1.Management of Alcohol Withdrawal Syndrome and Alcohol Withdrawal Seizure.
Kyoung HEO ; Yang Je CHO ; So Hee EUN ; Sung Chul LIM ; Jeehun LEE ; Pamela SONG
Journal of the Korean Neurological Association 2017;35(3):121-128
Alcohol withdrawal syndrome (AWS) is a common condition occurring after intentional or unintentional abrupt cessation of alcohol in an alcohol-dependent individual. AWS represents a major problem in our society and alcohol withdrawal seizure is the major cause of seizures encountered by neurology residents in the emergency department. Patients with AWS present with mild symptoms of tremulousness and agitation or more severe symptoms including withdrawal seizures and delirium tremens. Particularly, severe AWS can produce significant rates of the morbidity (complications) and mortality. When diagnosed and managed insufficiently, the morbidity and mortality rates increase. Nevertheless, patients with AWS may be neglected and are often marginalized and the teaching about AWS to neurology residents is usually minimal. Also, attending neurologists are often poorly informed on the topic. Although there is insufficient consensus about the optimal investigation and management, the purpose of this review is to serve as a summary of the appropriate identification and management of this important condition in a neurological setting.
Alcohol Withdrawal Delirium
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Alcohol Withdrawal Seizures*
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Consensus
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Dihydroergotamine
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Disease Management
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Emergency Service, Hospital
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Humans
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Mortality
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Neurology
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Seizures
2.Evaluation of the Impact of Iterative Reconstruction Algorithms on Computed Tomography Texture Features of the Liver Parenchyma Using the Filtration-Histogram Method
Pamela SUNG ; Jeong Min LEE ; Ijin JOO ; Sanghyup LEE ; Tae Hyung KIM ; Balaji GANESHAN
Korean Journal of Radiology 2019;20(4):558-568
OBJECTIVE: To evaluate whether computed tomography (CT) reconstruction algorithms affect the CT texture features of the liver parenchyma. MATERIALS AND METHODS: This retrospective study comprised 58 patients (normal liver, n = 34; chronic liver disease [CLD], n = 24) who underwent liver CT scans using a single CT scanner. All CT images were reconstructed using filtered back projection (FBP), hybrid iterative reconstruction (IR) (iDOSE4), and model-based IR (IMR). On arterial phase (AP) and portal venous phase (PVP) CT imaging, quantitative texture analysis of the liver parenchyma using a single-slice region of interest was performed at the level of the hepatic hilum using a filtration-histogram statistic-based method with different filter values. Texture features were compared among the three reconstruction methods and between normal livers and those from CLD patients. Additionally, we evaluated the inter- and intra-observer reliability of the CT texture analysis by calculating intraclass correlation coefficients (ICCs). RESULTS: IR techniques affect various CT texture features of the liver parenchyma. In particular, model-based IR frequently showed significant differences compared to FBP or hybrid IR on both AP and PVP CT imaging. Significant variation in entropy was observed between the three reconstruction algorithms on PVP imaging (p < 0.05). Comparison between normal livers and those from CLD patients revealed that AP images depend more strongly on the reconstruction method used than PVP images. For both inter- and intra-observer reliability, ICCs were acceptable (> 0.75) for CT imaging without filtration. CONCLUSION: CT texture features of the liver parenchyma evaluated using the filtration-histogram method were significantly affected by the CT reconstruction algorithm used.
Entropy
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Filtration
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Humans
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Liver Diseases
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Liver
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Methods
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Retrospective Studies
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Tomography, X-Ray Computed
3.Systemic White Blood Cell Count as a Biomarker Associated with Severity of Chronic Obstructive Lung Disease.
Hyeon Kyoung KOO ; Hyung Koo KANG ; Pamela SONG ; Hye Kyeong PARK ; Sung Soon LEE ; Hoon JUNG
Tuberculosis and Respiratory Diseases 2017;80(3):304-310
BACKGROUND: Chronic obstructive pulmonary disease (COPD), is a chronic inflammatory disorder. We evaluated whether white blood cell (WBC) count, is associated with the severity of COPD, independent of other inflammatory conditions, such as metabolic syndrome. METHODS: The WBC counts were compared between 1227 COPD patients and 8679 non-COPD adults older than 40. The relationships between the WBC count, lung function, and symptoms score in COPD patients, were determined, using general linear regression analyses. RESULTS: The WBC count was negatively associated with forced vital capacity (FVC, L), FVC (% predicted), forced expiry volume in one second (FEV₁, L), and FEV₁ (% predicted) in COPD patients. Additionally, the WBC count was independently associated with the quality of life measure, by EQ5D-index score. However, this relationship between WBC count, and disease severity, was not significant in current smokers, because of the confounding effect of smoking, on the WBC count. CONCLUSION: The WBC count is associated with current smoking status and COPD severity, and a risk factor for poor lung function, and quality of life, especially in non-currently smoking COPD patients. The WBC count can be used, as an easily measurable COPD biomarker.
Adult
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Humans
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Leukocyte Count*
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Leukocytes*
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Linear Models
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Lung
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Pulmonary Disease, Chronic Obstructive*
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Quality of Life
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Respiratory Function Tests
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Risk Factors
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Smoke
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Smoking
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Vital Capacity
4.Prognostic Implication of Focal Breast Edema on Preoperative Breast Magnetic Resonance Imaging in Breast Cancer Patients
Pamela SUNG ; Jong Yoon LEE ; Jong-Ho CHEUN ; In Sil CHOI ; Jin Hyun PARK ; Jeong Hwan PARK ; Byoung Hyuck KIM ; Sohee OH ; A Jung CHU ; Ki-Tae HWANG
Journal of Breast Cancer 2023;26(5):479-491
Purpose:
In this study, we investigated the prognostic implications of focal breast edema on preoperative breast magnetic resonance imaging (MRI) in patients with breast cancer.
Methods:
Data of 899 patients with breast cancer at a single institution were retrospectively analyzed. The patients were divided into an edema-positive group (EPG) and an edemanegative group (ENG) based on the presence of peritumoral, prepectoral, or subcutaneous edema. Two radiologists evaluated the presence or absence of focal edema and its subtypes on preoperative breast MRI. Clinicopathologic characteristics and survival outcomes were compared between the two groups and among the three subtypes using Pearson’s χ2 test, Kaplan–Meier estimator, and Cox proportional hazards model.
Results:
There were 399 (44.4%) and 500 (55.6%) patients in the EPG and ENG, respectively.The EPG showed significantly higher rates of axillary lymph node metastasis (55.6% vs.19.2%, p < 0.001) and lymphovascular invasion (LVI) (57.9% vs. 12.6%, p < 0.001) than the ENG. Patients in the EPG showed significantly worse overall survival (OS) rate (log-rank p < 0.001; hazard ratio [HR], 4.83; 95% confidence interval [CI], 2.56–9.11) and recurrencefree survival rate (log-rank p < 0.001; HR, 3.00; 95% CI, 1.94–4.63) than those in the ENG.After adjusting for other variables, focal breast edema remained a significant factor affecting the OS rate, regardless of the edema type. Specifically, the presence of subcutaneous edema emerged as the strongest predictor for OS with the highest HR (p < 0.001; HR, 9.10; 95% CI, 3.05–27.15).
Conclusion
Focal breast edema on preoperative breast MRI implies a higher possibility of LVI and axillary lymph node metastasis, which can lead to a poor prognosis. A detailed description of focal breast edema, especially subcutaneous edema, on preoperative breast MRI may provide prognostic predictions. More intensive surveillance is required for patients with breast cancer and focal preoperative breast edema.
5.Insomnia Symptoms and Mood Disturbances in Shift Workers with Different Chronotypes and Working Schedules
Su Jung CHOI ; Pamela SONG ; Sooyeon SUH ; Eun Yeon JOO ; Sung Ik LEE
Journal of Clinical Neurology 2020;16(1):108-115
BACKGROUND:
AND PURPOSE: Shift workers frequently suffer from insomnia and mood disturbances, but little is known about the relationships of these conditions with the chronotypes and different working schedules of shift workers. We hypothesized that different shift-work schedules are associated with different severities of sleep and mood disturbances, and that the individual chronotype plays a role in sleep disturbances in shift workers.
METHODS:
This study enrolled 276 participants, comprising 77 nurses working in a three-shift schedule (3S, 27.9%), 60 firefighters working in a 24-h-every-other-day shift schedule (EOD, 21.7%), and 139 day workers (DW, 50.4%). All of the participants completed the following questionnaires to assess their sleep disturbances, mood, and chronotype: Insomnia Severity Index (ISI), Epworth Sleepiness Scale, Hospital Anxiety and Depression Scale, and Morningness-Eveningness Questionnaire.
RESULTS:
ISI questionnaires were worse in both shift workers compare to DW, 35.1% of 3S, 23% of EOD had clinically significant insomnia (ISI score >14). Depressive mood and anxiety symptom were significantly worse in 3S compare to EOD. The sleep disturbance by ISI score had significant correlations with depressive mood and anxiety symptoms for both EOD and 3S (EOD: rho=0.57, rho=0.57, 3S: rho=0.37, rho=0.33 respectively). Chronotype type in shift workers had no significant correlation with sleep disturbance, depressive mood, nor anxiety symptom. However, after adjustment, the eveningness chronotype have relationship to the depressive mood in shift workers.
CONCLUSIONS
Sleep disturbances are more frequent in shift workers than DW. Depressive mood and anxiety symptoms were frequently reported in 3S, then EOD. Different shift schedules cab be a determinant of depressive mood and anxiety symptom.
6.A Disclosure Form for Work Submitted to Medical Journals: a Proposal from the International Committee of Medical Journal Editors
Darren B TAICHMAN ; Joyce BACKUS ; Christopher BAETHGE ; Howard BAUCHNER ; Annette FLANAGIN ; Fernando FLORENZANO ; Frank A FRIZELLE ; Fiona GODLEE ; Laragh GOLLOGLY ; Abraham HAILEAMLAK ; Sung Tae HONG ; Richard HORTON ; Astrid JAMES ; Christine LAINE ; Pamela W MILLER ; Anja PINBORG ; Eric J RUBIN ; Peush SAHNI
Journal of Korean Medical Science 2020;35(4):39-
No abstract available.
Disclosure
7.A Disclosure Form for Work Submitted to Medical Journals: a Proposal from the International Committee of Medical Journal Editors
Darren B TAICHMAN ; Joyce BACKUS ; Christopher BAETHGE ; Howard BAUCHNER ; Annette FLANAGIN ; Fernando FLORENZANO ; Frank A FRIZELLE ; Fiona GODLEE ; Laragh GOLLOGLY ; Abraham HAILEAMLAK ; Sung Tae HONG ; Richard HORTON ; Astrid JAMES ; Christine LAINE ; Pamela W MILLER ; Anja PINBORG ; Eric J RUBIN ; Peush SAHNI
Journal of Korean Medical Science 2020;35(4):e39-