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- 저자 : Nabiyev, Rifkat I. (검색결과 2 건)
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Prashant Adhikari,Vugar Nabi Nabiyev,Sinan Bahadir,Selim Ayhan,Selcen Yuksel,Selcuk Palaoglu,Emre Acaroglu 대한척추외과학회 2020 Asian Spine Journal Vol.14 No.1
Study Design: Retrospective case series with a historical control group. Purpose: To compare the deep wound infection rates in patients undergoing spinal surgery with the application of topical intrawound vancomycin powder (TIVP) in the surgical site in addition to standard systemic prophylaxis with those in a matched historical cohort of patients for whom TIVP was not used. Overview of Literature: Surgical site infection (SSI) after spine surgery is debilitating and is responsible for a significant increase in the health care costs, hospital stay, and morbidities. Although the application of TIVP before surgical closure is a promising method for reducing the SSI rate after spine surgery, its use is controversial, and currently, research trials are focusing on identifying its safety, efficacy, and the potential patient population. Methods: A group of 88 patients who underwent posterior spinal surgery with TIVP administration (treatment group) was compared to a historical control group of 70 patients who had received only standard systemic intravenous prophylaxis (control group) for the analysis of deep SSI rate and the involved organisms. Results: The overall rate of deep SSIs was 2.5% (4/158). All the SSIs were observed in patients who had posterior instrumentation and fusion for ≥3 levels. In the treatment group, the SSI rate was 3.4% (3/88), and the bacteria isolated were Escherichia coli (n=2) and Pseudomonas aeruginosa (n=1). In the control group, the infection rate was 1.4% (1/70), and the isolated bacteria were Morganella morganii and Staphylococcus epidermidis. No statistically significant association was found between the SSI rates of the treatment and control groups. Conclusions: Although the difference in the SSI rates was not statistically significant, the present results suggest that TIVP administration could not reduce the risk of deep SSIs after spinal surgery. Moreover, TIVP administration might also affect the underlying pathogens by increasing the propensity for gram-negative species.
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Two-point <sup> G 1 </sup> Hermite interpolation in biangular coordinates
Ziatdinov, Rushan,Kim, Tae-wan,Nabiyev, Rifkat I. Koninklijke Vlaamse Ingenieursvereniging 2015 Journal of computational and applied mathematics Vol.287 No.-
<P><B>Abstract</B></P> <P>We construct <SUP> G 1 </SUP> Hermite interpolating curves in biangular coordinates, and provide sufficient conditions for their convexity. In a biangular coordinate system, the problem reduces to that of choosing suitable functions interpolating the biangular coordinates of the curve at its end points. The simplest linear equations, γ = ( ( 1 − t ) α , t β ) , in biangular coordinates correspond to a sectrix of Maclaurin, which we extend by introducing two shape parameters that pull the curve towards the sides of its triangular envelope. In addition, we consider a class of curves whose biangular coordinates have a constant sum, and we analyze their shape and curvature.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The equations of most curves in biangular coordinate system are not yet known. </LI> <LI> We construct <SUP> G 1 </SUP> Hermite interpolating curves in biangular coordinates. </LI> <LI> Interpolation problem reduces to choosing suitable functions in biangular coordinates. </LI> <LI> The simplest linear equations correspond to the sectrix of Maclaurin. </LI> <LI> Proposed interpolation method may reduce the computational cost in some cases. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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