探究基于“-TT”结构经监护仪腹内压监测法降低重症患者喂养不耐受发生率的效果。选取2022年8月—2023年8月四川省自贡市第四人民医院抢救监护室(emergency intensive care unit,EICU)60例重症需行肠内营养(enteral nutrition,EN)支持...探究基于“-TT”结构经监护仪腹内压监测法降低重症患者喂养不耐受发生率的效果。选取2022年8月—2023年8月四川省自贡市第四人民医院抢救监护室(emergency intensive care unit,EICU)60例重症需行肠内营养(enteral nutrition,EN)支持的患者作为研究对象,采用随机数字表法将患者分为参照组和试验组,每组各30例。参照组实施常规EN管理,试验组在参照组基础上实施基于“-TT”结构经监护仪腹内压监测法,对比两组患者的喂养不耐受发生率。结果显示,与参照组相比,试验组喂养不耐受发生率较低(P<0.05);试验组达到目标喂养量时间较短(P<0.05);试验组EICU停留时间较短(P<0.05)。研究发现,于EICU重症需行EN支持患者的管理中,基于“-TT”结构经监护仪腹内压监测法具有一定的临床应用价值,通过对患者腹压变化的实时监测,可以及时调整喂养方案,降低其喂养不耐受发生率,缩短患者达到目标喂养量的时间,改善患者预后,值得借鉴。展开更多
In many real-time resource-constrained embedded systems, highly-predictable system behavior is a key design requirement. The “time-triggered co-operative” (TTC) scheduling algorithm provides a good match for a wide ...In many real-time resource-constrained embedded systems, highly-predictable system behavior is a key design requirement. The “time-triggered co-operative” (TTC) scheduling algorithm provides a good match for a wide range of low-cost embedded applications. As a consequence of the resource, timing, and power constraints, the implementation of such algorithm is often far from trivial. Thus, basic implementation of TTC algorithm can result in excessive levels of task jitter which may jeopardize the predictability of many time-critical applications using this algorithm. This paper discusses the main sources of jitter in earlier TTC implementations and develops two alternative implementations – based on the employment of “sandwich delay” (SD) mechanisms – to reduce task jitter in TTC system significantly. In addition to jitter levels at task release times, we also assess the CPU, memory and power requirements involved in practical implementations of the proposed schedulers. The paper concludes that the TTC scheduler implementation using “multiple timer interrupt” (MTI) technique achieves better performance in terms of timing behavior and resource utilization as opposed to the other implementation which is based on a simple SD mechanism. Use of MTI technique is also found to provide a simple solution to “task overrun” problem which may degrade the performance of many TTC systems.展开更多
文摘探究基于“-TT”结构经监护仪腹内压监测法降低重症患者喂养不耐受发生率的效果。选取2022年8月—2023年8月四川省自贡市第四人民医院抢救监护室(emergency intensive care unit,EICU)60例重症需行肠内营养(enteral nutrition,EN)支持的患者作为研究对象,采用随机数字表法将患者分为参照组和试验组,每组各30例。参照组实施常规EN管理,试验组在参照组基础上实施基于“-TT”结构经监护仪腹内压监测法,对比两组患者的喂养不耐受发生率。结果显示,与参照组相比,试验组喂养不耐受发生率较低(P<0.05);试验组达到目标喂养量时间较短(P<0.05);试验组EICU停留时间较短(P<0.05)。研究发现,于EICU重症需行EN支持患者的管理中,基于“-TT”结构经监护仪腹内压监测法具有一定的临床应用价值,通过对患者腹压变化的实时监测,可以及时调整喂养方案,降低其喂养不耐受发生率,缩短患者达到目标喂养量的时间,改善患者预后,值得借鉴。
文摘In many real-time resource-constrained embedded systems, highly-predictable system behavior is a key design requirement. The “time-triggered co-operative” (TTC) scheduling algorithm provides a good match for a wide range of low-cost embedded applications. As a consequence of the resource, timing, and power constraints, the implementation of such algorithm is often far from trivial. Thus, basic implementation of TTC algorithm can result in excessive levels of task jitter which may jeopardize the predictability of many time-critical applications using this algorithm. This paper discusses the main sources of jitter in earlier TTC implementations and develops two alternative implementations – based on the employment of “sandwich delay” (SD) mechanisms – to reduce task jitter in TTC system significantly. In addition to jitter levels at task release times, we also assess the CPU, memory and power requirements involved in practical implementations of the proposed schedulers. The paper concludes that the TTC scheduler implementation using “multiple timer interrupt” (MTI) technique achieves better performance in terms of timing behavior and resource utilization as opposed to the other implementation which is based on a simple SD mechanism. Use of MTI technique is also found to provide a simple solution to “task overrun” problem which may degrade the performance of many TTC systems.
