Pacemaker Timing Settings • Lower rate limit (50-60 bpm) - The lowest rate at which the device will allow the heart to beat • Maximum tracking rate (a.k.a. upper rate limit) (120-130 bpm) - The fastest rate at which the device will pace the heart • AV Delay (150-200 bpm) - The period of time the pacemaker waits after a sensed or paced atrial depolarization before pacing the ventricle if intrinsic ventricular conduction is not sensed • Post-ventricular atrial refractory period (PVARP) (250-300 bpm) - The period of time after ventricular depolarization during which an atrial impulse sensed by the atrial lead will be ignored for timing cycle purposes. (PVARP is a safety feature: prevents sensing and inappropriate tracking of retrograde P waves which would trigger pacemaker-mediated tachycardia) - Dr. Eric Strong @DrEricStrong - Strong Medicine https://www.youtube.com/c/EricsMedi #Pacemaker #PPM #Timing #Pacing #cardiology #management #settings
