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在机械循环支持人群中,对肝素诱导的血小板缺血进行修改的4Ts评分
Terrence Pong1, Kevin Cyr1, Joy Aparicio-Valenzuela1
1Department of Cardiothoracic Surgery, School of Medicine, Stanford University, Stanford, Stanford, CA.
Journal of cardiothoracic and vascular anesthesia
|July 5, 2023
概括
一个修改后的评分系统,4TMCS,改善了在那些有机械循环支持 (MCS) 患者中,对氨酸诱导的血小板缩 (HIT) 风险的患者的识别. 这种工具有助于在这个脆弱人群中更早地诊断和更好地管理HIT.
科学领域:
- 心脏病学 心脏病学
- 血液学 血液学 血液学
- 关键护理医学 关键护理医学
背景情况:
- 肝素诱导的血小板缺血 (HIT) 是一种严重的并发症,与显著的发病率和死亡率有关,特别是在机械循环支持 (MCS) 患者中.
- 准确识别有HIT风险的患者对于及时干预和改善结果至关重要.
- 现有的评分系统可能无法完全捕捉与MCS设备相关的特定风险.
研究的目的:
- 为了确定MCS患者中HIT的风险因素.
- 开发和验证一个修改后的评分系统 (4TMCS) 用于预测MCS人口中的HIT.
- 为了比较新的4TMCS得分与传统的4Ts得分的诊断准确性.
主要方法:
- 一项回顾性队列研究,涉及5314名接受心脏手术的患者.
- 根据血小板计数和HIT测试结果对患者进行分类.
- 4T和修改后的4TMCS得分的诊断准确性使用接受器运营商曲线 (AUC) 下面的区域分析来评估.
主要成果:
- 在MCS患者中,HIT的发生率为5.9%,而在没有MCS患者中为1.9% (p < 0.001).
- 4TMCS得分与4Ts得分 (AUC = 0.77,p < 0.044) 相比,显示出更高的诊断准确性 (AUC = 0.83),而不是4T (AUC = 0.77,p < 0.044).
- 4TMCS得分表现出比4Ts得分 (85.7%) 的更高的灵敏度 (95.2%),截止值为≥4.4.
结论:
- 在MCS人群中,HIT与明显更糟糕的结果有关,包括增加住院死亡率.
- 修改后的4TMCS评分系统为在MCS队列中识别有HIT风险的患者提供了更高的准确性.
- 实施4TMCS评分可以促进早期查和更有效地管理机械循环支持患者的HIT.
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