Recovery HR not going down fast enough
I just got a dual lead Medtronic Azure XT DR MRI SureScan implanted (they removed the older single lead PM so that I can have synchronicity between upper and lower chambers.) I have a working SA node but am suffering from a complete heart block because my AV node isn't working right. My PM has been configured so that the SA node drives the AV node.
I went for a 2 mile run for the first time yesterday. The run felt normal but I realized after the run ended when I was cooling down that my HR was not coming down fast enough as it usually does. For example, at the end of the run my HR was 144...and it took about 2 hours for it come down to 90s.
I am an endurance athlete and while I might be a little out of shape, I can emphatically state that there is no way that the SA node is recovering that slowly. This has never happened before even when I had the single lead PM...my HR always came down rapidly within 3 min. It feels like there might be some setting on the PM that is inhibiting the rate to come down...now the confusing thing here is that I realize that the SA node is driving the AV node and so the obvious question is how can this happen (I don't know the answer). I do know that the Apple Watch (which is what I am using to capture the HR) captures the ventricular HR (and not the atrial HR). I don't really know if there is situation here the atrial node is beating at a lower rate and due to some setting the ventricular node is left on its own to recover based on some setting?
ADDED PM SETTINGS BELOW:
ADL Rate = 125 bpm
ADL Response = 4
ADL Setpoint = 5
Exertion Response = 4
UR Setpoint = 76
Activity Acceleration = 15 sec
Rate Adaptive AV = On
Rate Adaptive AV Start Rate = 90 bpm
Rate Adaptive AV Stop Rate = 175 bpm
Min Paced AV = 110 ms
Min Sensed AV = 80 ms