The utility of fragmented QRS in association with strain echocardiography in predicting significant coronary artery stenosis.

IF 1.2 Q3 CARDIAC & CARDIOVASCULAR SYSTEMS

Journal of Cardiovascular and Thoracic Research Pub Date : 2024-01-01 Epub Date: 2024-12-23 DOI:10.34172/jcvtr.33253

Seyed Abdolhossein Tabatabaei, Elham Omrani, Atoosa Mostafavi, Hakimeh Sadeghian, Ali Abbasi

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Abstract

Introduction: Fragmented QRS (fQRS) on a 12-lead ECG indicates electrical conduction disruption due to various cardiac issues, including coronary artery disease (CAD). This study investigated whether combining fQRS and reduced myocardial strain could predict significant CAD.

Methods: We conducted a cross-sectional study on patients with fQRS on surface ECG who underwent coronary angiography. The left ventricular strain was assessed using 2D speckle-tracking echocardiography.

Results: We enrolled 55 patients with fQRS and significant CAD (≥70% coronary artery stenosis) and 55 control patients (≤30% stenosis). The strain was significantly reduced in segments with fQRS and significant CAD compared with the control group.

Conclusion: In patients with CAD, the combination of fQRS in any ECG lead and reduced strain can predict the presence and location of a coronary artery with greater than 70% stenosis.

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碎片化QRS与应变超声心动图在预测显著冠状动脉狭窄中的应用。

导读：12导联心电图上的碎片化QRS （fQRS）表明由于各种心脏问题（包括冠状动脉疾病（CAD））导致的电传导中断。本研究探讨fQRS和心肌应变降低是否能预测冠心病的显著性。方法：对行冠状动脉造影的体表心电图fQRS患者进行横断面研究。采用二维斑点跟踪超声心动图评估左心室应变。结果：我们纳入了55例fQRS合并明显冠心病（冠状动脉狭窄≥70%）的患者和55例对照组（冠状动脉狭窄≤30%）。与对照组相比，具有fQRS和显著CAD的节段菌株显著减少。结论：在冠心病患者中，任意导联fQRS结合应变降低可预测冠脉狭窄大于70%的存在及位置。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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