1.A Case of Behcet's Syndrome with Superior Vena Cava Obstruction and Massive Pericardial Effusion.
Kil Hyeon CHO ; Jeong Hyun PARK ; Seung Hwan RYOO ; Hong Ok RYOO ; Dong Soo KIM ; Kyung Soon LEE
Korean Circulation Journal 1994;24(5):726-731
Behcet's syndrome has been known as multisystemic disease caused by nonspecific immune mediated vasculitis, but it's precise etiology is not yet identified. Among the various systemic manifestations, pericardial effusion is extremely rare, and pericardial tamponade caused by massive pericardial effusion in Behcet'sydrome has not been reported in the literature. We report a case of Behcet's syndrome manifested as SVC syndrome due to SVC and right atrial thrombus with massive pericardial effusion resulting cardiac tamponade with the review of the literature.
Behcet Syndrome*
;
Cardiac Tamponade
;
Pericardial Effusion*
;
Superior Vena Cava Syndrome*
;
Thrombosis
;
Vasculitis
;
Vena Cava, Superior*
2.Clinical Study of Neonatal Adrenal Lemorrhage.
Gwang Hoon LEE ; Eell RYOO ; Kang Ho CHO ; Sang Hee KIM ; Kil Hyun KIM ; Hak Soo LEE ; Ji Hae KIM
Journal of the Korean Society of Neonatology 1997;4(2):246-252
PURPOSE: Neonatal adrenal hemorrhage is not rare disease which can be caused by such risk factors as sepsis, large baby, birth trauma and asphyxia. The clinical manifestations include jaundice, anemia, abdominal mass and differentiation from neuroblastoma, renal vein thrombosis and adrenal abscess is needed. Through the clinical assessment of presenting features, we hope that this study be of any help to early detection and proper management of neonatal adrenal hemorrhage. METHODS: The 16 subjects out of neonates admitted to our hospital from July 1991 to June 1997 were diagnosed as neonatal adrenal hemorrhage. The risk factors, clinical manifestations, diagnostic methods and prognosis of neonatal adrenal hemorrhage were evaluated in these 16 cases. RESULTS: 1) Among 16 cases, males were 10 (62.5%) and females were 6 (37.5%). Mean birth weight was 3.601.08kg and mean gestational age was 39.82+1.08 week, and all were fullterm babies. In modes of delivery, vaginal deliveries were 12 cases (75.0%) and cesarean sections were 4 cases (25.0%). 2) 13 cases (81.2%) were involved in right side, 2 cases (12.5%) in left side and 1 case (6.3%) bilaterally. 3) The risk factors include sepsis in 6 cases (37.5%), large baby in 5 cases (31.3%), birth trauma in 5 cases<31.3%) and asphyxia in 3 cases (18.8%). 4) The clinical manifestations include jaundice in 7 cases (43.8%), anemia in 7 cases (43.8%), fever in 6 cases (37.5%) and abdominal mass in 3 cases (18.8%). 5) In the time of diagnosis, until 7 days of birth were 9 cases (56.2%), 8-14 days were 3 cases (18.8%), 15-21 days were 2 cases (12.5%) and 22-28 days were 2 cases (12.5%). Follow-up studies were done in 13 cases (81.2%), and tha lesions all decreased without any specific complications or sequelae. CONCLUSION: Neonatal adrenal hemorrhage can be diagnosed by abdominal ultrasono- gram in the presence of suggestive manifestations of jaundice, anemia, fever and abdominal mass, with relatively good prognosis. Differentiation from other conditions as well as avoidance of unnecessary explorations can be achieved by serial follow-up examinations of abdominal ultrasonogram.
Abscess
;
Anemia
;
Asphyxia
;
Birth Weight
;
Cesarean Section
;
Diagnosis
;
Female
;
Fever
;
Follow-Up Studies
;
Gestational Age
;
Hemorrhage
;
Hope
;
Humans
;
Infant, Newborn
;
Jaundice
;
Male
;
Neuroblastoma
;
Parturition
;
Pregnancy
;
Prognosis
;
Rare Diseases
;
Renal Veins
;
Risk Factors
;
Sepsis
;
Thrombosis
;
Ultrasonography
3.Ischemic Preconditioning in Isolated Rabbit Heart : Effect on Left Ventricular Function, Infarct Size, and Protein Kinase C*.
Ho Jun YOO ; Jun Soo PARK ; Hyun KIM ; Un Ho RYOO ; Bong Jin RAH ; Ho Dirk KIM
Korean Circulation Journal 1996;26(2):541-552
BACKGROUND: It has been demonstrated that ischemic preconditioning(IP, repetitive brief period of ischemia and reperfusion) enhances recovery of post-ischemic contractile dysfunction and reduces incidences of reperfusion-arrhythmia and infarct size after a prolonged ischemia. A lot of mechanisms have been proposed, however, controversies still remain. Recent studies suggested that IP could activate protein kinase C(PKC). Therefore, we measured left ventricular function, myocardial creatinin and PKC activities, and infarct size to assess whether IPs cardioprotective effect is related to PKC activation using isolated rabbit hearts. METHODS AND RESULTS: Hearts isolated from New Zealand White rabbits(1.5-2.0kg body weight) were perfused with Tyrode solution by Langendorff technique. After stabilization of baseline hemodynamics, the hearts were subjected to 60-min ischemia followed by 120-min reperfusion with IP(IP group, n=15) or without IP(control group, n=14), IP was induced by 4 cycles of 5-min global ischemia and 5-min reperfusion. Left ventricular function including developed pressure(LVEDP), dp/dt, heart rate(HR), and coronary flow(CF) was measured to determine the recovery of LVEDP, RPP(rate-pressure product, HRXLVEDP) and CF to baseline measurement. Frequency of arrhythmia was counted on reperfusion. Myocardial CK-MB, myocardial cytosolic and membrance PKC were measured and the infarct size was determined by staining with tetrazolium salt and planimetry. Data were analyzed by one-way ANOVA, Tukey's post-hoc test and t-test. There was no significant differences in the recovery of LVEDP, dp/dt, RPP, and CF and frequency of arrhythmia during reperfusion between the control and the IP groups. In comparison with the control groups, however, CK-MB was significantly lowered in the IP group(P < 0.05). Cytosolic PKC was significantly decreased but membrance PKC was increased(p < 0.05). These findings indicate that PKC was translocated and activated by IP. Furthermore infarct size was smaller and limited to the antero-lateral or posterior wall and papillary muscle in the IP group(p < 0.05). CONCLUSION: These results indicate that IP dose not improve post-ischemic contractile dysfunction after a prolonged ischemia of 60 minutes but has an infarct-limiting effect. This cardioprotective effect of IP may be related to PKC activation.
Arrhythmias, Cardiac
;
Cytosol
;
Heart*
;
Hemodynamics
;
Incidence
;
Ischemia
;
Ischemic Preconditioning*
;
New Zealand
;
Papillary Muscles
;
Protein Kinase C
;
Protein Kinases*
;
Reperfusion
;
Ventricular Function, Left*
4.Clinical Analysis of Puffer Fish Poisoning Cases.
Seung Hwan HYUN ; Chang Hwan SOHN ; Seung Mok RYOO ; Bum Jin OH ; Kyung Soo LIM
Journal of The Korean Society of Clinical Toxicology 2011;9(2):95-100
PURPOSE: Ingestion of puffer fish can be poisonous due to the presence of potent neurotoxins such as tetrodotoxin (TTX) found in its tissues. There are few clinical reports related to TTX. We performed this study to evaluate the clinical characteristics of TTX poisoning. METHODS: We conducted a retrospective study of the 41 patients diagnosed with TTX poisoning who visited the Seoul Asan medical center from July 2004 and December 2010. A review of patients'electronic medical records and patient telephone interviews were conducted. Diagnosis of TTX poisoning was confirmed by observing the casual link between puffer fish consumption and the development of typical TTX intoxication symptoms. RESULTS: The mean age of the patients included in the study was 46.6 years. The highest incidence of intoxication was observed in patients in their 50s (10 patients). Seasonal distribution of intoxication events included 10 in spring, 7 in summer, 10 in fall, and 14 in winter. In most cases, symptoms occurred within 1 hour of ingestion. A wide range of symptoms were associated with puffer fish ingestion affecting multiple body systems including neuromuscular (27 patients), gastrointestinal (19 patients), and cardiopulmonary/vascular (19 patients). All patients were treated with symptomatic and supportive therapy and recovered completely, without sequelae, within 48 hours. In three cases, ventilator support was required. CONCLUSION: TTX poisoning is not seasonally related, and patients admitted to the emergency room were observed with a wide range of symptoms. Where TTX poisoning is diagnosed, supportive therapy should be performed. Early intubation and ventilation is important, especially is cases of respiratory failure.
Aluminum Hydroxide
;
Carbonates
;
Eating
;
Emergencies
;
Humans
;
Incidence
;
Interviews as Topic
;
Intubation
;
Medical Records
;
Neurotoxins
;
Respiratory Insufficiency
;
Retrospective Studies
;
Seasons
;
Tetraodontiformes
;
Tetrodotoxin
;
Ventilation
;
Ventilators, Mechanical
5.C-erbB-2 Protein Expression and Correlation in Sera and Tumors of Non-Small Cell Lung Cancer Patients.
Hun Mo RYOO ; Sang Yeop LEE ; Kyung Hee LEE ; Myung Soo HYUN ; Mi Jin KIM
Journal of the Korean Cancer Association 2000;32(6):1100-1108
PURPOSE: We have examined the expression of c-erbB-2 oncogene in sera and tissues of non-small cell lung cancer patients. MATERIALS AND METHODS: Serum levels of c-erbB-2 protein were measured by an enzyme im munoassay in 55 patients with non-small cell lung cancer. Sera from patients with surgical therapy were evaluated again after surgery. Immunohistochemical staining was performed in 47 of these tumors. RESULTS: Elevated levels (> or =45 U/mL, control mean 2SD) were observed in 15% of 55 non-small cell lung cancer patients, as compared with none of control subjects (p<0.05). The incidence of elevated level was higher in the adenocarcinoma than squamous cell carcinoma (22% vs 4%, p<0.01). The serum levels of c-erbB-2 protein decreased significantly after surgical tumor ablation (p<0.01). Tissue overexpression was obtained in 23/47 cases (49%). The incidence of c-erbB-2 overexpression was higher in the adenocarcinoma (73% vs 29%, p<0.005). No relationship was found between c-erbB-2 protein expression in serum and tumor tissue and clinicopathologic feature. Elevated serum c-erbB-2 levels predicted tissue overexpression with sensitivity 30% and specificity 96%. There was relationship between serum level and expression in tumor tissue of c-erbB-2 protein. CONCLUSION: Serum and tissue levels of c-erbB-2 correlate in patients with non-small cell carcinoma. Serum c-erbB-2 protein may be a useful indicator of tumor burden in patients with non-small cell lung cancer.
Adenocarcinoma
;
Carcinoma, Non-Small-Cell Lung*
;
Carcinoma, Squamous Cell
;
Humans
;
Incidence
;
Oncogenes
;
Receptor, erbB-2*
;
Sensitivity and Specificity
;
Tumor Burden
6.A Case of Idiopathic Hypereosinophihc Syndrome Assoclated with Pulmonary Infiltration.
Hun Mo RYOO ; Young Soo KWEON ; Jin Hong CHUNG ; Kwan Ho LEE ; Hyun Woo LEE ; Dong Sug KIM ; Sam Beom LEE
Yeungnam University Journal of Medicine 1994;11(2):375-380
The idiopathic hypereosinophilic syndrome consists of peripheral blood eosinophilia of 1500/mm3 or more without a known cause, plus signs and symptoms of organ eosinophilia. The prognosis of HES without treatment is poor. However, about one third of the patients with this syndrome may respond to corticosteroid thrapy. Morever, the majority of the remainder may have a favorable response to hydroxyurea. We present here a case of hypereosinophilic syndrome without any identifiable causes, involving bone marrow, liver, lungs and cervical lymph node. We tried corticosteroid as a treatment but it showed no response. However the hydroxyurea showed good response.
Bone Marrow
;
Eosinophilia
;
Humans
;
Hydroxyurea
;
Hypereosinophilic Syndrome
;
Liver
;
Lung
;
Lymph Nodes
;
Prognosis
7.Analysis of Surveys to Determine the Real Prices of Ingredients used in School Foodservice
Seo-Hyun LEE ; Min A LEE ; Jae-Yoon RYOO ; Sanghyo KIM ; Soo-Youn KIM ; Hojin LEE
Korean Journal of Community Nutrition 2021;26(3):188-199
Objectives:
The purpose was to identify the ingredients that are usually surveyed for assessing real prices and to present the demand for such surveys by nutrition teachers and dietitians for ingredients used by school foodservice.
Methods:
A survey was conducted online from December 2019 to January 2020. The survey questionnaire was distributed to 1,158 nutrition teachers and dietitians from elementary, middle, and high schools nationwide, and 439 (37.9% return rate) of the 1,158 were collected and used for data analysis.
Results:
The ingredients which were investigated for price realities directly by schools were industrial products in 228 schools (51.8%), fruits in 169 schools (38.4%), and specialty crops in 166 schools (37.7%). Moreover, nutrition teachers and dietitians in elementary, middle, and high schools searched in different ways for the real prices of ingredients. In elementary schools, there was a high demand for price information about grains, vegetables or root and tuber crops, special crops, fruits, eggs, fishes, and organic and locally grown ingredients by the School Foodservice Support Centers. Real price information about meats, industrial products, and pickled processed products were sought from the external specialized institutions. In addition, nutrition teachers and dietitians in middle and high schools wanted to obtain prices of all of the ingredients from the Offices of Education or the District Office of Education.
Conclusions
Schools want to efficiently use the time or money spent on research for the real prices of ingredients through reputable organizations or to co-work with other nutrition teachers and dietitians. The results of this study will be useful in understanding the current status of the surveys carried out to determine the real price information for ingredients used by the school foodservice.
8.Analysis of Surveys to Determine the Real Prices of Ingredients used in School Foodservice
Seo-Hyun LEE ; Min A LEE ; Jae-Yoon RYOO ; Sanghyo KIM ; Soo-Youn KIM ; Hojin LEE
Korean Journal of Community Nutrition 2021;26(3):188-199
Objectives:
The purpose was to identify the ingredients that are usually surveyed for assessing real prices and to present the demand for such surveys by nutrition teachers and dietitians for ingredients used by school foodservice.
Methods:
A survey was conducted online from December 2019 to January 2020. The survey questionnaire was distributed to 1,158 nutrition teachers and dietitians from elementary, middle, and high schools nationwide, and 439 (37.9% return rate) of the 1,158 were collected and used for data analysis.
Results:
The ingredients which were investigated for price realities directly by schools were industrial products in 228 schools (51.8%), fruits in 169 schools (38.4%), and specialty crops in 166 schools (37.7%). Moreover, nutrition teachers and dietitians in elementary, middle, and high schools searched in different ways for the real prices of ingredients. In elementary schools, there was a high demand for price information about grains, vegetables or root and tuber crops, special crops, fruits, eggs, fishes, and organic and locally grown ingredients by the School Foodservice Support Centers. Real price information about meats, industrial products, and pickled processed products were sought from the external specialized institutions. In addition, nutrition teachers and dietitians in middle and high schools wanted to obtain prices of all of the ingredients from the Offices of Education or the District Office of Education.
Conclusions
Schools want to efficiently use the time or money spent on research for the real prices of ingredients through reputable organizations or to co-work with other nutrition teachers and dietitians. The results of this study will be useful in understanding the current status of the surveys carried out to determine the real price information for ingredients used by the school foodservice.
9.Identifying the perception of difficulty in emergency department utilization recognized by Daegu citizens during the COVID-19 pandemic and its contributing factors
Dae Hyeong KIM ; Hyun Wook RYOO ; Haewon JUNG ; Tae Chang JANG ; Kyeong Soo LEE ; Jong-yeon KIM
Journal of the Korean Society of Emergency Medicine 2022;33(6):616-630
Objective:
The purpose of this study was to identify if there was a perception of difficulty in using emergency department (ED) services during the coronavirus disease 2019 (COVID-19) pandemic and the contributing factors to this situation through a cross-sectional public survey in a metropolitan city.
Methods:
In November 2020, face-to-face interviews based on a structured questionnaire were conducted with 1,000 citizens. A multivariable logistic regression analysis was performed to identify the factors affecting the perception of difficulty in using the ED.
Results:
Of the respondents, 65.2% (58.9% male and 71.3% female) perceived difficulty in using ED services during the pandemic. By age, 69.8% of those who had this perception were under the age of 40 years ; 63.2% were 40-64 years old, and 61.1% were over the age of 65. Of the total number of respondents, 24.8% and 13.8% said they would hesitate to visit ED for chest pain and neurological symptoms, respectively. As a result of multivariate analysis, the significant contributing factors were age under 40 years old, female gender, fear of in-hospital COVID-19 contagion, emergency medical technician (EMT) referral to the ED, and prior experience with the emergency medical service (EMS) dispatch center.
Conclusion
A significant percentage of respondents perceived that it was difficult to use ED services during the COVID19 pandemic, even when experiencing chest pain and neurological symptoms, which require urgent treatment. Younger age, women, and fear of nosocomial COVID-19 contagion appear to have aggravated this situation. Conversely, prior experience with the EMS dispatch center and visits to the EMT-recommended ED facilitated ED utilization.
10.Ex vivo Expansion of Hematopoietic Cells and Amifostine Effects.
Hun Mo RYOO ; Sung Hwa BAE ; Myung Soo HYUN
Korean Journal of Hematology 2004;39(3):158-166
BACKGROUND: The possibility of cord blood transplantation in adults was limited by the amount of cord blood that could be collected. Cord blood transplantation after ex vivo expansion with cytokines have already been tried in adults. Amifostine is a phosphorylated aminothiol that affords broad cytoprotection from the myelosuppressive effects of antineoplastic agents. The purposes of this study were to investigate expansion of progenitor and myeloid cells after ex vivo culture of mononuclear cells (MNCs) in umbilical cord blood with growth factor and characterize hematopoietic activities of amifostine. METHODS: MNCs were cultured and ex vivo expanded into myeloid progenitors by using hematopoietic growth factors (IL-1beta, IL-3, IL-6, G-CSF, GM-CSF, SCF, EPO) which are known to stimulate differentiation and proliferation of myeloid progenitors. MNCs exposed to the appropriate amount of amifostine for 15 min were cultured in semisolid media and harvested at 24h intervals, and then apoptosis was assessed by propidium iodide staining. RESULTS: Myeloid colonies were successfully produced from MNCs. Maximal expansion was obtained with the combination of IL-3+SCF+G-CSF+GM-CSF. SCF was thought to be the most important growth factor for expansion of myeloid progenitor. Pretreatment with amifostine for 15 min stimulated formation of hematopoietic colonies at clinically relevant concentrations ranging from 1 to 100 micrometer. Increase in colony number compare to control were comparable after pretreatment with amifostine (10micrometer), and CFU-GEMM and BFU-E were highly responsive. Further enhancement of colony was not observed after prolonging the duration of pre- incubation exposure to 1, 8 and 24 hours. Amifostine enhanced IL-1 and IL-3 induced formation of CFU-GEMM and BFU-E. Incubation of MNCs with amifostine in suspension culture increased recovery of secondary colonies. Treatment with amifostine retarded cell loss and apoptosis, and promoted cell survival at 24, 48 and 72 hours in cytokine-deficient medium. CONCLUSION: Cord blood MNCs can be successfully expanded into myeloid progenitors by using hematopoietic growth factors. This investigation extend the previously recognized hematologic effects of amifostine, and indicate that in addition to its cytoprotective properties, amifostine is a stimulant of hematopoietic progenitor growth.
Adult
;
Amifostine*
;
Antineoplastic Agents
;
Apoptosis
;
Cell Survival
;
Cytokines
;
Cytoprotection
;
Erythroid Precursor Cells
;
Fetal Blood
;
Granulocyte Colony-Stimulating Factor
;
Granulocyte-Macrophage Colony-Stimulating Factor
;
Humans
;
Intercellular Signaling Peptides and Proteins
;
Interleukin-1
;
Interleukin-3
;
Interleukin-6
;
Myeloid Cells
;
Myeloid Progenitor Cells
;
Propidium