目的探讨基于iPad的可视化床旁机在新生儿重症监护室(Neonatal Intensive Care Unit,NICU)床旁X线检查中的应用价值。方法收集我院2019年2月至2020年2月NICU需行床旁X线检查患者100例为研究对象,将患者随机分为对照组和观察组,每组50例...目的探讨基于iPad的可视化床旁机在新生儿重症监护室(Neonatal Intensive Care Unit,NICU)床旁X线检查中的应用价值。方法收集我院2019年2月至2020年2月NICU需行床旁X线检查患者100例为研究对象,将患者随机分为对照组和观察组,每组50例。对照组患者采用传统床旁X线机进行拍摄,观察组患者采用可视化床旁X线机进行拍摄,比较两组检查所用时间,拍片一次成功率及拍摄后图像的甲级片率等指标。结果传统床旁X线机拍片所用时间平均值为(5.97±0.16)min,一次性成功率为50%,甲级片率为72%;可视化床旁X线机拍片所用时间平均值为(5.84±0.17)min,一次性成功率为76%,甲级片率为92%。差异均有统计学意义(P<0.05)。结论相比于传统床旁X线机,可视化床旁X线机在NICU床旁X线检查中具有缩短检查时间,提高拍片一次性成功率,提升图像甲级片率,以及降低患儿所受辐射剂量的优点,对新生儿床旁摄影具有较高的临床应用价值。展开更多
As an effective means for improving system condition and reducing failures, a reasonable preventive maintenance scheduling guarantees the stability and safety of the system. This paper studies a consecutive maintenanc...As an effective means for improving system condition and reducing failures, a reasonable preventive maintenance scheduling guarantees the stability and safety of the system. This paper studies a consecutive maintenance scheduling problem for single-component systems with imperfect maintenance, and an optimum model with minimum reliability constraint for minimal cost rate is developed based on the renewal theory. The agebased and reliability-based maintenance strategies are modeled and compared according to a numerical example based on the degradation data of the actual system, which also verifies the optimality of the reliability-based strategy. At last, the influence of some key parameters is discussed by sensitive analysis.展开更多
文摘目的探讨基于iPad的可视化床旁机在新生儿重症监护室(Neonatal Intensive Care Unit,NICU)床旁X线检查中的应用价值。方法收集我院2019年2月至2020年2月NICU需行床旁X线检查患者100例为研究对象,将患者随机分为对照组和观察组,每组50例。对照组患者采用传统床旁X线机进行拍摄,观察组患者采用可视化床旁X线机进行拍摄,比较两组检查所用时间,拍片一次成功率及拍摄后图像的甲级片率等指标。结果传统床旁X线机拍片所用时间平均值为(5.97±0.16)min,一次性成功率为50%,甲级片率为72%;可视化床旁X线机拍片所用时间平均值为(5.84±0.17)min,一次性成功率为76%,甲级片率为92%。差异均有统计学意义(P<0.05)。结论相比于传统床旁X线机,可视化床旁X线机在NICU床旁X线检查中具有缩短检查时间,提高拍片一次性成功率,提升图像甲级片率,以及降低患儿所受辐射剂量的优点,对新生儿床旁摄影具有较高的临床应用价值。
基金the National Natural Science Foundation of China(Nos.71571015 and 71621001)
文摘As an effective means for improving system condition and reducing failures, a reasonable preventive maintenance scheduling guarantees the stability and safety of the system. This paper studies a consecutive maintenance scheduling problem for single-component systems with imperfect maintenance, and an optimum model with minimum reliability constraint for minimal cost rate is developed based on the renewal theory. The agebased and reliability-based maintenance strategies are modeled and compared according to a numerical example based on the degradation data of the actual system, which also verifies the optimality of the reliability-based strategy. At last, the influence of some key parameters is discussed by sensitive analysis.
