A system for facilitating resuscitation, comprising: a resuscitation assembly comprising: a first electrode assembly comprising a therapy side and a first motion sensor, the first electrode assembly being configured to be positioned anteriorly to a patient, a second electrode assembly comprising a therapy side and a second motion sensor, the second electrode assembly being configured to be positioned posteriorly to the patient, and processing circuitry operatively connected to the resuscitation assembly and configured to receive and process signals to estimate at least one of a compression depth and rate during administration of chest compressions, and receive and process ECG signals and deliver electrotherapy; an output device for providing one or more chest compression parameters including at least one of the estimated compression depth and the estimated compression rate for a user, wherein the processing circuitry is further configured to identify the resuscitation assembly as one of a pediatric or adult resuscitation assembly based on an identification signal, the output device is configured to adjust presentation of the one or more chest compression parameters based on whether the resuscitation assembly is identified as pediatric or adult; characterized in that the processing circuitry is configured to receive and process the ECG signals from the first and second electrode assemblies (1A, 1B) and to deliver the electrotherapy through the first and second electrode assemblies (1A, 1B); the processing circuitry is configured to receive and process the signals from at least one of the first and second motion sensors, wherein the estimated chest compression depth is calculated by calculating a difference between a distance traveled by the second motion sensor and a distance traveled by the first motion sensor. a resuscitation assembly comprising: a first electrode assembly comprising a therapy side and a first motion sensor, the first electrode assembly being configured to be positioned anteriorly to a patient, a second electrode assembly comprising a therapy side and a second motion sensor, the second electrode assembly being configured to be positioned posteriorly to the patient, and a first electrode assembly comprising a therapy side and a first motion sensor, the first electrode assembly being configured to be positioned anteriorly to a patient, a second electrode assembly comprising a therapy side and a second motion sensor, the second electrode assembly being configured to be positioned posteriorly to the patient, and processing circuitry operatively connected to the resuscitation assembly and configured to receive and process signals to estimate at least one of a compression depth and rate during administration of chest compressions, and receive and process ECG signals and deliver electrotherapy; receive and process signals to estimate at least one of a compression depth and rate during administration of chest compressions, and receive and process ECG signals and deliver electrotherapy; an output device for providing one or more chest compression parameters including at least one of the estimated compression depth and the estimated compression rate for a user, wherein the processing circuitry is further configured to identify the resuscitation assembly as one of a pediatric or adult resuscitation assembly based on an identification signal, the output device is configured to adjust presentation of the one or more chest compression parameters based on whether the resuscitation assembly is identified as pediatric or adult; characterized in that the processing circuitry is configured to receive and process the ECG signals from the first and second electrode assemblies (1A, 1B) and to deliver the electrotherapy through the first and second electrode assemblies (1A, 1B); the processing circuitry is configured to receive and process the signals from at least one of the first and second motion sensors, wherein the estimated chest compression depth is calculated by calculating a difference between a distance traveled by the second motion sensor and a distance traveled by the first motion sensor.