What should you confirm during TCP regarding the pacing electrodes?

Confirming the sensing of the QRS complex in demand mode is critical during Transcutaneous Pacing (TCP) because it ensures that the pacemaker is effectively detecting the heart's own electrical activity. The demand mode allows the pacemaker to assist the heart only when it fails to generate its own rhythm, which means it should be able to sense when the QRS complex occurs. This capability indicates that the pacing system is functioning correctly, providing the necessary support only when the patient's heart is not adequately performing its pumping function.

This process helps to prevent unnecessary pacing when the heart is able to beat on its own while ensuring that the pacing will still be delivered when the heart's activity is insufficient. Proper sensing reduces potential complications and optimizes patient comfort by minimizing the adverse effects associated with continuous pacing.