1.The Use of Pulsed Dye Laser for the Treatment of Xanthelasma Palpebrum.
Dong Soo YU ; Chil Hwan OH ; Hae Jun SONG
Annals of Dermatology 2001;13(1):55-58
Xanthelasma palpebrum is the most common type of xanthoma that develops mainly on the inner epicanthus of upper eyelids with symmetrical distribution. The lesion tends to be permanent, progressive and cosmetically disfiguring. The recommended treatment has been surgical excision, local treatment with chemicals, and carbon dioxide laser. All of the mentioned treatment have some disadvantages including scarring, pigmentary change and need for local anesthesia. We describe the treatment of xanthelasma palpebrum with the pulsed dye laser which coagulates the hyperpermeable vessels so that the lipid leakage could be blocked and prevent recurrence and further progression.
Anesthesia, Local
;
Cicatrix
;
Eyelids
;
Lasers, Dye*
;
Lasers, Gas
;
Recurrence
;
Xanthomatosis
2.Norovirus Infections in Asymptomatic Food Handlers in Elementary Schools without Norovirus Outbreaks in Some Regions of Incheon, Korea.
Jun Hwan YU ; Na Yeon KIM ; Eun Jung LEE ; In Sang JEON
Journal of Korean Medical Science 2011;26(6):734-739
Norovirus (NV) has caused large outbreaks of gastroenteritis in schools. Studies of NV epidemiology in schools related to NV outbreaks have been frequently reported. However, reports of that in schools without outbreaks are not found. Presently, NV molecular epidemiology surveillance was carried out in asymptomatic food handlers working at nonoutbreak elementary schools in Incheon, Korea, in March, April and December, 2009. NV prevalence was examined by real-time reverse transcription-PCR (RT-PCR) and the positive products were re-evaluated by conventional RT-PCR for sequencing. Fecal samples (n = 776) were collected from 776 food handlers in 60 schools. NV was detected in 26 of them (3.4%). Of these, 17 (65%) were positive for NV GII and 10 (38%) were positive for NV GI. Of the 26 samples, 19 were positive by conventional RT-PCR. Sequencing of these 19 strains revealed GII/4 (n = 5), GI/6 (n = 3), GI/14 (n = 2), GII/8 (n = 2), GI/2 (n = 2), GI/10 (n = 1), GII/1 (n = 1), GII/3 (n = 1), GII/7 (n = 1), and GII/16 (n = 1). In this survey, the food handler population unrelated to NV outbreaks was found to normally contain asymptomatic carriers of NV. The excretion of NV from asymptomatic food handlers should be an infection source of NV outbreaks.
Adult
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Caliciviridae Infections/*epidemiology/genetics
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Feces/virology
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Female
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Food Handling
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Gastroenteritis/*epidemiology/genetics
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Genotype
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Humans
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Male
;
Middle Aged
;
Norovirus/genetics/*isolation & purification
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Prevalence
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RNA, Viral/analysis
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Republic of Korea
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Reverse Transcriptase Polymerase Chain Reaction
;
Schools
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Sequence Analysis, RNA
3.Primary Hepatic Carcinoid Tumor: A case report.
Jun Hee YEO ; Hee Chul YU ; Yeon Jun JEONG ; Sung Hoo JUNG ; Baik Hwan CHO
Korean Journal of Hepato-Biliary-Pancreatic Surgery 2002;6(1):100-102
A case of primary carcinoid tumor of the liver with striking central fibrous scar in a 61-year-old male is reported. Tumor cells contained electron dense secretory granules with an average diameter 150~200 nm which demonstrated positive immunohistochemical reaction for neuron-specific enolase, synaptophysin and chromogranin. The stellate central scar was observed in various hepatic tumors including focal nodular hyperplasia, fibrolamellar carcinoma, or sclerosing hepatocellular carcinoma, but have not been reported in carcinoid tumor.
Carcinoid Tumor*
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Carcinoma, Hepatocellular
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Cicatrix
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Focal Nodular Hyperplasia
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Humans
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Liver
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Male
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Middle Aged
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Phosphopyruvate Hydratase
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Secretory Vesicles
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Strikes, Employee
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Synaptophysin
4.Intracardiac Thrombosis Involving All Four Cardiac Chambers after Extracardiac Membranous Oxygenation Associated with MTHFR Mutations.
Bong Jun KIM ; Seung Hwan SONG ; Yu Rim SHIN ; Han Ki PARK ; Young Hwan PARK ; Hong Ju SHIN
The Korean Journal of Thoracic and Cardiovascular Surgery 2016;49(3):207-209
A 4-month-old boy diagnosed with acute myocarditis was treated with extracorporeal membrane oxygenation (ECMO). Follow-up echocardiography eight hours after ECMO revealed intracardiac thrombosis involving all four heart chambers. Because of the high risk of systemic embolization due to a pedunculated thrombus of the aortic valve, we performed an emergency thrombectomy. After the operation, the patient had a minor neurologic sequela of left upper arm hypertonia, which had almost disappeared at the last outpatient clinic two months later. He was diagnosed with a major mutation in MTHFR (methylenetetrahydrofolate reductase), which is related to thrombosis.
Ambulatory Care Facilities
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Aortic Valve
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Arm
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Echocardiography
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Emergencies
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Extracorporeal Membrane Oxygenation
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Follow-Up Studies
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Heart
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Humans
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Infant
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Male
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Methylenetetrahydrofolate Reductase (NADPH2)
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Myocarditis
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Oxygen*
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Thrombectomy
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Thrombosis*
5.A Case of Renal Vein Thrombosis in a Patient with Ulcerative Colitis.
Dong Jin YANG ; Young Sook PARK ; Yeon Hwa YU ; Yun Ju JO ; Seong Hwan KIM ; Yoon Young JUNG ; Young Hwan HWANG ; Dae Won JUN
The Korean Journal of Gastroenterology 2009;54(4):248-251
Venous thrombosis and thromboembolism appear to occur more often in patient with inflammatory bowel disease (IBD). The cause of thrombotic complications in IBD is generally considered to be associated with hypercoagulable conditions. Its prevalence rate ranges from 1% to 8% in clinical studies and rises to 39% in autopsy, but the renal vein thrombosis is very rare complication in ulcerative colitis patient. A 24-year-old man presented with intermittent abdominal pain and hematochezia for 6 months and recently developed pitting edema for few weeks. He was diagnosed as severe ulcerative colitis involving whole colon combined with thrombosis in both renal veins by colonoscopy and computed tomography scan of abdomen. We used steroid for the treatment of ulcerative colitis and both intravenous lower molecular weight heparin and warfarin for renal vein thrombosis. His symptoms were improved after treatment and maintained with mesalazine and warfarin. Follow-up abdominal CT scan showed complete resolution of both renal vein thrombosis. Currently he has been followed up for 2 years with oral mesalazine.
Anticoagulants/therapeutic use
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Colitis, Ulcerative/complications/*diagnosis/pathology
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Colonoscopy
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Heparin/therapeutic use
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Humans
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Male
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Protein S/metabolism
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*Renal Veins
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Tomography, X-Ray Computed
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Venous Thrombosis/complications/*diagnosis/radiography
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Warfarin/therapeutic use
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Young Adult
6.Validation of Korean Version of the London Chest Activity of Daily Living Scale in Patients With Chronic Obstructive Pulmonary Disease.
Jun Tak CHOI ; Jeong Hwan SEO ; Myoung Hwan KO ; Sung Hee PARK ; Gi Wook KIM ; Yu Hui WON
Annals of Rehabilitation Medicine 2018;42(2):329-335
OBJECTIVE: To translate the English version of the London Chest Activity of Daily Living scale (LCADL) into a Korean version and to determine the reliability and validity of the Korean version in patients with chronic obstructive pulmonary disease (COPD). METHODS: The English version of LCADL was translated into Korean and back-translated into English. Subsequently, the back-translated version was reviewed and compared with the original, and thus the final K-LCADL was obtained. To evaluate the validation of the K-LCADL, patients simultaneously completed a pulmonary function test, a 6-Minute Walk Test (6MWT), and questionnaires, including the modified Medical Research Council (mMRC) dyspnea scale, the Korean version of the St. George's Respiratory Questionnaire (K-SGRQ), the Korean version of the COPD Assessment Test (K-CAT), and the Korean version of the EuroQoL-5 Dimensions (K-EQ-5D). To assess test-retest reliability, the K-LCADL was again administered to the same patients within 2 weeks from initial assessment. RESULTS: A total of 94 patients participated in the present study. The total K-LCADL score was positively correlated with the K-SGRQ (r=0.802, p < 0.001), the mMRC dyspnea scale (r=0.603, p < 0.001), and the K-CAT score (r=0.714, p < 0.001), and negatively correlated with the K-EQ-5D (r=−0.764, p < 0.001), 6MWT (r=−0.635, p < 0.001), forced expiratory volume in one second 1 (r=−0.416, p=0.002), and forced vital capacity (r=−0.397, p=0.023). Intraclass correlation coefficient of the K-LCADL was 0.951 (p < 0.001). CONCLUSION: The K-LCADL is a reliable and valid questionnaire for evaluating limitation of activities of daily living in patients with COPD.
Activities of Daily Living
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Dyspnea
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Forced Expiratory Volume
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Humans
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Pulmonary Disease, Chronic Obstructive*
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Reproducibility of Results
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Respiratory Function Tests
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Thorax*
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Vital Capacity
7.Tenofovir and Entecavir Have Similar Renal Adverse Events on Hepatocellular Carcinoma Patients Treated with Transarterial Chemoembolization
Young Youn CHO ; Young Hwan CHOI ; Su Jong YU ; Eun Ju CHO ; Jeong Hoon LEE ; Yoon Jun KIM ; Jung Hwan YOON
Journal of Liver Cancer 2019;19(2):128-135
BACKGROUND/AIMS: Tenofovir disoproxil fumarate (TDF) is potentially nephrotoxic in chronic hepatitis B patients. Hepatocellular carcinoma (HCC) patients treated using transarterial chemoembolization (TACE) are at an increased risk of renal injury. The aim of this study was to determine whether TDF is associated with more renal adverse events than entecavir (ETV) in HCC patients treated with TACE. METHODS: In this retrospective single-center study, we selected 53 HCC patients who were treated with TDF from January 2012 to July 2013 and had their first TACE procedure in the same period. These patients were matched by age and sex to patients treated with ETV. RESULTS: There were no significant differences in baseline characteristics, including HCC factors, and nephrotoxic drug use, between the two groups. The median follow-up period was 17.0 and 20.0 months for the TDF and ETV groups, respectively. There was no difference during the follow-up period between the TDF and ETV groups in the increase in creatinine over 0.5 mg/dL (17.0% and 17.0%, P=1.00, respectively) and the decrease in eGFR over 25% (43.4% and 41.5%, P=0.84, respectively). Multivariate analysis revealed that Child-Pugh class over B (hazard ratio [HR], 7.30; 95% confidence interval [CI] 2.79–19.10; P<0.01) was associated with increase in creatinine, and Child-Pugh class over B (HR, 82.74; 95% CI 12.31–555.83; P<0.01) and Barcelona-Clinic Liver Cancer stage over B (HR, 14.93; 95% CI 1.60–139.51; P=0.02) were associated with decrease in eGFR. CONCLUSIONS: TDF has comparable safety to that of ETV for HCC patients undergoing TACE.
Antiviral Agents
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Carcinoma, Hepatocellular
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Creatinine
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Follow-Up Studies
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Hepatitis B, Chronic
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Humans
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Kidney Diseases
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Liver Neoplasms
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Multivariate Analysis
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Retrospective Studies
;
Tenofovir
8.Epidemiology of Foodborne Norovirus Outbreak in Incheon, Korea.
Jun Hwan YU ; Na Yeon KIM ; Yeon Ja KOH ; Hun Jae LEE
Journal of Korean Medical Science 2010;25(8):1128-1133
On June 14, 2008, an outbreak of gastroenteritis occurred among elementary school students in Incheon. We conducted an investigation to identify the source and described the extent of the outbreak. We performed a retrospective cohort study among students, teachers and food handlers exposed to canteen food in the elementary school. Using self-administered questionnaires we collected information on symptoms, days of canteen food eaten, food items consumed. Stool samples were collected from 131 symptomatic people and 11 food handlers. The catering kitchen was inspected and food samples were taken. Of the 1,560 people who ate canteen food, 117 were symptomatic cases, and the attack rate was 7.5%. Consumption of cucumber-crown daisy salad (RR=2.71), fresh cabbage mix (RR=2.23), dried radish salad (RR=3.04) and young radish kimchi (RR=2.52) were associated with illness. Sixty-four (45%) of the 142 stool specimens were positive for Norovirus. Norovirus was detected in 2 food handlers. Interviews with kitchen staff indicated the likelihood of contamination from an infected food handler to the dried radish salad during food processing. The excretion of Norovirus from asymptomatic food handlers may be an infection source of Norovirus outbreaks.
Adult
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Caliciviridae Infections/*epidemiology
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Child
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Cohort Studies
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*Disease Outbreaks
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Female
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Food Contamination
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Foodborne Diseases/*epidemiology
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Gastroenteritis/*epidemiology
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Humans
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Male
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Norovirus/*classification/genetics
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Phylogeny
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Questionnaires
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Republic of Korea/epidemiology
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Retrospective Studies
9.Epidemiology of Campylobacter jejuni Outbreak in a Middle School in Incheon, Korea.
Jun Hwan YU ; Na Yeon KIM ; Nam Gue CHO ; Jung Hee KIM ; Young Ah KANG ; Ha Gyung LEE
Journal of Korean Medical Science 2010;25(11):1595-1600
On July 6, 2009, an outbreak of gastroenteritis occurred among middle school students in Incheon. An investigation to identify the source and describe the extent of the outbreak was conducted. A retrospective cohort study among students, teachers, and food handlers exposed to canteen food in the middle school was performed. Using self-administered questionnaires, information was collected concerning on symptoms, days that canteen food was consumed, and food items consumed. Stool samples were collected from 66 patients and 11 food handlers. The catering kitchen was inspected and food samples were taken. Of the 791 people who ate canteen food, 92 cases became ill, representing an attack rate of 11.6%. Thirty-one (40.3%) of the 77 stool specimens were positive for Campylobacter jejuni. Interviews with kitchen staff indicated the likelihood that undercooked chicken was provided. This is the first recognized major C. jejuni outbreak associated with contaminated chicken documented in Korea.
Adolescent
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Adult
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Animals
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Campylobacter Infections/*epidemiology
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*Campylobacter jejuni
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Chickens
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Cohort Studies
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*Disease Outbreaks
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Electrophoresis, Gel, Pulsed-Field
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Environmental Exposure
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Female
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Food Contamination
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Humans
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Male
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Middle Aged
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Questionnaires
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Republic of Korea
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Retrospective Studies
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Risk Factors
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Water Microbiology
10.Vascular Clips in the Creation of Arteriovenous Fistula for Hemodialysis.
Hee Chul YU ; Tae Hoon LEE ; Yeon Jun JEONG ; Baik Hwan CHO
Journal of the Korean Society for Vascular Surgery 2000;16(1):104-109
PURPOSE: A vascular clipping system (VCS) has been introduced for clinical use. This study was developed to compare the VCS with prolene for anastomosis of arteriovenous fistula (AVF) in hemodialysis access surgery. METHODS: 127 consecutive patients requring autologous AVF for hemodialysis and divided into two treatment groups (VCS:Prolene) by their anastomosis methods. Anastomoses were constructed with the VCS in 44 patients and with hand-swen prolene suturing in 83 patients. Among them 35 clipped and 71 sutured were able to follow up survery and the patency rates were analysed by log-rank test. RESULTS: In the VCS cases, end to side AV anastomosis was applied and mean diameter of artery and vein was 1.7 mm, and vein was able to extend to 2.9 mm averagely. The average size of anastomosis length was 7.8 mm. Operation time was 51 (40~120) minutes and the average anastomosis time was 6.5 (3~15) minutes. The average use of clip was 12. In the prolene cases, 28 cases of end to side anastomosis were measured for diameter and the average diameter was 1.7 mm in artery and 1.9 mm in vein, and the average extension of vein was 2.8 mm. Operation time was 76.5 (40~160) minutes and the average anastomosis time was 10~15 minutes. In 55 cases of side to side anastomosis, the average size of anastomosis length was 19.2 mm. There was no other complication after operation except for each one case of received hematoma remove. In the survey cases (VCS : prolene - 35 :71), early failures were 3 :8 cases (8.6 :11.3%), late failures 5 :16 cases (14.3 :22.5%) as the result of 11.3 :12.0 months in average observation. The causes were 3 :5 cases in functional failure, 5 :17 cases in thrombosis and stricture, the other causes were 2 cases in prolene. The cumulative secondary patency rate was 88.3 :65.9% (31 :47 cases). There was higher patency in VCS, but there was no significant difference in the primary and second patency rates in log-rank analysis. CONCLUSION: VCS clip could be able to shorten the clamping time of blood vessel by reducing anastomosis time. Although there was no statistically significant difference between the VCS clips and prolene sutures, the AVF formation with VCS reduced failure rate and improved patency rate.
Arteries
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Arteriovenous Fistula*
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Blood Vessels
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Constriction
;
Constriction, Pathologic
;
Follow-Up Studies
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Hematoma
;
Humans
;
Polypropylenes
;
Renal Dialysis*
;
Sutures
;
Thrombosis
;
Veins