1.Correction: Characteristics of Pediatric Pancreatitis on Magnetic Resonance Cholangiopancreatography.
Jae Yeon HWANG ; Hye Kyung YOON ; Kyung Mo KIM
Pediatric Gastroenterology, Hepatology & Nutrition 2015;18(3):216-216
The errors were discovered after publication: missing references and missing words.
2.Usefulness of 201Tl Myocardial Perfusion SPECT in Prediction of Left Ventricular Remodeling following an Acute Myocardial Infarction.
Seok Nam YOON ; C H PARK ; Kyung Hoon HWANG
Korean Journal of Nuclear Medicine 2000;34(1):30-38
PURPOSE: We investigated the role of myocardial perfusion SPECT in prediction of ventricular dilatation and the role of revascularization including thrombolytic therapy and PTCA in prevention of ventricular dilatation after an acute myocardial infarction (AMI). MATERIALS AND METHODS: We performed dipyridamole stress, 4 hour redistribution, and 24 hour reinjection Tl-201 SPECT in 16 patients with AMI two to nine days after attack. Perfusion and wall motion abnormalities were quantified by perfusion index (PI) and wall motion index (WMI). Left ventricular ejection fraction (LVEF), WMI and ventricular volume were measured within 1 week of AMI and after average of 6 months. According to serial changes of left ventricular end-diastolic volume (LVEDV), patients were divided into two groups. We compared WMI, PI and LVEF between the two groups. Relationships among degree of volume, stress-rest PI, WMI, CKMB, Q wave, LVEF and revascularization were analysed using multivariate analysis. RESULTS: Only initial rest perfusion index was significantly different between the two groups (p<0.05). While initial LVEF, stress PI, CKMB, trial of revascularization procedure, presence of Q wave and WMI were not significantly different between the two groups. Eight of 16 patients (50%) showed LV dilatation on follow-up echocardiography. Three of 3 patients (100%) who did not undergo revascualrization procedure documented LV dilatation. And only 5 (38%) of the remaining 13 patients who underwent revascularization revealed LV dilatation. There was no difference in infarct location between the two groups. By multivariate linear regression analysis in patients only undergoing revascularization, rest perfusion index was the only significant factor. CONCLUSION: Myocardial perfusion SPECT performed prior to revascularization was useful in prediction of LV dilatation after an AMI. Rest perfusion index on myocardial perfusion plays as a significant predictor of left ventricular dilatation after AMI. And revascularization appears to be a valuable procedure in alleviating LV dilatation after AMI with or without viable myocardium in a limited number of patients studied retrospectively.
Dilatation
;
Dipyridamole
;
Echocardiography
;
Follow-Up Studies
;
Humans
;
Linear Models
;
Multivariate Analysis
;
Myocardial Infarction*
;
Myocardium
;
Perfusion*
;
Retrospective Studies
;
Stroke Volume
;
Thrombolytic Therapy
;
Tomography, Emission-Computed, Single-Photon*
;
Ventricular Remodeling*
3.Percutaneous Balloon Mitral Vavuloplasty under General Anesthesia in Patient with Mitral Stenosis and Schizophrenia.
Jung Han YOON ; Keum Soo PARK ; Kyung Hoon CHOE ; Kyung Bong YOON ; Sung Oh HWANG
Korean Circulation Journal 1992;22(6):1050-1054
Since the introduction of percutaneous mitral valvotomy(PMV) in 1984, PMV was an effecive alternative to surgical commissurotomy in selected patients with severe mitral stenosis. Also PMV was an excellent palliative strategy in such patients who were high risk for operative management or longterm anticoagulation was not feasible. We performed PMV in a patient with very tight mitral stenosis and severe pulmonary hypertension under the general anesthesia because the patient was anticipated to be uncooperative due to mental problem, who was diagnosed as schizophrenia 16 years ago. Robinol was used for premedication and i.v fentanyl was used for maintenance of anesthesia. Inoue balloon was introduced into the LV and gradual ballooning was performed with favorable results. Total anesthesia time and interval from internal jugular vein puncture to the completion of valvuloplasty were 1 hour 45 min and 40 minutes respectively. Hemodynamic variables were improved immediately after intervention and mitral valve area was increased from 0.5cm2 to 1.3cm2.
Anesthesia
;
Anesthesia, General*
;
Fentanyl
;
Hemodynamics
;
Humans
;
Hypertension, Pulmonary
;
Jugular Veins
;
Mitral Valve
;
Mitral Valve Stenosis*
;
Premedication
;
Punctures
;
Schizophrenia*
4.Usefulness and Limitation of 24 Hour Reinjection Images to Assess Myocardial Viability in Patients with Acute Myocardial Infarction.
Seok Nam YOON ; C H PARK ; Jun Han SHIN ; Myung Ho YOON ; Kyung Hoon HWANG
Korean Circulation Journal 2001;31(1):74-82
OBJECTIVE: The study was performed to evaluate whether thallium reinjection (RI) distinguishes viable from nonviable myocardium among myocardial segments which showed persistent perfusion defect (PD) in patients with acute myocardial infarction (AMI). MATERIALS AND METHODS: We studied 22 patients underwent PTCA after AMI. SPECT was performed in all patients using dipyridamole stress- 4 hour redistribution (RD) followed by 24 hour RI protocols. Dysfunctional segs were classified into 5 groups: 1) normal, 2) reversible, 3) mild to moderate PD, 4) severe PD and 5) reverse redistribution (RR). All patients underwent follow up echocardiography after 4 months to assess regional wall motion (WM) improvement such as a criteria of viable myocardium. RESULTS: A total of 127 segs with abnormal WM was analyzed. Of 74 segs with PD, 17 (23%) showed enhanced uptake after 24 hour RI. Five of 17 segs (29%) with PD that responded to RI with enhanced thallium uptake showed WM improvement. WM improvement were seen in the 24 of 57 segs (42%) not responding to RI. All four segs (100%) with RR that responded to RI showed improvement. WM improvement were not seen in the 5 of 8 segs (71%) with RR not responding to thallium RI. Eleven (73%) of 15 segs with mild-moderate PD after RI showed improvement, but 33% of segs with severe PD after RI did not showed improvement. Segs with mild-moderate PD after RI and fill in after RI showed improvement in comparison to segs with severe PD after RI(p<0.05). CONCLUSIONS: These data indicate that because only small proportion of PD showed further perfusion improvement after RI and predictive value by the uptake after RI was low, there was limited role of RI after myocardial infarction. Usefulness of RI could be found in segs showing RR responding to RI in AMI reflects viable myocardium.
Dipyridamole
;
Echocardiography
;
Follow-Up Studies
;
Humans
;
Myocardial Infarction*
;
Myocardium
;
Perfusion
;
Thallium
;
Tomography, Emission-Computed, Single-Photon
5.Effectiveness of Intervntion for Cardiovascular Disease Prevention in Construction Workers.
Sun Kyung HWANG ; Yoon Ji LEE ; Bo Kyung KIM
Korean Journal of Occupational Health Nursing 2017;26(2):74-84
PURPOSE: This study aimed to assess the risk of developing cardiovascular disease (CVD) and to evaluate the effects of intervention for CVD prevention in construction workers. METHODS: A total of 497 workers participated the health status survey and finally 90 workers were analyzed for evaluation of the intervention with the one-group pretest-posttest design. The data were collected from the questionnaires and health examinations in the healthcare service for road constructor's CVD prevention as secondary analysis. The intervention of the healthcare was composed of CVD prevention education for all workers and face to face counselling for the high risk group of CVD risk during 6 months in workplace. Data were analyzed with descriptive statistics, χ² test, Wilcoxon signed rank test, and paired t-test. RESULTS: The moderate and high risk groups of CVD were 9.7% and 0.8%. After the intervention, the physical activity (MET-min/week) significantly increased (Z=-5.46, p<.001). But, there were no significant differences in blood pressure, fasting glucose, body mass index, and CVD risk appraisals between pre and post intervention. CONCLUSION: The findings imply that it is necessary to develop the health promotion program for construction workers which fully reflects the characteristics of individuals and the organization.
Blood Pressure
;
Body Mass Index
;
Cardiovascular Diseases*
;
Delivery of Health Care
;
Education
;
Fasting
;
Glucose
;
Health Promotion
;
Motor Activity
6.A Case Report of Mantle Cell Lymphoma in Leukemic Phase.
Mi Won HWANG ; Hyun Kyung CHOI ; Soo Young YOON ; Ae Rhee KIM ; Kap No LEE
Korean Journal of Clinical Pathology 1997;17(4):539-546
Recently, we experienced a patient with a B cell leukemia which could not be classified as chronic lymphocytic leukemia (CLL), prolymphocytic leukemia (PL) or follicular lymphoma in leukemic phase. He is a 58-year-old male and suffered from progressive lymphadenopathy at both inguinal and cervical areas. His blood film showed lymphocytosis (79%), and the cells were heterogeneous in size and shape. Twenty-five percent of the lymphocytes had nuclear irregularities or cleavages unlike the lymphocytes of CLL In which the cells often shows monomorphic features, small size with scanty cytoplasm and round nucleus. The bone marrow trephine biopsy specimen showed a diffuse pattern of infiltration of atypical Iymphoid cells. The lymph node histology showed atypical lymphoid colls proliferated as wide mantles around non-neoplastic appearing germinal centers. The immunophenotype of circulating lymphocytes in peripheral blood showed strong reactivity with CD5, CDl9 and CD20 without expression of CD2, CD3, CD7, CD10, CD22 and CD23. Although this case resembled CLL, the laboratory features showed major differences, notably in the Peripheral blood morphology, histology Patterns and the membrane Phenotype. By combining these data, we diagnosed this case as a leukemic phase of mantle cell lymphoma.
Biopsy
;
Bone Marrow
;
Cytoplasm
;
Germinal Center
;
Humans
;
Leukemia, B-Cell
;
Leukemia, Lymphocytic, Chronic, B-Cell
;
Leukemia, Prolymphocytic
;
Lymph Nodes
;
Lymphatic Diseases
;
Lymphocytes
;
Lymphocytosis
;
Lymphoma, Follicular
;
Lymphoma, Mantle-Cell*
;
Male
;
Membranes
;
Middle Aged
;
Phenotype
7.Biochemical Tests for Differential Identification of Enterococci with VanC phenotype.
Young UH ; In Ho JANG ; Gyu Yel HWANG ; Mi Kyung LEE ; Kap Jun YOON
Korean Journal of Clinical Microbiology 2000;3(1):30-35
BACKGROUND: Pigment production and acidification of ribose are most frequently used biochemical tests for the differentiation of three enterococcal species carrying vanC genes such as Enterococcus gallinarum, Enterococcus casseliflavus, and Enterococcus flavescens. However, pigment production may occasionally be negative in E. casseliflavus, and some of E. casseliflavus may be negative or delayed reaction with ribose fermentation test. So, we performed this study to find out biochemical tests capable of distinguishing the strains possessing vanC genotypes. METHOD: A total of 17 enterococci composed of 14 clinical isolates with motility or pigment positive strains and three ATCC strains(E. gallinarum ATCC 49573, E. casseliflavus ATCC 25788, and E. flavescens ATCC 49997) Were tested by multiplex PCR of the vanC genes(vanC-1, vanC-2 and vanC-3)and various biochemical tests. RESULTS: Among the 17 isolates including three ATCC control strains, four were genotyped as VanC-1, 11 were VanC-2, one were vanC-2/3, and any of vanC genes were not detected in one clinical isolate, respectively, Among the enterococci with vanC genotype, acid production from alphaD-cyclodextrin and hippurate hydrolysis were positive only in VanC-1 gneotype(E. gallinarum), acid production from glycerol and methyl-alpha-D-mannopyranoside were positive only in vanC-2 genotype(E. casseliflavus), and acid production from rhamnose and pigment production were negative only in VanC-1 genotype. Acid production from alphaD-cyclodextrin was negative only in vanC-2 genotype. The positive rate of ribose fermentation of VanC-1, VanC-2, and VanC-2/3(E. flavescens) genotype were 100%, 82%, and 0%, respectively. CONCLUSION: Acid production from rhamnose, alphaD-cyclodextrin, betaD-cyclodextrin, glycerol and methly-alphaD-mannopyranoside, pigment production, and hippurate hydrolysis test were useful biochemical tests for differentitating E. gallinarum form E. casseliflavus. The production of acid from alphaD-cyclodextrin, glycerol, methyl-alpha-D-mannopyranoside and were suitable biochemical tests for differentiating E. casseliflavus from E. flavescens.
Enterococcus
;
Fermentation
;
Genotype
;
Glycerol
;
Hydrolysis
;
Multiplex Polymerase Chain Reaction
;
Phenotype*
;
Rhamnose
;
Ribose
8.F-18 FDG Uptake in a Toxic Autonomous Thyroid Nodule.
Myoung Hoon LEE ; Chan H PARK ; Hyun Soo KIM ; Seok Nam YOON ; Kyung Hoon HWANG
Korean Journal of Nuclear Medicine 2001;35(4):286-287
No abstract available.
Thyroid Gland*
;
Thyroid Nodule*
9.Pregnancy in a rudimentary uterine horn with 40 wks gestation.
Bong Kyu LEE ; Kyung Ok YOON ; Nam Ki LEE ; Doo Pyo KIM ; Ik Ha HWANG
Korean Journal of Obstetrics and Gynecology 1991;34(2):289-292
No abstract available.
Animals
;
Horns*
;
Pregnancy*
10.Pregnancy in a rudimentary uterine horn with 40 wks gestation.
Bong Kyu LEE ; Kyung Ok YOON ; Nam Ki LEE ; Doo Pyo KIM ; Ik Ha HWANG
Korean Journal of Obstetrics and Gynecology 1991;34(2):289-292
No abstract available.
Animals
;
Horns*
;
Pregnancy*