目的以《中国医院质量安全管理第4-8部分:医疗管理医院感染管理》对于结肠手术的影响为例,评估《中国医院质量安全管理》团体标准应用对于外科手术服务质量的影响及其实施效果。方法以医院信息系统为依托,分别提取2018年10月1日-2019年9...目的以《中国医院质量安全管理第4-8部分:医疗管理医院感染管理》对于结肠手术的影响为例,评估《中国医院质量安全管理》团体标准应用对于外科手术服务质量的影响及其实施效果。方法以医院信息系统为依托,分别提取2018年10月1日-2019年9月30日(标准实施前)与2019年10月1日-2020年9月30日(标准实施后)结肠手术患者数据,分析与比较患者年龄、共病等基础特征,并采用间断性时间序列分析(ITSA),评估标准实施对于不良事件、住院时长的影响。结果研究共纳入4442例结肠手术患者,其中标准实施前的患者为2936例,实施后的患者为1506例。单因素分析显示,与标准实施前相比,标准实施后的结肠手术患者共病指数较高(2.25±4.95 vs 3.95±6.14,P<0.0001),恶性肿瘤患病率较高(14.03%vs 26.10%,P<0.0001),平均住院日增加(10.95±8.52 vs 13.29±9.50,P<0.0001),但不良事件发生率并未提高(1.12%vs 0.86%,P=0.4164)。ITSA显示,标准实施后,不良事件发生率与住院时长均无显著增加。结论医院质量安全管理标准的实施可在一定程度上应对患者病情的加重对于临床结局造成的负面影响,保障医疗服务的质量安全。展开更多
Engine noise source identification is essential for making noise reduction strategies.Predominant noise sources of engines are normally identified as some cover components such as oil pan, valve cover and front gear c...Engine noise source identification is essential for making noise reduction strategies.Predominant noise sources of engines are normally identified as some cover components such as oil pan, valve cover and front gear cover etc. The radiated noise sources of a 6-cylinder construction diesel engine are identified with two methods-lead covering technique and surface vibration technique,and the ranking of the major cover on the basis of acoustic power is presented in this paper. Firstly the sound power level of these cover components and their contributions to the total acoustic power are determined with lead covering method under hemi-anechoic condition. Then the vibration characteristics of these components are investigated. The sound power level of various components is predicted via the mean square area average vibration. Both results basically agree well and verify the effectiveness of both techniques in engineering field.展开更多
文摘目的以《中国医院质量安全管理第4-8部分:医疗管理医院感染管理》对于结肠手术的影响为例,评估《中国医院质量安全管理》团体标准应用对于外科手术服务质量的影响及其实施效果。方法以医院信息系统为依托,分别提取2018年10月1日-2019年9月30日(标准实施前)与2019年10月1日-2020年9月30日(标准实施后)结肠手术患者数据,分析与比较患者年龄、共病等基础特征,并采用间断性时间序列分析(ITSA),评估标准实施对于不良事件、住院时长的影响。结果研究共纳入4442例结肠手术患者,其中标准实施前的患者为2936例,实施后的患者为1506例。单因素分析显示,与标准实施前相比,标准实施后的结肠手术患者共病指数较高(2.25±4.95 vs 3.95±6.14,P<0.0001),恶性肿瘤患病率较高(14.03%vs 26.10%,P<0.0001),平均住院日增加(10.95±8.52 vs 13.29±9.50,P<0.0001),但不良事件发生率并未提高(1.12%vs 0.86%,P=0.4164)。ITSA显示,标准实施后,不良事件发生率与住院时长均无显著增加。结论医院质量安全管理标准的实施可在一定程度上应对患者病情的加重对于临床结局造成的负面影响,保障医疗服务的质量安全。
文摘Engine noise source identification is essential for making noise reduction strategies.Predominant noise sources of engines are normally identified as some cover components such as oil pan, valve cover and front gear cover etc. The radiated noise sources of a 6-cylinder construction diesel engine are identified with two methods-lead covering technique and surface vibration technique,and the ranking of the major cover on the basis of acoustic power is presented in this paper. Firstly the sound power level of these cover components and their contributions to the total acoustic power are determined with lead covering method under hemi-anechoic condition. Then the vibration characteristics of these components are investigated. The sound power level of various components is predicted via the mean square area average vibration. Both results basically agree well and verify the effectiveness of both techniques in engineering field.
