1.Cardiac Manifestations of Coronavirus Disease 2019 (COVID-19): a Multicenter Cohort Study
Minkwan KIM ; Jong-Ho NAM ; Jang-Won SON ; Sun Oh KIM ; Nak-Hoon SON ; Chul-Min AHN ; Chi Young SHIM ; Geu-Ru HONG ; In-Cheol KIM ; Jinwoo CHOI ; Seung-Mo KANG ; Yeoung Ho CHOI ; Hae Kyoung YOON ; Jae-Sun UHM ; In Hyun JUNG
Journal of Korean Medical Science 2020;35(40):e366-
		                        		
		                        			 Background:
		                        			This study aimed to investigate the cardiac manifestations of coronavirus disease 2019 (COVID-19). 
		                        		
		                        			Methods:
		                        			From February to March 2020, we prospectively and retrospectively enrolled consecutive patients diagnosed with COVID-19. Patient's data such as the demographic characteristics, symptoms, vital signs, laboratory and radiologic findings, electrocardiographic, and echocardiographic data, including the global longitudinal strain (GLS) of both ventricles, were obtained. 
		                        		
		                        			Results:
		                        			Forty patients (median age, 58 years; 50% men) were enrolled in the initial analysis. Patients were classified into severe and nonsevere groups based on the current guidelines. The 13 patients in the severe group were significantly older, had a greater prevalence of bilateral pneumonia and leukocytosis, and higher aspartate transaminase levels than patients in the nonsevere group. Patients in the severe group had a slightly lower left ventricular ejection fraction (LVEF) than those in the nonsevere group (median [interquartile range], 61.0% [58.5%, 62.3%] vs. 66.7% [60.6%, 69.8%], P = 0.015). In a subgroup of 34 patients in whom GLS could be analyzed, patients in the severe group had a significantly impaired left ventricular GLS (LVGLS) than those in the nonsevere group (−18.1% [−18.8%, −17.1%] vs. −21.7% [−22.9%, −19.9%], P = 0.001). There were no significant differences in total wall (RVGLS total , −19.3% [−23.9%, −18.4%] vs. −24.3% [−26.0%, −22.6%], P = 0.060) and free wall (RVGLS fw , −22.7% [−27.2%, −18.6%] vs. −28.8% [−30.4%, −24.1%], P = 0.066) right ventricle GLS (RVGLS). 
		                        		
		                        			Conclusion
		                        			Patients with severe COVID-19 had lower LVEF and LVGLS. RVGLS was not different between patients with severe and nonsevere COVID-19. 
		                        		
		                        		
		                        		
		                        	
2.Benefit of Four-Dimensional Computed Tomography Derived Ejection Fraction of the Left Atrial Appendage to Predict Thromboembolic Risk in the Patients with Valvular Heart Disease
In Cheol KIM ; Hyuk Jae CHANG ; In Jeong CHO ; Chi Young SHIM ; Geu Ru HONG ; Ji Hoe HEO ; Hyo Suk NAM ; Young Jin KIM ; Byoung Wook CHOI ; Namsik CHUNG
Korean Circulation Journal 2019;49(2):173-180
		                        		
		                        			 BACKGROUND AND OBJECTIVES:
		                        			Decreased left atrial appendage (LAA) emptying velocity in transesophageal echocardiography (TEE) is related with higher incidence of thrombus and increased risk of stroke. Patients with valve disease are at higher risk of thrombus formation before and after surgery. The aim of this study was to investigate the role of 4-dimensional cardiac computed tomography (4DCT) to predict the risk of thrombus formation.
		                        		
		                        			METHODS:
		                        			Between March 2010 to March 2015, total of 62 patients (mean 60±15 years old, male: 53.2%) who underwent 4DCT and TEE for cardiac valve evaluation before surgery were retrospectively included in the current study. Fractional area change in TEE view and emptying velocity at left atrial appendage in TEE view (VeTEE) were measured. Ejection fraction (EF) of left atrial appendage in computed tomography (EFCT) was calculated by 4DCT with full volume analysis. The best cut-off value of EFCT predicting presence of spontaneous echo contrast (SEC) or thrombus was evaluated, and correlation between the parameters were also estimated.
		                        		
		                        			RESULTS:
		                        			SEC or thrombus was observed in 45.2%. EFCT and VeTEE were significantly correlated (r=0.452, p < 0.001). However, fractional area change measured by TEE showed no correlation with VeTEE (r=0.085, p=0.512). EFCT < 37.5% best predicted SEC or thrombus in the patients with valve disease who underwent 4DCT and TEE (area under the curve, 0.654; p=0.038).
		                        		
		                        			CONCLUSIONS
		                        			In the patients who underwent 4DCT for cardiac valve evaluation before surgery, EFCT by volume analysis might have additional role to evaluate LAA function and estimate the risk of thrombus. 
		                        		
		                        		
		                        		
		                        	
3.Benefit of Four-Dimensional Computed Tomography Derived Ejection Fraction of the Left Atrial Appendage to Predict Thromboembolic Risk in the Patients with Valvular Heart Disease
In Cheol KIM ; Hyuk Jae CHANG ; In Jeong CHO ; Chi Young SHIM ; Geu Ru HONG ; Ji Hoe HEO ; Hyo Suk NAM ; Young Jin KIM ; Byoung Wook CHOI ; Namsik CHUNG
Korean Circulation Journal 2019;49(2):173-180
		                        		
		                        			
		                        			BACKGROUND AND OBJECTIVES: Decreased left atrial appendage (LAA) emptying velocity in transesophageal echocardiography (TEE) is related with higher incidence of thrombus and increased risk of stroke. Patients with valve disease are at higher risk of thrombus formation before and after surgery. The aim of this study was to investigate the role of 4-dimensional cardiac computed tomography (4DCT) to predict the risk of thrombus formation. METHODS: Between March 2010 to March 2015, total of 62 patients (mean 60±15 years old, male: 53.2%) who underwent 4DCT and TEE for cardiac valve evaluation before surgery were retrospectively included in the current study. Fractional area change in TEE view and emptying velocity at left atrial appendage in TEE view (VeTEE) were measured. Ejection fraction (EF) of left atrial appendage in computed tomography (EFCT) was calculated by 4DCT with full volume analysis. The best cut-off value of EFCT predicting presence of spontaneous echo contrast (SEC) or thrombus was evaluated, and correlation between the parameters were also estimated. RESULTS: SEC or thrombus was observed in 45.2%. EFCT and VeTEE were significantly correlated (r=0.452, p < 0.001). However, fractional area change measured by TEE showed no correlation with VeTEE (r=0.085, p=0.512). EFCT < 37.5% best predicted SEC or thrombus in the patients with valve disease who underwent 4DCT and TEE (area under the curve, 0.654; p=0.038). CONCLUSIONS: In the patients who underwent 4DCT for cardiac valve evaluation before surgery, EFCT by volume analysis might have additional role to evaluate LAA function and estimate the risk of thrombus.
		                        		
		                        		
		                        		
		                        			Atrial Appendage
		                        			;
		                        		
		                        			Echocardiography, Transesophageal
		                        			;
		                        		
		                        			Four-Dimensional Computed Tomography
		                        			;
		                        		
		                        			Heart Valve Diseases
		                        			;
		                        		
		                        			Heart Valves
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Incidence
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Stroke
		                        			;
		                        		
		                        			Thrombosis
		                        			
		                        		
		                        	
4.Coarctation of the Aorta Treated with Stenting in a Patient with Turner Syndrome.
Seung Woon PARK ; Han Cheol LEE ; Nam Hee YI ; In Seong PARK ; Chi Hwan PARK ; Jin Seok YU
Korean Journal of Medicine 2015;89(3):331-334
		                        		
		                        			
		                        			Cardiovascular malformations, such as bicuspid aortic valve and coarctation of the aorta, are more prevalent in patients with Turner syndrome than in the general population. Here, we describe the case of a 35-year-old female with Turner syndrome who was admitted to our hospital with a fever caused by infective endocarditis. Aortic coarctation was diagnosed using computed tomography. The patient was treated with antibiotics and a stent was then implanted. Endovascular therapy using stents is a safe and effective treatment option for aortic coarctation in patients with Turner syndrome.
		                        		
		                        		
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Anti-Bacterial Agents
		                        			;
		                        		
		                        			Aortic Coarctation*
		                        			;
		                        		
		                        			Aortic Valve
		                        			;
		                        		
		                        			Bicuspid
		                        			;
		                        		
		                        			Endocarditis
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Fever
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Stents*
		                        			;
		                        		
		                        			Turner Syndrome*
		                        			
		                        		
		                        	
5.Indications for Detection, Completion, and Retention Rates of Small Bowel Capsule Endoscopy Based on the 10-Year Data from the Korean Capsule Endoscopy Registry.
Yun Jeong LIM ; Oh Young LEE ; Yoon Tae JEEN ; Chi Yeon LIM ; Dae Young CHEUNG ; Jae Hee CHEON ; Byong Duk YE ; Hyun Joo SONG ; Jin Su KIM ; Jae Hyuk DO ; Kwang Jae LEE ; Ki Nam SHIM ; Dong Kyung CHANG ; Cheol Hee PARK ; Byung Ik JANG ; Jeong Seop MOON ; Hoon Jai CHUN ; Myung Gyu CHOI ; Jin Oh KIM
Clinical Endoscopy 2015;48(5):399-404
		                        		
		                        			
		                        			BACKGROUND/AIMS: Capsule endoscopy (CE) is widely used. However, CE has limitations including incomplete examination, inadequate bowel preparation, and retention. The aim of this study was to estimate the indications for and detection, completion, and retention rates of small intestine CE based on the 10-year data from the Korean Capsule Endoscopy Registry. METHODS: Twenty-four hospitals participated in this study. Clinical information, such as reasons for CE, method and quality of bowel preparation, and incomplete examination and capsule retention rates, was collected and analyzed. RESULTS: A total of 2,914 CEs were registered. The most common reason for CE was obscure gastrointestinal bleeding (59%). Significant lesions were detected in 66% of cases. Positive CE diagnosis occurred in 63% of cases. The preparation method did not significantly affect the quality of bowel preparation for CE. The overall incomplete rate was 33%, and was high in the elderly and those with poor bowel preparation. Capsule retention was 3% and high in patients with small bowel tumors and Crohn's disease and in children under 10 years of age. CONCLUSIONS: CE is a valuable technique; while the overall detection rate is high, incompletion and retention rates are also relatively high. CE should be carefully considered in the elderly and children less than 10 years of age, as well as in patients with small bowel tumors and Crohn's disease.
		                        		
		                        		
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Capsule Endoscopy*
		                        			;
		                        		
		                        			Child
		                        			;
		                        		
		                        			Crohn Disease
		                        			;
		                        		
		                        			Diagnosis
		                        			;
		                        		
		                        			Hemorrhage
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Intestine, Small
		                        			
		                        		
		                        	
6.Flurbiprofen toxicity in 2 dogs.
Ye Hyun LEE ; Eui Hwa NAM ; Seol Hee PARK ; Chi Youn SONG ; Yong Uk LEE ; Jong Myung LEE ; Jung Hoon PARK ; Cheol Yong HWANG
Korean Journal of Veterinary Research 2013;53(3):177-180
		                        		
		                        			
		                        			Two dogs were presented with melena, vomiting and depression after accidental swallowing of candy form of Strepsils (flurbiprofen), which is one of non-steroidal anti-inflammatory drugs used in human medicine for controlling a sore throat. These dogs had common signs of anemia induced by gastrointestinal ulceration and hemorrhage with azotemia and leukocytosis. The dogs were treated with blood transfusion, fluid therapy, proton-pump inhibitor, antiemetics, mucus protectant and antibiotic. Although most of clinical signs of two dogs were resolved, azotemic problem with evidence of renal injury have remained.
		                        		
		                        		
		                        		
		                        			Anemia
		                        			;
		                        		
		                        			Animals
		                        			;
		                        		
		                        			Antiemetics
		                        			;
		                        		
		                        			Azotemia
		                        			;
		                        		
		                        			Blood Transfusion
		                        			;
		                        		
		                        			Candy
		                        			;
		                        		
		                        			Deglutition
		                        			;
		                        		
		                        			Depression
		                        			;
		                        		
		                        			Dogs*
		                        			;
		                        		
		                        			Fluid Therapy
		                        			;
		                        		
		                        			Flurbiprofen*
		                        			;
		                        		
		                        			Hemorrhage
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Leukocytosis
		                        			;
		                        		
		                        			Lidocaine
		                        			;
		                        		
		                        			Melena
		                        			;
		                        		
		                        			Mucus
		                        			;
		                        		
		                        			Pharyngitis
		                        			;
		                        		
		                        			Ulcer
		                        			;
		                        		
		                        			Vomiting
		                        			;
		                        		
		                        			Wounds and Injuries
		                        			
		                        		
		                        	
7.Correction of Gynecomastia by Subcutaneous Mastectomy through "Zigzag" Wavy-Line Periareolar Incision with Liposuction.
Yong Chan BAE ; Jae Woo LEE ; Su Bong NAM ; Soo Jong CHOI ; Cheol Uk KANG ; Chi Won CHOI
Journal of the Korean Society of Aesthetic Plastic Surgery 2009;15(3):242-245
		                        		
		                        			
		                        			Nowadays, several surgical options are available for correction of gynecomastia. The present authors combined subcutaneous mastectomy with liposuction and analyzed the postoperative results to find out an effective surgical method with few complications and good cosmetic result. From January, 2000 to October, 2008, 22 patients(41 breasts) underwent subcutaneous mastectomy through "Zigzag" wavy-line periareolar incision, and liposuction was done on peripheral region through the same approach site. The results were evaluated in terms of postoperative complications, character of the scar on periareolar region and subjective satisfaction of patients. Three patients(7.3%) experienced complicated with hematoma, however, all of them were healed by simple removal and compressive dressing without leaving any problem. Most of the patients were tolerable with operative scar on periareolar region, however, hypertrophic scar developed in 1 patient(2.4%) and regular follow-up with intralesional triamcinolone injection is now in progress. On the period of over 6 months, all of the patients were satisfied with postoperative contour of their breasts. By subcutaneous mastectomy with peripheral liposuction through "Zigzag" wavy-line periareolar incision for correction of gynecomastia, it was possible to excise sufficient volume of breast tissue with minimum postoperative scar and complications.
		                        		
		                        		
		                        		
		                        	
8.Cytolethal Distending Toxin Production, Genotypes and Atimicrobial Susceptibility of Campylobacter jejuni Isolates from Diarrhea Patients and Chickens.
Shin Moo KIM ; Eun Cheol KIM ; Mi Rae CHOI ; Hyung Ah SO ; Eun Sook SHIM ; Eun Sook KIM ; Seong Chan PARK ; Chi Nam SEONG ; Yunsop CHONG
Journal of Bacteriology and Virology 2008;38(4):207-219
		                        		
		                        			
		                        			Campylobacter jejuni isolates from diarrhea patients and chickens in 2008 in Iksan, Korea were tested for biochemical characteristics, and for possession of genes hipO, mutated gyrA, and cdtB. Among the chickens tested 52% carried C. jejuni. All 28 patient isolates and 48 chickens isolates had typical biochemical characteristics, except for nalidixic acid resistance. All isolates from patients and chickens were resistant to ciprofloxacin, and had mutated gyrA gene indicating good correlation of the two tests. Analysis of pulsed-field gel electrophoresis (PFGE) pattern of SmaI-restricted DNA of 53 isolates showed 14 clusters. Twenty-eight patient isolates and two chicken isolates (57%) showed an identical pattern (cluster 9). Chicken isolates C37 and C48 (cluster 2), C31 and C33 (cluster 3), C29, C34, C35, and C36 (cluster 4), and C43, C44 (cluster 6) had identical patterns. All patient isolates, compared to 87% and 80% of chicken isolates, were susceptible to amikacin and chloramphenicol, respectively. Antibiotics with the lowest MIC90 were imipenem, gentamicin, and erythromycin, whereas, those with the highest were ampicillin and tetracycline. In conclusion, C. jejuni carriage rate of chickens in Iksan, Korea, was high, all 28 isolates from patients and two from chickens were an identical clone, whereas isolates from patients and remaining chickens were different clones with only 62% similarity, all isolates had hipO and cdtB genes, and all isolates were resistant to ciprofloxacin.
		                        		
		                        		
		                        		
		                        			Amikacin
		                        			;
		                        		
		                        			Ampicillin
		                        			;
		                        		
		                        			Anti-Bacterial Agents
		                        			;
		                        		
		                        			Bacterial Toxins
		                        			;
		                        		
		                        			Campylobacter
		                        			;
		                        		
		                        			Campylobacter jejuni
		                        			;
		                        		
		                        			Chickens
		                        			;
		                        		
		                        			Chloramphenicol
		                        			;
		                        		
		                        			Ciprofloxacin
		                        			;
		                        		
		                        			Clone Cells
		                        			;
		                        		
		                        			Diarrhea
		                        			;
		                        		
		                        			DNA
		                        			;
		                        		
		                        			Electrophoresis, Gel, Pulsed-Field
		                        			;
		                        		
		                        			Erythromycin
		                        			;
		                        		
		                        			Genotype
		                        			;
		                        		
		                        			Gentamicins
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Imipenem
		                        			;
		                        		
		                        			Korea
		                        			;
		                        		
		                        			Nalidixic Acid
		                        			;
		                        		
		                        			Tetracycline
		                        			
		                        		
		                        	
9.Recommendation guideline of Korean Society of Gynecologic Oncology and Colposcopy for quadrivalent human papillomavirus vaccine.
Byoung Gie KIM ; Nak Woo LEE ; Seung Cheol KIM ; Young Tae KIM ; Yong Man KIM ; Chan Joo KIM ; Sang Yoon PARK ; Yong Sang SONG ; Jae Kwan LEE ; Won Chul LEE ; Nam Hoon CHO ; Chi Hum CHO ; Soo Young HUR ; Jong Sup PARK ; Kyu Wan LEE
Korean Journal of Gynecologic Oncology 2007;18(4):259-283
		                        		
		                        			
		                        			Genital HPV infection is the most common sexually transmitted infection, but the majority of infections are self-limited. However, persistent infection with high-risk types can cause cervical cancer in women, which is the most common female genital cancer in Korea. In addition, HPV infection is the cause of genital warts and is associated with other anogenital cancers. The HPV vaccine is composed of the HPV L1 protein, the major capsid protein of HPV. Expression of the L1 protein in yeast using recombinant DNA technology produces noninfectious virus-like particles (VLP) that resemble HPV virions. The quadrivalent HPV vaccine is a mixture of four HPV type-specific VLPs prepared from the L1 proteins of HPV 6, 11, 16, and 18 combined with an aluminum adjuvant. Clinical trials indicate that the vaccine has high efficacy in preventing persistent HPV infection, cervical cancer precursor lesions, vaginal and vulvar cancer precursor lesions, and genital warts caused by HPV types 6, 11, 16, or 18 among females who have not already been infected with the respective HPV type. The recommended age for primary vaccination of Korean females is 15-17 years, considering sexual debut and duration of protection of the vaccine. Vaccine can be administered as young as age 9 years. Catch-up vaccination is recommended for females aged 18-26 years who have not been previously vaccinated. Vaccination is not a substitute for routine cervical cancer screening, and vaccinated females should have cervical cancer screening as recommended.
		                        		
		                        		
		                        		
		                        			Aluminum
		                        			;
		                        		
		                        			Capsid Proteins
		                        			;
		                        		
		                        			Colposcopy*
		                        			;
		                        		
		                        			Condylomata Acuminata
		                        			;
		                        		
		                        			DNA, Recombinant
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Human papillomavirus 6
		                        			;
		                        		
		                        			Humans*
		                        			;
		                        		
		                        			Korea
		                        			;
		                        		
		                        			Mass Screening
		                        			;
		                        		
		                        			Uterine Cervical Neoplasms
		                        			;
		                        		
		                        			Vaccination
		                        			;
		                        		
		                        			Virion
		                        			;
		                        		
		                        			Vulvar Neoplasms
		                        			;
		                        		
		                        			Yeasts
		                        			
		                        		
		                        	
10.Comparison of Sugical Outcome between Early and Delayed Repair of Orbital Wall Fracture.
Pil Joong YANG ; Nam Cheol CHI ; Gwang Ju CHOI
Journal of the Korean Ophthalmological Society 2003;44(6):1278-1284
		                        		
		                        			
		                        			PURPOSE: We analyzed the preoperative and postoperative clinical findings of orbital wall fracture patients between the group operated within 2 weeks (early group) and the group operated 3 weeks or later (delayed group). METHODS: Eighty three patients who had been operated from January 1997 to December 2001 were included, 68 patients were early group and 15 patients were delayed group. We analyzed retrospectively the degree of diplopia, limitation of extraocular motility and enophthalmos for more than 6 months following surgery. RESULTS: Orbital wall fracture predominantly occurred in male than in female (p>0.05), and mostly between 21 and 40 years old. The main cause was from violence and traffic accidents. The major coexisting diseases were head trauma and fractures of low extremities, especially in the group of delayed operation. The common locations of fracture were either inferior wall or combined inferior and medial walls. The early group showed less severe preoperative clinical states and better outcomes of postoperative improvement than the delayed group. However, there was no statistically significant difference between two groups in the degree of postoperative limitation of extraocular motility and enophthalmos. CONCLUSIONS: The early group tended to be less severe preoperatively and showed better postoperative outcome than the delayed group. However, the repair of orbital wall fracture was be indicated to improve clinical states even after 3 weeks following injury.
		                        		
		                        		
		                        		
		                        			Accidents, Traffic
		                        			;
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Craniocerebral Trauma
		                        			;
		                        		
		                        			Diplopia
		                        			;
		                        		
		                        			Enophthalmos
		                        			;
		                        		
		                        			Extremities
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Orbit*
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Violence
		                        			
		                        		
		                        	
            
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