Definition Paced chamber [O, A, V, D (A+V)] Sensed chamber [O, A, V, D (A+V)] Response to sensed event [O, Inhibited, Triggered, D (I+T)] Rate modulation [O, R] Multisite pacing [O, A, V, D (A+V)] Note that T (Triggered) is only an option for the for 3rd letter of the pacemaker designation and is only […]