Abstract：We selected 4 patients implanted with permanent cardiac pacemakers in different pacing methods. Their ECGs were recorded separately with traditional electrocardiograph and the new GE MAC5 electrocardiograph with an independent pacing channel. Comparative observation reveals that the pacing channel could be used for accurately identifying and labeling pacing signals, providing important references for analyzing pacing ECGs. ECG physicians should pay attention to and make good use of the pacing channel, which could greatly reduce the missed diagnosis and misdiagnosis of pacing ECGs. If the signals of the pacing channel could be successfully converted from the electrocardiograph to ECG network information system, the pacing channel technique would play a greater role in remote ECG diagnosis.
