The MyoPacer EP adds cardiac electrophysiology functionality. It was created to give researchers the capability of delivering pre-designed stimulation sequences for obtaining restitution curves and doing arrhythmia and defibrillation studies. It is based on the original MyoPacer and retains all of the original functionality, but adds the ability to generate offbeats, delays, and multiple frequency protocols. The MyoPacer EP is designed around the strategy of creating multi-phase protocols.
Each protocol can have up to 5 phases. A phase can be defined either as a pulse train or a delay. If it is defined as a pulse train, a period or frequency must be selected.
Phases end either after a programmed time / no. of pulses, or when a manual or external TTL trigger is received. The end of a phase will immediately initiate the next phase or, if on the last phase, return to the first phase. As traditional electrophysiological researchers have used the terminology S1, S2… to describe the various phases, the MyoPacer EP will automatically display the appropriate label when looking at a phase.