12 Lead ECG Trainer Cali Roen, Laura Bagley, Tony Schuler, Amy Weaver Client: Dr. Patricia Padgen, Dept. of Emergency Medical Services Advisor: Prof. Tom Yen, Dept. of Biomedical Engineering BME 400 October 17, 2008

Overview The 12 – Lead ECG: Uses and Electrode Placement Training Mannequin Specifications Existing ECG Training Mannequins Design Alternatives ECG Signal Generator Electrode Placement Feedback Future Work

12 – Lead ECG Diagnose heart arrhythmias More comprehensive view of electrical activity Electrode placement based on anatomical landmarks

Training Mannequin Develop an adult mannequin for 12-lead ECG training Mannequin should produce a variety of ECG signals Students should place ECG electrodes on the chest using anatomical landmarks Provide feedback about correct/incorrect placement

Existing ECG Training Devices Expensive Known electrode placement Not determined by anatomical landmarks Ineffective training for placement

ECG Signal ECG signal generator Conductive mannequin surface 12-lead signal Various arrhythmias Conductive mannequin surface Ag-Ni woven mesh Latex-carbon mix ECG monitor Standard electrodes

Electrode Placement Feedback Design 1 Feedback circuit 12-lead capability Separate placement feedback display Electrode isolation Anatomical landmarks Design 2 LED marked placement 12- and 15-lead capability Anatomical landmarks

Design Matrix Feedback Circuit LED Markers Durability (15) 7 9 Cost (10) 8 Client Preference (25) 10 21 Feasibility (30) 13 24 Ease of Use (20) 15 17 Total 53 79

Future Work Determine an appropriately conductive biomaterial to use for the skin Construct circuit on the chest plate Modify 12 – Lead ECG simulator

References www.laerdal.com www.muskoka.ambulance.ca/g/photos/lifepak12.jpg Harris, James. Electrically Conductive Latex-Based Composites.