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ECG telemetry for pacemaker check-up.

Experience from 1 000 ECG transmissions by telephone for check-up of pacemaker patients is reported. The method and its indications are described. The quality of the ECG is usually good, but sometimes there are unsuccessful transmissions, and the technical problems are discussed. An adequate analysis of cardiac pacing function could always be made. Furthermore, valuable information of different types of arrhythmia was gained on several occasions.