8-1 
8 Monitoring ECG 
 
 
8.1 Introduction 
The electrocardiogram (ECG) measures the electrical activity of the heart and displays it on 
the patient monitor as a waveform and a numeric. For uMEC10, ECG monitoring provides 3-, 
5-lead ECG monitoring, ST-segment analysis and arrhythmia analysis. For uMEC12 and 
uMEC15, ECG monitoring provides 3-, 5- and 12-lead ECG monitoring, ST-segment 
analysis and arrhythmia analysis. 
 
 
8.2 Safety 
 WARNING 
z  Use only ECG electrodes and cables specified by the manufacturer. 
z  Make sure the conductive parts of electrodes and associated connectors for applied 
parts, including the neutral electrode, should not contact any other conductive 
parts including earth. 
z  Periodically inspect the electrode application site to ensure skin quality. If the skin 
quality changes, replace the electrodes or change the application site. 
z  Use defibrillation-proof ECG cables during defibrillation. 
z  Do not touch the patient, or table, or instruments during defibrillation. 
z  This equipment is not suitable for direct cardiac application. 
z  To reduce the hazard of burns during high-frequency surgical procedure, ensure 
that the monitor’s cables and transducers never come into contact with the 
electro-surgery unit (ESU). 
z  The neutral electrode of the electro-surgery unit (ESU) shall properly contact the 
patient. Otherwise, burns may result. 
 
 
 CAUTION 
z  Interference from a non-grounded instrument near the patient and electrosurgery 
interference can cause problems with the waveform.