1.Development of a Baseline Checklist for CTD Risk Assessment.
Donghyun PARK ; Sang Hwan HAN ; Dong Bin SONG
Korean Journal of Occupational and Environmental Medicine 1998;10(2):251-266
Today, CTDs (Cumulative Trauma Disorders) are one of major hazards in the US and European Industries disrupting work schedules, productivity and increasing workers compensation costs. The increase in injuries and their associated costs has led companies to form committees and implement programs to address this problem. Therefore, it is important that quantitative analysis tools help identify and assess industrial tasks that pose risk to workers. However, the process of quantifying risk in upper limb tasks is still in its infancy stage and calls for better measurement techniques are not going unheard. As the first work of quantification, baseline CTD checklist for risk assessment was developed in this study. It was mainly based on previous literature regarding CTDs. The checklist was unique in that its expected user was industrial hygienist who did not have much ergonomic background and in that it was targeted to Korean workers in various types of industries. As the first application of the checklist, some jobs in two industries (VDT, heavy Industry) were evaluated, and compared with the medical data. Eighteen out of thirty items in the checklist was univariately significant (p<0.05) on the results of medical examinations. The correlation between medical data and total risk score from the checklist was 0.62. The feasibility of its use by an industrial hygienist was also checked by comparing with the results by an ergonomist. Their correlation (on the basis of Kendall's tau-b) in terms of total risk score was 0.74. The checklist in this study shows reasonably good performance for the first trial. Further research will have to include continuous refinement and validation for many more industries and many more jobs.
Appointments and Schedules
;
Checklist*
;
Efficiency
;
Risk Assessment*
;
Upper Extremity
;
Workers' Compensation
2.Catheter-guided percutaneous heartworm removal using a nitinol basket in dogs with caval syndrome.
Won Kyoung YOON ; Donghyun HAN ; Changbaig HYUN
Journal of Veterinary Science 2011;12(2):199-201
Carval syndrome is a severe heartworm infection where the worms have migrated to the right atrium and vena cava; this condition is associated with a myriad of clinical signs. Several non-surgical and interventional methods are currently used for mechanical worm removal. However, the success rate and complications related to these methods are heavily dependent on methodology and retrieval devices used. In this study, we developed a catheter-guided heartworm removal method using a retrieval basket that can easily access pulmonary arteries and increase the number of worms removed per procedure. With this technique, we successfully treated four dogs with caval syndrome.
Animals
;
Dirofilaria immitis/*growth & development
;
Dirofilariasis/*parasitology/*surgery
;
Dog Diseases/*parasitology/*surgery
;
Dogs
;
Female
;
Heart Atria/parasitology/surgery
;
Heart Catheterization/instrumentation/methods/*veterinary
;
Male
;
Venae Cavae/parasitology/surgery
3.Coronary Artery Fistula Draining into Lung Parenchyma Causing Localized Pulmonary Edema: Transcatheter Closure with an Amplatzer Vascular Plug 4.
Sanghyok LIM ; Se Whan LEE ; Taehun OH ; Donghyun LEE ; Minwoo PARK ; Sujung HAN
Soonchunhyang Medical Science 2014;20(2):116-119
Coronary artery fistula draining into lung parenchymal vasculature has not been reported. Herein, we describe a case of an 81-year-old woman who presented with a localized pulmonary edema on right upper lobe associated with coronary fistula emptied into vasculature in right upper lobe. She underwent transcatheter closure of the fistula with an Amplatzer Vascular Plug 4, which resulted in complete occlusion and improved localized pulmonary edema.
Aged, 80 and over
;
Coronary Vessels*
;
Female
;
Fistula*
;
Humans
;
Lung*
;
Pulmonary Edema*
4.Serum Levels of Growth Factors in Alcohol-dependent Patients according to Comorbid Depressive Symptoms.
Changwoo HAN ; Donghyun AHN ; Woong HAHM ; Junghyun NAM ; Yongchon PARK ; Seulgi LIM ; Dai Jin KIM
Clinical Psychopharmacology and Neuroscience 2016;14(1):43-48
OBJECTIVE: This study aims to reveal the relationship of depression with growth factors such as brain-derived neurotrophic factor (BDNF), nerve growth factor (NGF), and insulin-like growth factor-1 (IGF-1) in inpatients diagnosed with alcohol dependence, and to identify candidate growth factors as biological markers to indicate the comorbid of alcohol dependence and depression. METHODS: This study examined demographic factors in 45 alcohol-dependent patients. The ADS (Korean version of the Alcohol Dependence Scale) and BDI (Korean version of Beck's Depression Inventory) were used. BDNF, NGF, and IGF-1 were measured through ELISA. RESULTS: The average drinking quantity and the ADS score were significantly more severe in alcohol-dependent patients with depression than in those without depression. Linearly comparing BDNF, NGF, and IGF-1 with BDI values, IGF-1 was the growth factor significantly correlated with BDI scores. BDI scores were significantly correlated with ADS scores. IGF-1 was significantly higher in alcohol-dependent patients with depression. Alcohol-dependent patients with depression had greater alcohol use and more severe ADS scores. BDNF and NGF showed no significant difference between alcohol-dependent patients with and without depression, but IGF-1 was significantly higher in those with than in those without depression. CONCLUSION: IGF-1 was found to be associated with depression in alcohol-dependent patients, suggesting that IGF-1 in alcohol-dependent patients could be an important biomarker to indicate whether alcohol-dependence is accompanied by depression.
Alcoholism
;
Biomarkers
;
Brain-Derived Neurotrophic Factor
;
Demography
;
Depression*
;
Drinking
;
Enzyme-Linked Immunosorbent Assay
;
Humans
;
Inpatients
;
Insulin-Like Growth Factor I
;
Intercellular Signaling Peptides and Proteins*
;
Nerve Growth Factor
5.Retrospective Study of Thoracoscopic Apical Pleurectomy and Mechanical Pleural Abrasion for Spontaneous Pneumothorax.
Donghyun KIM ; Hyun Jo KIM ; Jung Wook HAN ; Wook YOUM
The Korean Journal of Thoracic and Cardiovascular Surgery 2010;43(4):404-408
BACKGROUND: Pleural symphysis is regarded as an important treatment option in reducing recurrence rates after surgical treatment of spontaneous pneumothorax. However, there is much debate over the best method for achieving pleural symphysis. We retrospectively compared apical pleurectomy (AP) with mechanical pleural abrasion (MPA). MATERIAL AND METHOD: Between January 2000 and December 2007, 83 patients underwent video-assisted thoracoscopic surgery (VATS) for spontaneous pneumothorax. In addition to wedge resection of bullae, MPA was performed in 21 patients (group A) and AP in 62 patients (group B). RESULT: There were no significant differences in age, gender and site of pneumothorax between the two groups. Operative time was 97+/-44 minutes in group A and 77+/-18 minutes in group B (p>0.05). The mean amount of pleural drainage through the chest tube on the first postoperative day was 156+/-87 cc in group A and 147+/-87 cc in group B (p>0.05). There was no mortality or significant morbidity in all patients with the exception of reoperation for bleeding in two patients in group B. In the postoperative course, there were no statistical differences between the two groups in the rate of residual air space, air leak and indwelling time of chest tube, and hospital stay. Mean follow up time was 31.7+/-25.3 months, and the recurrence rate of pneumothorax was 9.5% (2/21) in group A and 6.5% (4/62) in group B, without statistical significance. CONCLUSION: AP was no more advantageous than MPA in terms of operative time, postoperative course and prevention of recurrent pneumothorax. Therefore, complete resection of bullae and existence of residual bullae are more important factors in reducing the incidence of recurrent pneumothorax than pleural symphysis.
Blister
;
Chest Tubes
;
Drainage
;
Follow-Up Studies
;
Hemorrhage
;
Humans
;
Incidence
;
Length of Stay
;
Operative Time
;
Pleurodesis
;
Pneumothorax
;
Recurrence
;
Reoperation
;
Retrospective Studies
;
Thoracic Surgery, Video-Assisted
6.Differential microbiota network according to colorectal cancer lymph node metastasis stages
Yeuni YU ; Donghyun HAN ; Hyomin KIM ; Yun Hak KIM ; Dongjun LEE
Journal of Genetic Medicine 2023;20(2):52-59
Purpose:
Colorectal cancer (CRC) is a common malignancy worldwide and the second leading cause of cancer-related deaths. In addition, lymph node metastasis in CRC is considered an important prognostic factor for predicting disease recurrence and patient survival. Recent studies demonstrated that the microbiome makes substantial contributions to tumor progression, however, there is still unknown about the microbiome associated with lymph node metastasis of CRC. Here, we first reported the microbial and tumor-infiltrating immune cell differences in CRC according to the lymph node metastasis status.
Materials and Methods:
Using Next Generation Sequencing data acquired from 368 individuals diagnosed with CRC (N0, 266; N1, 102), we applied the LEfSe to elucidate microbial differences. Subsequent utilization of the Kaplan-Meier survival analysis enabled the identification of particular genera exerting significant influence on patient survival outcomes.
Results
We found 18 genera in the N1 group and 3 genera in the N0 group according to CRC lymph node metastasis stages. In addition, we found that the genera Crenobacter (P=0.046), Maricaulis (P=0.093), and Arsenicicoccus (P=0.035) in the N0 group and Cecembia (P=0.08) and Asanoa (P=0.088) in the N1 group were significantly associated with patient survival according to CRC lymph node metastasis stages. Further, Cecembia is highly correlated to tumor-infiltrating immune cells in lymph node metastasized CRC.Concolusion: Our study highlights that tumor-infiltrating immune cells and intratumoral microbe diversity are associated with CRC. Also, this potential microbiome-based oncology diagnostic tool warrants further exploration.
7.Cumulative Trauma Disorders Among Shipyard Workers and Application of Baseline Checklist for Risk Assessment .
Sang Hwan HAN ; Nam Jong PAIK ; Donghyun PARK ; Ki Eon JANG ; Myung Hag LEE ; Jong Tae PARK ; Dae Sung KIM ; Yeon Sook LEE ; Kyung Ja PAIK ; Young Soo SHIN ; Dong Bin SONG
Korean Journal of Occupational and Environmental Medicine 1997;9(4):579-588
Cumulative trauma disorders were surveyed in a cross-sectional study of 100 male ship yard workers and 43 male office workers. And baseline checklist for risk assessment of cumulative trauma disorders was applicated in a ship making process. Cases of cumulative trauma disorders were defined using physical examinations and electronic diagnostic methods. Data on demographics, individual factors (medical condition), work organization and psychosocial aspects of work were obtained by questionnaire. Association between the above factors and cumulative trauma disorders were assessed by multiple logistic regression models. 29(29 %) participants of male shipyard workers and 4(9.2 %) study subjects of male office workers met our case definitions for cumulative trauma disorders. The myofascial pain syndrome of neck muscles(12 % of participants) and carpal tunnel syndrome(5 % of participants) were the major two medical conditions in shipyard workers. The odds of male shipyard workers for cumulative trauma disorders to male office workers was 3.15 after adjustment of age(95 % C.I. :2.25-5.44). And the variables such as duration of present job, HIVD condition, and surges in workload were associated at least one of the cumulative trauma disorders in the final models (p<0.05) . This study indicates that work related upper extremity musculoskeletal disorders are relatively common among shipyard workers, and shows that the psychosocial factors is not likely to be related to the occur rences of these disorders in heavy workers. Also we developed baseline checklist for risk assessment of cumulative trauma disorders. The checklist was unique in that its expected users were industrial hygienists and occupational healthing nurses who did not have much ergonomic background and in that it was targeted to Korean workers in various types. As the first application of the checklist, shipyard workers were evaluated.
Checklist*
;
Cross-Sectional Studies
;
Cumulative Trauma Disorders*
;
Demography
;
Humans
;
Logistic Models
;
Male
;
Myofascial Pain Syndromes
;
Neck
;
Occupational Health
;
Physical Examination
;
Psychology
;
Questionnaires
;
Risk Assessment*
;
Ships
;
Upper Extremity
8.Cumulative Trauma Disorders Among Shipyard Workers and Application of Baseline Checklist for Risk Assessment .
Sang Hwan HAN ; Nam Jong PAIK ; Donghyun PARK ; Ki Eon JANG ; Myung Hag LEE ; Jong Tae PARK ; Dae Sung KIM ; Yeon Sook LEE ; Kyung Ja PAIK ; Young Soo SHIN ; Dong Bin SONG
Korean Journal of Occupational and Environmental Medicine 1997;9(4):579-588
Cumulative trauma disorders were surveyed in a cross-sectional study of 100 male ship yard workers and 43 male office workers. And baseline checklist for risk assessment of cumulative trauma disorders was applicated in a ship making process. Cases of cumulative trauma disorders were defined using physical examinations and electronic diagnostic methods. Data on demographics, individual factors (medical condition), work organization and psychosocial aspects of work were obtained by questionnaire. Association between the above factors and cumulative trauma disorders were assessed by multiple logistic regression models. 29(29 %) participants of male shipyard workers and 4(9.2 %) study subjects of male office workers met our case definitions for cumulative trauma disorders. The myofascial pain syndrome of neck muscles(12 % of participants) and carpal tunnel syndrome(5 % of participants) were the major two medical conditions in shipyard workers. The odds of male shipyard workers for cumulative trauma disorders to male office workers was 3.15 after adjustment of age(95 % C.I. :2.25-5.44). And the variables such as duration of present job, HIVD condition, and surges in workload were associated at least one of the cumulative trauma disorders in the final models (p<0.05) . This study indicates that work related upper extremity musculoskeletal disorders are relatively common among shipyard workers, and shows that the psychosocial factors is not likely to be related to the occur rences of these disorders in heavy workers. Also we developed baseline checklist for risk assessment of cumulative trauma disorders. The checklist was unique in that its expected users were industrial hygienists and occupational healthing nurses who did not have much ergonomic background and in that it was targeted to Korean workers in various types. As the first application of the checklist, shipyard workers were evaluated.
Checklist*
;
Cross-Sectional Studies
;
Cumulative Trauma Disorders*
;
Demography
;
Humans
;
Logistic Models
;
Male
;
Myofascial Pain Syndromes
;
Neck
;
Occupational Health
;
Physical Examination
;
Psychology
;
Questionnaires
;
Risk Assessment*
;
Ships
;
Upper Extremity
9.Cerebellar encephalopathy from diminazene aceturate (beneril) toxicity in a dog.
Donghyun HAN ; Won Kyoung YOON ; Changbaig HYUN
Korean Journal of Veterinary Research 2014;54(3):193-196
A 2-year old castrated male Alaskan malamute was referred with primary complaints of marked anemia, hemeglobinuria and depression. Laboratory tests revealed canine babesiois with severe anemia. The dog was treated by blood transfusion and beneril (diminazene aceturate, 3.5 mg/kg IM). Two days after Beneril injection, the dog suddenly showed ataxia progressing to paresis. MRI revealed irregularly diffused lesions in the cerebellum. The case was tentatively diagnosed as cerebellar encephalopathy caused by diminazene toxicity. The dog successfully recovered following steroid therapy.
Anemia
;
Animals
;
Ataxia
;
Blood Transfusion
;
Cerebellar Ataxia
;
Cerebellum
;
Depression
;
Diminazene*
;
Dogs*
;
Humans
;
Magnetic Resonance Imaging
;
Male
;
Paresis
10.Cerebellar encephalopathy from diminazene aceturate (beneril) toxicity in a dog.
Donghyun HAN ; Won Kyoung YOON ; Changbaig HYUN
Korean Journal of Veterinary Research 2014;54(3):193-196
A 2-year old castrated male Alaskan malamute was referred with primary complaints of marked anemia, hemeglobinuria and depression. Laboratory tests revealed canine babesiois with severe anemia. The dog was treated by blood transfusion and beneril (diminazene aceturate, 3.5 mg/kg IM). Two days after Beneril injection, the dog suddenly showed ataxia progressing to paresis. MRI revealed irregularly diffused lesions in the cerebellum. The case was tentatively diagnosed as cerebellar encephalopathy caused by diminazene toxicity. The dog successfully recovered following steroid therapy.
Anemia
;
Animals
;
Ataxia
;
Blood Transfusion
;
Cerebellar Ataxia
;
Cerebellum
;
Depression
;
Diminazene*
;
Dogs*
;
Humans
;
Magnetic Resonance Imaging
;
Male
;
Paresis