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European Radiology:功能CAD-RADS在冠状动脉疾病患者治疗和预后中的价值

2022-06-10 shaosai MedSci原创

冠状动脉CT血管造影(CCTA)是对稳定期胸痛和疑似冠状动脉疾病(CAD)患者进行诊断和治疗计划的一种有效的无创性检查。

冠状动脉CT血管造影(CCTA)是对稳定期胸痛和疑似冠状动脉疾病(CAD)患者进行诊断和治疗计划的一种有效的无创性检查。为了最大限度地发挥CCTA的临床作用,标准化的冠状动脉疾病报告和数据系统(CAD-RADS)的提出有助于临床医生理解成像报告的含义和下一步应该做什么意义重大。然而,CCTA的阳性预测值相对较低,部分病变可能被高估,狭窄程度与下游心肌缺血的相关性较差。因此,解剖学上的CAD-RADS的效用十分有限

CCTA衍生的分数流量储备(FFRCT)是一种无创的影像学检查技术,可以评估整个冠状动脉狭窄的流限制,具有较高的诊断准确性,与有创FFR有良好的相关性,因此对临床决策和预后有很大影响。因此将这一信息整合到解剖学CAD-RADS报告系统中可进一步优化风险分层,并能更好地利用来自解剖学CAD-RADS的信息。然而,到目前为止,很少有研究尝试将解剖学CAD-RADS与FFRCT相结合来指导治疗策略。

近日,发表在European Radiology杂志的一项研究提出了一个新的基于FFRCT的功能性CAD-RADS,并在一个回顾性队列中评估新型功能性CAD-RADS在指导治疗方面的表现,同时与单纯的解剖学CAD-RADS相比,验证功能性CAD-RADS在预测不良预后方面的能力。

本研究提出了一个新的功能性CAD-RADS,并在一个回顾性的多中心队列中评估了功能性CAD-RADS在指导治疗方案指导方面的表现,以实际的临床治疗为参考标准,对所有患者进行CCTA和有创FFR(n = 466)。计算了功能性CAD-RADS相对于解剖性CAD-RADS的净分类改进(NRI)。其次,计算了功能性CAD-RADS在前瞻性双臂队列中的预后价值(566[FFRCT组]与567[CCTA组]),经过1年的随访,用Cox危险比例模型比较了FFRCT组(n = 513)和CCTA组(n = 511)的功能性CAD-RADS以确定有不良预后风险的患者。 

功能性CAD-RADS在指导治疗决策方面表现出优于解剖性CAD-RADS(AUC:0.828 vs. 0.681,p < 0.001),与FFR(AUC:0.828 vs. 0.848,p = 0.253)性能相当。30.0%的患者(n = 140)因功能性CAD-RADS而修改了由解剖学CAD-RADS确定的管理计划(NRI = 0.369,p < 0.001)。功能性CAD-RADS是1年疗效的独立预测因素,一致性指数为0.795,解剖性CAD-RADS的相应数值为0.751。 


图 基于功能性CAD-RADS和解剖学CAD-RADS预后的Kaplan-Meier曲线。功能性CAD-RADS(a)和解剖学CAD-RADS(b)预测的1年累积事件率在功能性CAD-RADS和解剖学CAD-RADS层中有明显差异(均为对数rank p < 0.001)

本研究首次提出了新的功能性CAD-RADS类别,并评估了其在治疗决策中的价值以及预测患者预后中的作用。本研究表明,功能性CAD-RADS所建议的下游患者管理可在临床实践中产生积极的影响,同时对未来风险的分层也有很强大的能力。

 

原文出处:

Chun Xiang Tang,Hong Yan Qiao,Xiao Lei Zhang,et al.Functional CAD-RADS using FFR CT on therapeutic management and prognosis in patients with coronary artery disease.DOI:10.1007/s00330-022-08618-5

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