a first lead for cardiac stimulation;

one or more sensors for provision of sensor data; and

a processing device comprising a processor, a communication interface and a lead interface,

wherein the processor is configured to:

obtain sensor data from the one or more sensors;

determine a first set of first parameters based on the sensor data, the first set including a first primary parameter based on current sensor data and a first secondary parameter based on sensor data earlier than the current sensor data;

determine a second set of second parameters based on the sensor data, the second parameters being different from the first parameters, the second set including a second primary parameter based on current sensor data and a second secondary parameter based on sensor data earlier than the current sensor data;

determine, based on a model, a first cardiac event parameter indicative of a probability of a future cardiac event and indicative of a probability of a first cardiac event occurring within a first time period of 15 minutes to 1 week from determining the first cardiac event parameter, wherein the first cardiac event parameter is based on one or more first parameters of the first set and one or more second parameters of the second set;

determine if one or more transmission criteria are satisfied; and

in accordance with a first transmission criterion being satisfied, transmit a first warning signal to an accessory device, the first warning signal being indicative of the first cardiac event parameter.