1.Incidence and outcome of isolated distal deep vein thrombosis in kidney transplant recipients
Mi-Hyeong KIM ; Kang-Woong JUN ; Jeong-Kye HWANG ; Sun-Cheol PARK ; Sang-Seop YUN ; In-Sung MOON ; Ji-Il KIM
Annals of Surgical Treatment and Research 2020;98(6):324-331
		                        		
		                        			 Purpose:
		                        			Isolated distal deep vein thrombosis (IDDVT) is a localized lesion; nonetheless, the risk of proximal vein propagation makes it difficult to decide on the treatment protocol—that is, whether immediate anticoagulation after diagnosis or surveillance via serial imaging should be employed. This study aimed to investigate the appropriate treatment protocol for IDDVT in kidney transplant recipient (KTR). 
		                        		
		                        			Methods:
		                        			Surveillance for venous thromboembolism (VTE) was performed using duplex ultrasonography (DUS) before transplant surgery and at 1 week, 2 weeks, 1 month, 3 months, 6 months, and 1 year after transplant surgery. Dual mechanical prophylaxis was administered to prevent VTE. 
		                        		
		                        			Results:
		                        			In total, 60 out of 829 patients (7.2%) developed VTE, with 49 cases (81.6%) of IDDVT. Among IDDVT patients, 15 patients were treated using anticoagulation-first strategy, whereas the remaining 34 patients were treated using surveillance-first strategy. No patient in either group exhibited thrombus extension into the proximal vein or recurrence within 1 year from transplant surgery. 
		                        		
		                        			Conclusion
		                        			In Korean KTR, extension of IDDVT into the proximal vein could be prevented safely and effectively by serial DUS surveillance along with the maintenance of mechanical prophylaxis. However, the patients who have high thrombus burden or are difficult to get repeated DUS require the use of anticoagulation in early stages. 
		                        		
		                        		
		                        		
		                        	
2.Single Ventilation during Cardiopulmonary Resuscitation Results in Better Neurological Outcomes in a Porcine Model of Cardiac Arrest.
Yong Won KIM ; Hyung Il KIM ; Sung Oh HWANG ; Yoon Seop KIM ; Gyo Jin AN ; Kyoung Chul CHA
Yonsei Medical Journal 2018;59(10):1232-1239
		                        		
		                        			
		                        			PURPOSE: Recent basic life support (BLS) guidelines recommend a 30:2 compression-to-ventilation ratio (CV2) or chest compression-only cardiopulmonary resuscitation (CC); however, there are inevitable risks of interruption of high-quality cardiopulmonary resuscitation (CPR) in CV2 and hypoxemia in CC. In this study, we compared the short-term outcomes among CC, CV2, and 30:1 CV ratio (CV1). MATERIALS AND METHODS: In total, 42 pigs were randomly assigned to CC, CV1, or CV2 groups. After induction of ventricular fibrillation (VF), we observed pigs for 2 minutes without any intervention. Thereafter, BLS was started according to the assigned method and performed for 8 minutes. Defibrillation was performed after BLS and repeated every 2 minutes, followed by rhythm analysis. Advanced cardiac life support, including continuous chest compression with ventilation every 6 seconds and intravenous injection of 1 mg epinephrine every 4 minutes, was performed until the return of spontaneous circulation (ROSC) or 22 minutes after VF induction. Hemodynamic parameters and arterial blood gas profiles were compared among groups. ROSC, 24-hour survival, and neurologic outcomes were evaluated at 24 hours. RESULTS: The hemodynamic parameters during CPR did not differ among the study groups. Partial pressure of oxygen in arterial blood and arterial oxygen saturation were lowest in the CC group, compared to those in the other groups, during the BLS period (p=0.002 and p < 0.001, respectively). The CV1 groups showed a significantly higher rate of favorable neurologic outcome (swine CPC 1 or 2) than the other groups (p=0.044). CONCLUSION: CPR with CV1 could promote better neurologic outcome than CV2 and CC.
		                        		
		                        		
		                        		
		                        			Advanced Cardiac Life Support
		                        			;
		                        		
		                        			Anoxia
		                        			;
		                        		
		                        			Cardiopulmonary Resuscitation*
		                        			;
		                        		
		                        			Epinephrine
		                        			;
		                        		
		                        			Heart Arrest*
		                        			;
		                        		
		                        			Hemodynamics
		                        			;
		                        		
		                        			Injections, Intravenous
		                        			;
		                        		
		                        			Methods
		                        			;
		                        		
		                        			Oxygen
		                        			;
		                        		
		                        			Partial Pressure
		                        			;
		                        		
		                        			Swine
		                        			;
		                        		
		                        			Thorax
		                        			;
		                        		
		                        			Treatment Outcome
		                        			;
		                        		
		                        			Ventilation*
		                        			;
		                        		
		                        			Ventricular Fibrillation
		                        			
		                        		
		                        	
3.The Clinical Impact of Bedside Contrast Echocardiography in Intensive Care Settings: A Korean Multicenter Study.
Hui Jeong HWANG ; Il Suk SOHN ; Woo Shik KIM ; Geu Ru HONG ; Eui Young CHOI ; Se Joong RIM ; Sang Chol LEE ; Wook Jin CHUNG ; Jung Hyun CHOI ; Hye Sun SEO ; Se Jung YOON ; Kyoung Im CHO ; Hyung Seop KIM ; Hyun Ju YOON
Korean Circulation Journal 2015;45(6):486-491
		                        		
		                        			
		                        			BACKGROUND AND OBJECTIVES: We assessed the ability of portable echocardiography (with contrasts) to clearly delineate the cardiac structure, and evaluated the impact of its use on the diagnosis and management of critically ill patients in Korea. SUBJECTS AND METHODS: We prospectively enrolled 123 patients (mean age 66+/-16 years), who underwent portable transthoracic echocardiography (with contrast) for image enhancement at 12 medical centers. The quality of the global left ventricular (LV) images, the number of the regional LV segments visualized, the ability to visualize the LV apex and the right ventricle (RV), and any changes in the diagnostic procedure and treatment strategy were compared before and after the contrast. RESULTS: Of the 123 patients, 52 (42%) were using mechanical ventilators. The amount of poor or uninterpretable images decreased from 48% to 5% (p<0.001), after the contrast. Before the contrast, 15.6+/-1.1 of 16 LV segments were seen, which improved to 15.9+/-0.6 segments (p=0.001) after the contrast. The ability to visualize the LV apex increased from 47% to 94% (p<0.001), while the inability to clearly visualize the RV decreased from 46% to 19% (p<0.001). Changes in the diagnostic procedure (for example, not requiring other types of imaging studies) were observed in 18% of the patients, and the treatment plan (medication) was altered in 26% of patients after the contrast echocardiography. CONCLUSION: The use of a contrast agent during the portable echocardiography, in intensive care settings, can improve the image quality and impact the diagnostic procedures and treatment for Korean patients.
		                        		
		                        		
		                        		
		                        			Critical Illness
		                        			;
		                        		
		                        			Diagnosis
		                        			;
		                        		
		                        			Echocardiography*
		                        			;
		                        		
		                        			Heart Ventricles
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Image Enhancement
		                        			;
		                        		
		                        			Critical Care*
		                        			;
		                        		
		                        			Korea
		                        			;
		                        		
		                        			Prospective Studies
		                        			;
		                        		
		                        			Ventilators, Mechanical
		                        			
		                        		
		                        	
4.Highly Sensitive and Novel Point-of-Care System, aQcare Chlamydia TRF Kit for Detecting Chlamydia trachomatis by Using Europium (Eu) (III) Chelated Nanoparticles.
Ji Yeon HAM ; Jaean JUNG ; Byung Gap HWANG ; Won Jung KIM ; Young Seop KIM ; Eun Ju KIM ; Mi Yeon CHO ; Mi Sun HWANG ; Dong Il WON ; Jang Soo SUH
Annals of Laboratory Medicine 2015;35(1):50-56
		                        		
		                        			
		                        			BACKGROUND: The bacterium Chlamydia trachomatis is one of the leading causes of sexually transmitted diseases worldwide. Since no simple and effective tool exists to diagnose C. trachomatis infections, we evaluated a novel point-of-care (POC) test, aQcare Chlamydia TRF kit, which uses europium-chelated nanoparticles and a time-resolved fluorescence reader. METHODS: The test performance was evaluated by comparing the results obtained using the novel POC testing kit with those obtained using a nucleic acid amplification test (NAAT), using 114 NAAT-positive and 327 NAAT-negative samples. RESULTS: The cut-off value of the novel test was 20.8 with a detection limit of 0.27 ng/mL. No interference or cross-reactivity was observed. Diagnostic accuracy showed an overall sensitivity of 93.0% (106/114), specificity of 96.3% (315/327), positive predictive value (PPV) of 89.8% (106/118), and negative predictive value (NPV) of 97.5% (315/323). The sensitivity of the novel test was much higher than that of currently available POC tests. Furthermore, the relative ease and short turnaround time (30 min) of this assay enables C. trachomatis-infected individuals to be treated without a diagnostic delay. CONCLUSIONS: This simple and novel test is a potential tool to screen a larger population, especially those in areas with limited resources.
		                        		
		                        		
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Aged, 80 and over
		                        			;
		                        		
		                        			Chlamydia Infections/*diagnosis
		                        			;
		                        		
		                        			Chlamydia trachomatis/*genetics/isolation & purification
		                        			;
		                        		
		                        			DNA, Bacterial/chemistry/metabolism
		                        			;
		                        		
		                        			Europium/*chemistry
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Metal Nanoparticles/*chemistry
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Point-of-Care Systems
		                        			;
		                        		
		                        			Reagent Kits, Diagnostic
		                        			;
		                        		
		                        			Real-Time Polymerase Chain Reaction
		                        			;
		                        		
		                        			Sensitivity and Specificity
		                        			;
		                        		
		                        			Young Adult
		                        			
		                        		
		                        	
5.Human Anaplasmosis in Acute Febrile Patients during Scrub Typhus Season in Korea.
Myung Jo YOU ; Won Il KIM ; Ho Seong CHO ; Gee Wook SHIN ; Jeong Hwan HWANG ; Chang Seop LEE
Infection and Chemotherapy 2015;47(3):181-182
		                        		
		                        			
		                        			No abstract available.
		                        		
		                        		
		                        		
		                        			Anaplasmosis*
		                        			;
		                        		
		                        			Animals
		                        			;
		                        		
		                        			Humans*
		                        			;
		                        		
		                        			Korea*
		                        			;
		                        		
		                        			Scrub Typhus*
		                        			;
		                        		
		                        			Seasons*
		                        			
		                        		
		                        	
6.Giant Anterior Cervical Osteophyte Leading to Dysphagia.
Jin Seop HWANG ; Chung Kee CHOUGH ; Won Il JOO
Korean Journal of Spine 2013;10(3):200-202
		                        		
		                        			
		                        			Large anterior cervical osteophytes can occur in degeneration of the cervical spine or in diffuse idiopathic skeletal hyperostosis(DISH). Large osteophytes can produce otolaryngological symptoms such as dysphagia, dysphonia, and foreign body sensation. We describe a DISH patient with giant anterior cervical osteophyte causing chronic dysphagia and dysphonia. A 56-year-old man presented with increasing dysphagia, dysphonia, neck pain and neck stiffness. Physical examination of the neck showed a non-tender and hard mass on the left side at the level of C4-5. Radiography showed extensive ossification of anterior longitudinal ligament along the left anterolateral aspect of vertebral bodies from C2 to T1. The ossification was espe cially prominent at the level of C4-5 and linear breakage was noted at same level. Esophagogram revealed a filling defect along the pharynx and lateral displacement of the esophagus. Giant anterior cervical osteophyte was removed through the leftsided anterolateral cervical approach to the spine. Anterior cervical interbody fusion at C4-5 was followed by posterior cervical fixation using lateral mass screws from C3 to C6. After surgery, dysphagia and dysphonia improved immediately. One year later, cervical CT showed bone fusion at C4-5 bodies and no recurrence of osteophyte. DISH is a common cause of anterior cervical osteophyte leading to progressive dysphagia. Keeping this clinical entity in the differential diagnosis is important in patients with progressive neck stiffness, dysphagia or dysphonia. And surgical treatment of symptomatic anterior cervical osteophyte due to DISH should be considered with a solid fusion procedure preventing postoperative instability or osteophyte progress.
		                        		
		                        		
		                        		
		                        			Deglutition Disorders*
		                        			;
		                        		
		                        			Diagnosis, Differential
		                        			;
		                        		
		                        			Dysphonia
		                        			;
		                        		
		                        			Esophagus
		                        			;
		                        		
		                        			Foreign Bodies
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Hyperostosis, Diffuse Idiopathic Skeletal
		                        			;
		                        		
		                        			Longitudinal Ligaments
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Neck
		                        			;
		                        		
		                        			Neck Pain
		                        			;
		                        		
		                        			Osteophyte*
		                        			;
		                        		
		                        			Pharynx
		                        			;
		                        		
		                        			Physical Examination
		                        			;
		                        		
		                        			Recurrence
		                        			;
		                        		
		                        			Sensation
		                        			;
		                        		
		                        			Spine
		                        			
		                        		
		                        	
7.Congenital Adrenal Agenesis Presented with Adrenal Insufficiency.
Hong Kyu PARK ; Eun Jung SHIM ; Kwan Seop LEE ; Il Tae HWANG
Annals of Pediatric Endocrinology & Metabolism 2012;17(1):53-56
		                        		
		                        			
		                        			We report a very rare case of congenital adrenal agenesis presented with adrenal insufficiency in a 4-day-old female newborn. She was admitted with darkish skin color and seizure. Her external genitalia was normal. Elevated serum level of adrenocorticotropic hormone and increased plasma renin activity were observed. Plasma cortisol level and aldosterone level were decreased. Pelvic ultrasonography revealed bilateral agenesis of adrenal glands. Six exons of the steroidogenic factor-1 (SF-1, NR5A1) gene and their intronic flanking sequences were normal. Now, she is continuously receiving replacement doses of glucocorticoids and mineralocorticoids under adrenal insufficiency. Her growth and development are completely normal. We propose that when a patient presents with 46, XY disorder of sex development or normal female genitalia with adrenal insufficiency, SF-1 gene mutation study should be included in the differential diagnosis.
		                        		
		                        		
		                        		
		                        			Adrenal Glands
		                        			;
		                        		
		                        			Adrenal Insufficiency
		                        			;
		                        		
		                        			Adrenocorticotropic Hormone
		                        			;
		                        		
		                        			Aldosterone
		                        			;
		                        		
		                        			Diagnosis, Differential
		                        			;
		                        		
		                        			Exons
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Genitalia
		                        			;
		                        		
		                        			Genitalia, Female
		                        			;
		                        		
		                        			Glucocorticoids
		                        			;
		                        		
		                        			Growth and Development
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Hydrocortisone
		                        			;
		                        		
		                        			Infant, Newborn
		                        			;
		                        		
		                        			Introns
		                        			;
		                        		
		                        			Mineralocorticoids
		                        			;
		                        		
		                        			Plasma
		                        			;
		                        		
		                        			Renin
		                        			;
		                        		
		                        			Seizures
		                        			;
		                        		
		                        			Sexual Development
		                        			;
		                        		
		                        			Skin
		                        			
		                        		
		                        	
8.Identification of CYP2C8 gene polymorphisms in Korean patients with epithelial ovarian cancer and their association with effect and toxicity of anticancer drug.
Sung Ook HWANG ; Eun Seop SONG ; Woo Young LEE ; Yong Il JI ; Yong Man KIM ; Young Tak KIM ; Jung Eun MOK
Korean Journal of Obstetrics and Gynecology 2006;49(3):553-565
		                        		
		                        			
		                        			OBJECTIVE: The frequency of CYP2C8 gene polymorphisms in Korean patients with epithelial ovarian cancer was identified and their association with toxicity and effect of the anticancer drug according to haplotypes was analyzed. METHODS: DNA was extracted from 57 epithelial ovarian cancer patients between January 2004 and March 2005. Genetic variations that are three common SNPs (CYP2C8*1D; -411T>C, CYP2C8*1C; -370T>G and CYP2C8*1B; -271C>A) by direct sequence analysis from 57 Korean women with epithelial ovarian cancer were observed. 33 patients who received debulking surgery, were diagnosed over FIGO state III, serous ovarian cancer were enrolled and received paclitaxel based chemotherapy. Among 33 patients 21 chemo-sensitive patients and 12 resistant patients were analyzed. Using these SNPs, We constructed haplotypes and haplotype pairs. CYP2C8 genotypes according to the clinical characteristics were analyzed and evaluated. RESULTS: Genetic analysis revealed the common SNPs' allele frequencies of -411T>C, -370T>G, and -271C>A were 0.3, 0.44, and 0.1. Two common SNPs allele frequency was similar to the data in Korean population substantially, but CYP2C8*1C frequency was more frequent in epithelial ovarian cancer patients and especially in FIGO stage III. Disease free interval in CYP2C8*1C homologous group was longer than others. CONCLUSION: CYP2C8*1C SNPs were detected more frequently in epithelial ovarian cancer patients and especially in FIGO stage III patients. CYP2C8*1C homologous patients had more longer disease free interval than others.
		                        		
		                        		
		                        		
		                        			Cytochrome P-450 Enzyme System
		                        			;
		                        		
		                        			DNA
		                        			;
		                        		
		                        			Drug Therapy
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Gene Frequency
		                        			;
		                        		
		                        			Genetic Variation
		                        			;
		                        		
		                        			Genotype
		                        			;
		                        		
		                        			Haplotypes
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Ovarian Neoplasms*
		                        			;
		                        		
		                        			Paclitaxel
		                        			;
		                        		
		                        			Polymorphism, Single Nucleotide
		                        			;
		                        		
		                        			Sequence Analysis
		                        			
		                        		
		                        	
9.Coil Embolization in Right Superior Thyroid Artery Pseudoaneurysm by Stab Wound.
Dae Hyun HWANG ; Hyung Sim CHOE ; Eun Young KO ; Hyung Jin WON ; Jae Young LEE ; Hyun Beom KIM ; In Jae LEE ; Kwan Seop LEE ; Yul LEE ; Il Seong LEE ; Ik Won KANG ; Young Min WOO ; Chang Sig CHOI ; Dae Won YOON
Journal of the Korean Society for Vascular Surgery 2002;18(1):161-164
		                        		
		                        			
		                        			A case of coil embolization in right superior thyroid artery pseudoaneurysm by stab wound is reported. A fifty-six-year old female, laceration and some bulging in right neck side. Aortic arch angiography, right common carotid angiography was done. Angiography shows 4 2 cm sized right thyroid artery pseudoaneurysm (Fig. 1) and (Fig. 2). We selected right superior thyroid artery by 3F micorofert (CooK, Bloomington, Ind.) and embolized by 2 4 mm (diameter), 2 cm (length) sized micro tornaido coil (CooK, Bloomington, Ind.). Post procedure right common carotid angiography was done. Angiography shows no visualized right thyroid artery pseudoaneurysm (Fig. 3).
		                        		
		                        		
		                        		
		                        			Aneurysm, False*
		                        			;
		                        		
		                        			Angiography
		                        			;
		                        		
		                        			Aorta, Thoracic
		                        			;
		                        		
		                        			Arteries*
		                        			;
		                        		
		                        			Embolization, Therapeutic*
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Lacerations
		                        			;
		                        		
		                        			Neck
		                        			;
		                        		
		                        			Thyroid Gland*
		                        			;
		                        		
		                        			Wounds, Stab*
		                        			
		                        		
		                        	
10.A Case of Boerhaave's Syndrome Involving Nasogastric Tube Penetration into the Pleural Cavity.
Rin CHANG ; Young Woon CHANG ; Byung Ho KIM ; Hyo Jong KIM ; Seok Ho DONG ; Min Su SONG ; Kyeong Jin KIM ; IL Seop HWANG ; Kwan Pyo KOH ; Jeoung Il LEE
Korean Journal of Gastrointestinal Endoscopy 1999;19(3):414-420
		                        		
		                        			
		                        			Boerhaave's syndrome, spontaneous esophageal rupture, is lethal and associated with a 70% survival rate despite emergent surgical management in recent reports. Early diagnosis and management is critical for more favorable outcome. But, it is difficult to diagnose early because of the low incidence and lack of specific symptoms and signs. We experienced 37 year-old male patient with Boerhaave's syndrome who was heavy drinker, and suffered from chronic renal failure. He visited a hospital because of hematemesis and severe back pain. He was transferred to our hospital with a nasogastric tube insertion, which was penetrating the distal esophagus. A radiologic examination revealed that the distal tip was located in the left pleural cavity. It was assumed that the tube had passed through the preexisting perforation site. Operation was not performed emergently due to delay in diagnosis and severe hyperkalemia. The patient was in a septic condition, but had recovered slowly after systemic broad spectrum antibiotic therapy, pleural drainage and intrapleural antibiotic injections. An esophagography revealed no leakage of gastro-grafin on the 14th hospital day, and he later completely recovered from sepsis.
		                        		
		                        		
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Back Pain
		                        			;
		                        		
		                        			Diagnosis
		                        			;
		                        		
		                        			Drainage
		                        			;
		                        		
		                        			Early Diagnosis
		                        			;
		                        		
		                        			Esophageal Perforation
		                        			;
		                        		
		                        			Esophagus
		                        			;
		                        		
		                        			Hematemesis
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Hyperkalemia
		                        			;
		                        		
		                        			Incidence
		                        			;
		                        		
		                        			Kidney Failure, Chronic
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Pleural Cavity*
		                        			;
		                        		
		                        			Rupture
		                        			;
		                        		
		                        			Sepsis
		                        			;
		                        		
		                        			Survival Rate
		                        			
		                        		
		                        	
            
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