ISC2018:医学卒中急救奖获得者介绍运筹学和数据科学在心血管病中的应用

2018-01-27 国际循环编辑部 国际循环

美国北卡罗莱纳大学荣获ISC 2018医学卒中急救奖在会上发表题为“采用离散事件仿真评估基于严重程度的EMS卒中分类转运流程对患者结局及分流的区域特异性影响”的精彩演讲,并接受了采访。

美国当地时间1月24日,2018年国际卒中大会(International Stroke Conference)在美国加利福尼亚州洛杉矶会议中心隆重开幕。美国北卡罗莱纳大学荣获ISC 2018医学卒中急救奖(Stroke Care in Emergency Medicine Award)在会上发表题为“采用离散事件仿真评估基于严重程度的EMS卒中分类转运流程对患者结局及分流的区域特异性影响(Using Discrete Event Simulation to Assess the Regionally-Specific Impact of the Severity-Based Stroke Triage Algorithm for EMS on Patient Outcomes and Overtriage)”的精彩演讲,并接受了采访。



既往美国北卡罗莱纳大学的Brittany M.Bogle等曾创建了离散事件仿真模型评估了美国心脏协会(AHA)/美国卒中协会(ASA)基于严重程度的EMS卒中分类转运流程的区域特异性影响。近日,在本届ISC大会上,Bogle则展示了其采用离散事件仿真评估的基于严重程度的EMS卒中分类转运流程(图1)对卒中患者结局的区域性影响。



图1. 基于严重程度的EMS卒中分类转运流程

研究者对3416例急诊就诊疑似卒中患者的评估和分析发现,共计1058例存在急性缺血性卒中,约8%(252例)存在大血管闭塞,其中LKW小于6小时者及大于6小时者分别有172例和80例。对于LKW<6小时的患者分析发现,将其转运至非综合性卒中中心(CSC)和CSC急诊评估时LKW分别为186分钟和195分钟,EMS转运所需时间分别为14分钟和21分钟,从就诊到影像学检查所需时间分别为18分钟和29分钟,从进行影像学检查到静脉溶栓所需时间分别为23分钟和12分钟,从LKW到血管内治疗(IA)的平均时间分别为468分钟和349分钟,前者存在明显的转运延误(见图2)。此外,研究发现,转运至非CSC及CSC的患者中接受静脉溶栓治疗的LVO患者比例分别为69%和67%,接受血管内治疗者的比例分别为31%和67%。进一步分析发现,急救流程差异对患者结局的影响似乎并不大(图3)。



图2. LKW小于6小时的患者急救过程用时分布



图3. 急救流程对患者结局的影响

上述结果提示,AHA/ASA新发布的基于严重程度的卒中EMS分类转运流程所带来的过度分类负担可超过其所能给患者带来的获益。因此,未来有必要进一步思索卒中救治系统的关注点,有必要进一步研究确定EMS筛查工具的特异性及敏感性,有必要确定可接受的分类及转运负担并选择采取相应的政策,有必要进一步减少转运延误的情况。

在现场接受采访时,Brittany M.Bogle博士认为,目前,运筹学和数据科学在心血管疾病中的应用并非非常广泛。它正在增长,我认为这是一个巨大需求。我看到的很多东西都是基于EHR(电子健康记录)的记录,并试图建立预测模型。我希望事情能更多地朝着指定的方向发展,我们将努力帮助人们作出更好决定。像数学建模这样的工具可帮助我们做出决定,比如我们可以把移动卒中单元放在哪里,或者我们可以选择什么地方来建立新的综合卒中中心。它仍是一个新兴领域,但我非常兴奋地看到正在不断得到发展。

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    2018-01-29 yankaienglish
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    2018-01-27 wqkm

    ^_^^_^^_^^_^^_^

    0

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    2018-01-27 神功盖世

    0

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