肺栓塞的经典心电图发现具有最小的诊断准确性:一个横截面研究
Marcos Ferranti Smaniotto1, Gabriel Pinheiro Soares Alencar E Silva2, Júlia de Novaes Heringer1
1Cardiology, Instituto Dante Pazzanese de Cardiologia, São Paulo, Brazil.
概括
肺栓塞 (PE) 的心电图 (ECG) 发现的诊断准确性有限. 鼻高心率和下T波变化是最显著的,但单独的心电图不能排除PE的进出.
科学领域:
- 心脏病学 心脏病学
- 诊断成像 诊断成像 诊断成像
- 医疗技术 医疗技术 医学技术
背景情况:
- 肺栓塞 (PE) 诊断依赖于各种方法,心电图 (ECG) 显示了S1Q3T3模式和右心室 (RV) 应变等经典症状.
- 这些心电图发现在当代实践中的诊断实用性仍在争论中.
研究的目的:
- 未来评估"经典"心电图异常的诊断准确性和临床实用性,以检测PE.
- 为了确定在PE诊断的多变量模型中,哪些ECG标准是独立显著的.
主要方法:
- 对273名成年患者进行前性研究,这些患者因怀疑PE而接受计算机断层扫描肺血管造影 (CTPA).
- 盲目的心脏病学家解释了12导电图,评估了预先定义的标准,包括S1Q3T3,RV菌株和T波逆转.
- 计算了诊断准确性 (灵敏度,特异性,概率比率) 和多变量逻辑回归.
主要成果:
- 在多变量模型中,鼻高心率 (OR 1.93) 和下T波逆转/平整 (OR 1.82) 是显著的.
- 自由的RV菌株显示了最高的阳性概率比 (LR+4.75),而S1Q3T3的LR+为2.07.
- 大多数传统的心电图发现缺乏足够的准确性 (95% CI LR+或LR-交叉1).
结论:
- 经典的心电图发现在测试后对PE的概率提供了适度的增加,但缺乏独立的诊断能力.
- 电脑心电图解释不应单独用于裁决PE或PE.
- 需要进一步研究特定的ECG模式在PE诊断中的作用.
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