients were female, and the mean age of the female group was older than that of the male group (80.7 ± 4.4 vs. 79.6 ± 4.0 years, respectively, p < 0.001). Elderly females utilized emergency medical services less frequently compared with elderly males (11.5 vs. 15.4%, respectively, p < 0.001). Elderly female AMI patients had a similar rate of in-hospital mortality compared with elderly males (7.1 vs. 8.4%, respectively, p = 0.196). The rate of major cardiac adverse events (MACEs) was lower in elderly females than males during a 12-month follow-up (hazard ratio [HR] 1.19, 95% confidence interval [CI] 1.00-1.41, p = 0.045). According to multivariate analysis, the male gender is an independent factor for predicting 1-year MACEs (HR 1.37, 95% CI 1.14-1.65, p < 0.001). CONCLUSIONS: No significant differences in peri-procedural complications or in-hospital mortality were observed between male and female elderly patients with AMI. However, elderly female patients had a more favorable prognosis than male patients during a 1-year clinical follow-up.
		                        		
		                        		
		                        		
		                        			Academies and Institutes
		                        			;
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Emergency Medical Services
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Hospital Mortality
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Incidence
		                        			;
		                        		
		                        			Korea
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Mortality
		                        			;
		                        		
		                        			Multivariate Analysis
		                        			;
		                        		
		                        			Myocardial Infarction
		                        			;
		                        		
		                        			Prognosis
		                        			
		                        		
		                        	
9.Potent P2Y₁₂ Receptor Inhibition in Korean Patients with Acute Myocardial Infarction
Yongcheol KIM ; Thomas W JOHNSON ; Myung Ho JEONG
Korean Circulation Journal 2019;49(12):1199-1200
		                        		
		                        			
		                        			No abstract available.
		                        		
		                        		
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Myocardial Infarction
		                        			
		                        		
		                        	
10.Snuffbox Approach for Coronary Chronic Total Occlusion Intervention Using a 7-French Sheath
Yongcheol KIM ; Dae Yong HYUN ; Kyung Hoon CHO ; Min Chul KIM ; Doo Sun SIM ; Young Joon HONG ; Ju Han KIM ; Youngkeun AHN ; Myung Ho JEONG
Chonnam Medical Journal 2019;55(3):175-176
		                        		
		                        			
		                        			No abstract available.
		                        		
		                        		
		                        		
		                        	
            
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