Patel Santosh I, Souter Michael J
Department of Anesthesia, Royal Lancaster Infirmary, Lancaster, United Kingdom.
Anesthesiology. 2008 Jan;108(1):138-48. doi: 10.1097/01.anes.0000296537.62905.25.
Interference of the monitored or recorded electrocardiogram is common within operating room and intensive care unit environments. Artifactual signals, which corrupt the normal cardiac signal, may arise from internal or external sources. Electrical devices used in the clinical setting can induce artifacts by various different mechanisms. Newer diagnostic and therapeutic modalities may generate artifactual changes. These artifacts may be nonspecific or may resemble serious arrhythmia. Clinical signs, along with monitored waveforms from other simultaneously monitored parameters, may provide the clues to differentiate artifacts from true changes on the electrocardiogram. Simple measures, such as proper attention to basic principles of electrocardiographic measurement, can eliminate some artifacts. However, in persistent cases, expert help may be required to identify the precise source and minimize interference on the electrocardiogram. Technological advancements in processing the electrocardiographic signal may be useful to detect and eliminate artifacts. Ultimately, an improved understanding of the artifacts generated by equipment, and their identifying characteristics, is important to avoid misinterpretation, misdiagnosis, and iatrogenic complication.
在手术室和重症监护病房环境中，监测或记录的心电图受到干扰很常见。干扰正常心脏信号的伪差信号可能源于内部或外部来源。临床环境中使用的电气设备可通过各种不同机制诱发伪差。更新的诊断和治疗方式可能会产生伪差变化。这些伪差可能是非特异性的，也可能类似于严重心律失常。临床体征以及来自其他同时监测参数的监测波形，可能为区分心电图上的伪差与真实变化提供线索。一些简单措施，如适当关注心电图测量的基本原则，可消除一些伪差。然而，对于持续存在的情况，可能需要专家帮助来确定确切来源并将对心电图的干扰降至最低。心电图信号处理方面的技术进步可能有助于检测和消除伪差。最终，更好地了解设备产生的伪差及其识别特征，对于避免错误解读、误诊和医源性并发症很重要。
