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JYMS : Journal of Yeungnam Medical Science

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Jin Wook Chung 2 Articles
The usefulness of newly developed R2CHA2DS2-VASc score and comparison with CHADS2 and CHA2DS2-VASc scores in atrial fibrillation patients.
Jae Hoon Kwak, Se Hwan Yeo, Yeo Un Kim, Jin Suk Lee, Byong Kyu Kim, Jin Wook Chung, Jun Ho Bae, Deuk Young Nah, Kwan Lee
Yeungnam Univ J Med. 2016;33(1):8-12.   Published online June 30, 2016
DOI: https://doi.org/10.12701/yujm.2016.33.1.8
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AbstractAbstract PDF
BACKGROUND
The decision to administer oral anticoagulation therapy depends on accurate assessment of stroke risk in patients with atrial fibrillation (AF). Various stroke risk stratification schemes have been developed to help inform clinical decision making. The CHADS2 and CHA2DS2-VASc scores have been used in estimating the risk of stroke in patients with AF. Recently R2CHA2DS2-VASc score was developed. The objective of the current study is to validate the usefulness of the R2CHA2DS2-VASc score and to compare the accuracy of the CHADS2, CHA2DS2-VASc, and R2CHA2DS2-VASc scores in predicting a patient's risk of stroke. METHODS: Based on medical records, we conducted a retrospective study of patients hospitalized with AF from March 2011 to July 2013. A total of 448 AF patients were included in this study. The receiver operating characteristic (ROC) curve analysis in MedCalc was used for comparison with respective diagnostic values. RESULTS: The patient characteristics showed male predominance (60.9%). Among the 448 AF patients, 131 (29.2%) patients had strokes during the study. A R2CHA2DS2-VASc score of more than 5 is the optimal cut-off value for prediction of stroke. A risk score of three, the area under the ROC curve (AUC) of R2CHA2DS2-VASc score (AUC 0.631; 95% confidence interval, 0.585-0.679) was the highest. A significant difference was observed between AUC for R2CHA2DS2-VASc, CHADS2, and CHA2DS2-VASc scores, but no meaningful difference between CHADS2 and CHA2DS2-VASc scores. CONCLUSION: We determined the usefulness of the R2CHA2DS2-VASc score, which showed better association with stroke than the CHADS2 and CHA2DS2-VASc scores.
A Case of Dermatomyositis with Secondary Organizing Pneumonia.
Chul Yun Park, Jung Seok Chung, Jin Wook Chung, Choong Ki Lee, Dae Sung Hyun, Jung Yoon Choe
Yeungnam Univ J Med. 2008;25(2):117-123.   Published online December 31, 2008
DOI: https://doi.org/10.12701/yujm.2008.25.2.117
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AbstractAbstract PDF
Dermatomyositis is characterized by progressive, symmetric, proximal muscle weakness and a nonsuppurative inflammatory myopathy of unknown etiology involving predominantly skeletal muscles. It is also characterized by typical skin lesions. Interstitial lung disease has a poor prognosis when it is associated with dermatomyositis. Organizing pneumonia is a disease in which granulation tissue fills the lumina of terminal and respiratory bronchioles and extends into the distal airspaces. The cryptogenic nature of the process is appreciated in that organizing pneumonia patterns of injury can be seen in secondary forms of the disease (secondary organizing pneumonia). Organizing pneumonia has been reported to occur in 5~10% in dermatomyositis-polymyositis patients. Anti-histidyl tRNA synthetase antibody (anti-Jo-1) is a predictive disease marker that is reported to occur in up to 70% of patients. We describe a 49-year-old male dermatomyositis patient who presented with organizing pneumonia and was found to have negative anti-Jo-1 antibody.

JYMS : Journal of Yeungnam Medical Science