Earthing defect: A cause for unstable hemodynamics

Abstract

Interference of monitored electrocardiogram (ECG) is a common event in intensive care units and operation theaters. Artifacts in the ECG tracing can resemble serious arrhythmia, thus leading to unnecessary usage of antiarrhythmics or electrical defibrillation. In addition, ECG artifacts may lead to serious hemodynamic consequences secondary to intra-aortic balloon pump (IABP) trigger failure. We report a rare event of IABP failure due to ECG artifact, which appeared on placement of the transthoracic echocardiography probe over the chest. Subsequent evaluation revealed potential current leakage from echocardiography machine secondary to earthing defect in the machine.

Ultrasound-guided probe-generated artifacts stimulating ventricular tachycardia: A rare phenomenon

“…[ 1 ] A related case described ECG artifact on placement of transthoracic echocardiographic probe over the chest due to earthing defect. [ 2 ]…”

ECG Changes during Radiofrequency Ablation of Liver Metastasis under General Anaesthesia - A Dilemma with Cardiac Event

“…At times inappropriate earthing or current leakage from the electrical gadgets used during surgery may also interfere with ECG recordings. 8 It is prudent to keep the earthing away from the ECG monitoring sites. Also, the loop of current flow of the electrical gadget probe and its grounded electrode should not cross the heart or the ECG leads.…”

Electrocardiogram Interference: A Thing of the Past?

“…ECG interference is common throughout hospitals, particularly during cardiac surgery. [7][8][9][10][11][12][13][14][15][16] The authors have observed baseline wander and electrostatic discharge when healthcare providers move hands and torsos in proximity to the patient, tap their feet on the floor, or touch the patient's bed. Such interference can trigger false positive dysrhythmia alarms, signaling ventricular tachycardia and premature ventricular contractions.…”