“汉堡包”包扎法在耳部手术中预防健侧耳压力性损伤的研究

目的探讨“汉堡包”包扎法在耳部手术中的临床应用效果。方法回顾性分析自2013年1至2023年12月,河北医科大学第三医院烧伤整形科收治120例耳部手术患者,根据术中包扎方法分为两组,60例/组。观察组采用“汉堡包”法预防压力性损伤;对照组采用常规方法,不做特殊防护。统计分析两组患者术后健侧耳郭、头皮皮肤情况及压力性损伤发生率。结果观察组患者压力性损伤发生率显著低于对照组,差异具有统计学意义(P=0.035)。结论以记忆海绵为主要材料的“汉堡包”包扎法包裹耳部能够有效防止术中压力性损伤的发生,值得在临床工作中推广应用。

Group Analysis, Fractional Explicit Solutions and Conservation Laws of Time Fractional Generalized Burgers Equation

The generalized fractional Burgers equation is studied in this paper. Using the classical Lie symmetry method, all of the vector fields and symmetry reduction of the equation with nonlinearity are constructed. In particular, an exact solution ＆ provided by using the ansatz method. In addition, other types of exact solution are obtained via the invariant subspace method. Finally, conservation laws for this equation are derived.