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        Increased Readmission Risk and Healthcare Cost for Delirium Patients without Immediate Hospitalization in the Emergency Department

        I Chun Ma,Kao Chin Chen,Wei Tseng Chen,Hsin Chun Tsai,Chien-Chou Su,Ru-Band Lu,Po See Chen,Wei Hung Chang,Yen Kuang Yang 대한정신약물학회 2018 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.16 No.4

        Objective: Hospitalization of patients with delirium after visiting the emergency department (ED) is often required. However, the readmission risk after discharge from the ED should also be considered. This study aimed to explore whether (i) immediate hospitalization influences the readmission risk of patients with delirium; (ii) the readmission risk is affected by various risk factors; and (iii) the healthcare cost differs between groups within 28 days of the first ED visit. Methods: Using the National Health Insurance Research Database, the data of 2,780 subjects presenting with delirium at an ED visit from 2000 to 2008 were examined. The readmission risks of the groups of patients (i.e., patients who were and were not admitted within 24 hours of an ED visit) within 28 days were compared, and the effects of the severities of different comorbidities (using Charlson’s comorbidity index, CCI), age, gender, diagnosis and differences in medical healthcare cost were analyzed. Results: Patients without immediate hospitalization had a higher risk of readmission within 3, 7, 14, or 28 days of discharge from the ED, especially subjects with more severe comorbidities (CCI≥3) or older patients (≥65 years). Subjects with more severe comorbidities or older subjects who were not admitted immediately also incurred a greater healthcare cost for re-hospitalization within the 28-day follow-up period. Conclusion: Patients with delirium with a higher CCI or of a greater age should be carefully considered for immediate hospitalization from ED for further examination in order to reduce the risk of re-hospitalization and cost of healthcare.

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        Analysis of Spatial and Temporal Protein Expression in the Cerebral Cortex after Ischemia-Reperfusion Injury

        Yuan-Hao Chen,Yung-Hsiao Chiang,Hsin-I Ma 대한신경과학회 2014 Journal of Clinical Neurology Vol.10 No.2

        Background and Purpose Hypoxia, or ischemia, is a common cause of neurological deficits in the elderly. This study elucidated the mechanisms underlying ischemia-induced brain injury that results in neurological sequelae. Methods Cerebral ischemia was induced in male Sprague-Dawley rats by transient ligationof the left carotid artery followed by 60 min of hypoxia. A two-dimensional differential proteome analysis was performed using matrix-assisted laser desorption ionization-time-of-flightmass spectrometry to compare changes in protein expression on the lesioned side of the cortexrelative to that on the contralateral side at 0, 6, and 24 h after ischemia. Results The expressions of the following five proteins were up-regulated in the ipsilateralcortex at 24 h after ischemia-reperfusion injury compared to the contralateral (i.e., control)side: aconitase 2, neurotensin-related peptide, hypothetical protein XP-212759, 60-kDa heatshock protein, and aldolase A. The expression of one protein, dynamin-1, was up-regulatedonly at the 6-h time point. The level of 78-kDa glucose-regulated protein precursor on the lesioned side of the cerebral cortex was found to be high initially, but then down-regulated by 24 hafter the induction of ischemia-reperfusion injury. The expressions of several metabolic enzymes and translational factors were also perturbed soon after brain ischemia. Conclusions These findings provide insights into the mechanisms underlying the neurodegenerative events that occur following cerebral ischemia.

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