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OBJECTIVE To assess the diagnostic accuracy of the clinical pulmonary infection score in the diagnosis of ventilator-associated pneumonia in mechanically ventilated patients. METHODS We searched PubMed and the Cochrane database, and included only studies that compared clinical pulmonary infection score with quantitative microbiological analysis of samples(More)
BACKGROUND Self-directed learning is crucial to the professional development of nursing students, and which enables them to expand the knowledge and enhance the quality of their practice. A validated self-directed learning instrument is important not only in assessing the individual's self-directed learning level, but also in evaluating the effectiveness of(More)
Glasgow Prognostic Score (GPS) has been reported as a powerful prognostic tool for patients with advanced non–small cell lung cancer (NSCLC). The aim of this study was to assess the relationship between GPS and prognosis related tumor markers in patients with advanced NSCLC. We included 138 advanced NSCLC patients and twenty healthy controls in the study.(More)
This paper proposes a single-stage three-phase-to-single-phase current-fed high step-up ac-dc matrix converter. The proposed converter inserts a boost-type matrix converter, which is formed by three boost inductors and six bidirectional switches, between a three-phase ac source and a Cockcroft-Walton voltage multiplier (CWVM). By using this topology(More)
AIM SMXZF (a combination of ginsenoside Rb1, ginsenoside Rg1, schizandrin and DT-13) derived from Chinese traditional medicine formula ShengMai preparations) is capable of alleviating cerebral ischemia-reperfusion injury in mice. In this study we used network pharmacology approach to explore the mechanisms of SMXZF in the treatment of cardio-cerebral(More)
BACKGROUND Prognostic assessment is important for the management of patients with acute pulmonary embolism (APE). Pulmonary Embolism Severity Index (PESI) and simple PESI (sPESI) are new emerged prognostic assessment tools for APE. The aim of this meta-analysis is to assess the accuracy of the PESI and the sPESI to predict prognostic outcomes (all-cause and(More)
OBJECTIVE The aim of this analysis was to perform a meta-analysis assessing the relationship between isocitrate dehydrogenase 1 (IDH1) mutation and preoperative seizure in low-grade gliomas. METHODS Systematic computerised searches of the PubMed and Web of Knowledge were performed. The meta-analysis of pooled odds ratio (OR) and 95% confidence interval(More)
A multi-modulus programmable frequency divider architecture with 33.3% to 66.7% duty cycle output signal is presented. Key circuits of the architecture are 2/3 divider cells, which share the same logic and almost same circuit cells. This architecture can divide the input clock frequency by 2<sup>2</sup> to 2<sup>n+1</sup> &#x2212;1 with unit step increment,(More)
Growth hormone (GH) is increasingly used for treatment of pediatric brain tumors. However, controversy remains over its safety. This meta-analysis assessed whether GH treatment was associated with risk of recurrence or development of secondary neoplasm for brain tumors in children. Systematic computerized searches of PubMed and Web of Knowledge were(More)
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