Circulation:1小时高灵敏度肌钙蛋白检测对疑似急性冠状动脉综合征患者长期预后的影响

2021-07-20 MedSci原创 MedSci原创

0/1小时hs-cTnT方案方案实施相关的实践变化可能与新发现的肌钙蛋白升高患者的死亡和心肌梗塞率增加有关

高灵敏度肌钙蛋白检测越来越多地被用来加快对疑似急性冠状动脉综合征患者的评估。但很少有研究直接比较这些检测在低浓度下的增强性能是否会改变医疗措施,从而改善患者的长期预后。本研究评估了在非掩0/1小时高敏心肌肌钙蛋白T (hs-cTnT) 方案与0/3小时掩蔽hs-cTnT 方案下管理的疑似急性冠状动脉综合征患者的晚期结果。

这是一项多中心、前瞻性、患者水平的随机对比研究,疑似急性冠状动脉综合征但无冠脉缺血心电图证据的患者随机接受0/1小时hs-cTnT方案(<5 ng/L)或标准0/3小时hs-cTnT检测方案(≤29 ng/L)指导的治疗,并随访12个月。主要终点是全因死亡或心肌梗死的时间。

2015年8月-2019年4月期间,共招募了3378位患者,其中108位撤出研究,3270位受试者的随访满12个月(0/1小时组:1638位;0/3小时组:1632位)。在3270位完成随访计划的受试者中,有2993位(91.5%)的初始肌钙蛋白浓度≤29 ng/L。0/1小时hs-cTnT方案与受试者心功能检测的次数减少有关

12 个月时的主要结果和 CV再住院情况

随访12个月后,两组有创性冠状动脉造影的比例没有差异(0/1小时组 vs 0/3小时组:14.2% vs 12.4%;p=0.13)。12个月时,两组间的全因死亡率和心肌梗死率均无显著差异(5.0% vs 3.8%;HR 1.32 [95%CI 0.95-1.83], p=0.10)。

在初始肌钙蛋白浓度≤29 ng/L的受试者中,未掩hs-cTnT报告与死亡或心肌梗死率增加有关(0/1小时 vs 0/3小时:3.7% vs 2.3%;HR 1.60 [95%CI 1.05-2.46]; p=0.030)。

综上所述,0/1小时hs-cTnT方案的未掩hs-cTnT报告并未减少随访12个月内的缺血性事件,但与0/1小时hs-cTnT方案方案实施相关的实践变化可能与新发现的肌钙蛋白升高患者的死亡和心肌梗塞率增加有关。

原始出处:

Kristina Lambrakis, et al. Late Outcomes of the RAPID-TnT Randomized Controlled Trial: 0/1-Hour High-Sensitivity Troponin T Protocol in Suspected ACS. Circulation. 2021;144:113–125. https://doi.org/10.1161/CIRCULATIONAHA.121.055009

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