We present an artefactual ECG created by a digital ECG-recording machine, caused by deletion of the first 80 ms of the QRS complex immediately following the pacing spike in a patient with complete atrio-ventricular block, biventricular pacing and chronic atrial fibrillation. The artefact was mistaken for inferior ST elevation myocardial infarction and the patient underwent unnecessary urgent coronary angiogram. We are not aware of this particular artefact pattern being previously reported in the literature.

中文翻译：

---

ST 段抬高型心肌梗死与否——这是个问题

我们展示了由数字心电图记录机创建的人为心电图，该心电图是由完全房室传导阻滞、双心室起搏和慢性心房颤动的患者在起搏尖峰后立即删除 QRS 复合波的前 80 毫秒引起的。该伪影被误认为是下ST段抬高心肌梗死，患者接受了不必要的紧急冠状动脉造影。我们不知道以前在文献中报道过这种特殊的人工制品模式。