Transcutaneous Pacing

Add transcutaneous pacing as an extension of the manual defibrillation panel. Controller exposes a Pacing mode toggle; when enabled, the controller sets a pacing rate (30-180 bpm) and current output (0-200 mA in 5 mA increments). The monitor displays pacing spikes preceding each captured beat in the ECG waveform. Capture is controller-determined via a Capture toggle. When capturing: rhythm shows wide complexes following each pacing spike at the set rate. When not capturing: pacing spikes appear without consistent QRS response. This teaches the clinically critical distinction between pacer firing and pacer firing AND capturing. Pacing events log to the event log with rate, output, and capture state.