Telemetry is an observation tool that allows continuous ECG, RR, SpO2 monitoring while the patient remains active without the restriction of being attached to a bedside cardiac monitor. The patient group requiring telemetry are children diagnosed with a known/unknown arrhythmia, children at risk of an arrhythmia, or children anticipated to be at risk of sudden cardiac deterioration. Telemetry is not a replacement for patient visualisation and assessment.