Pacemaker changes ?
Good morning all ! i had an MRI yesterday on my foot, an issue I've been dealing with for 20+ years. The Medtronic rep came to put my pm into " safe " mode. I told him and the MRI tech that I guess I was anxious -rapid heart rate - not with the MRI- but with anything pertaining to the PM. The rep made his adjustments and they took me in to get the MRI. I was getting hooked with etc. when the rep asked how long my procedure would take and he was told about an hour and 15 minutes. On hearing this, he asked them to bring me back out and he said he put on " scan." On my PM. He said he didn't want my intrinsic heart beating that hard for an hour and 15 minutes. My heart rate finally slowed and eventually The MRI finally was completed, He told me he was resetting everything as it was and I asked him for a print copy. Last device check in late January, here's what a few of my setting were...
impedance Atrial 494; now it's 551. Ventricular lead was 437, now 456
Capture Threshold in January Atrial, 0.625V @.40ms. In ventricle, 0.25v@.40ms
March 26 setting: 0.875@.40ms Atrial and 1.250 V@.40ms In the ventricle.
Amplitude/ Pulse width in January 150 V/.40ms Ventricle 2.25V@.40ms
March 26, 1.75V@.40ms. Ventricle 2.50 V@.40ms
sensitivity was unchanged : atrial .30 mv and ventricle .90 mv
Pacing percentages weren't listed on the sheet.
I'd appreciate any thoughts any of you who understand more of this than I do !
I have a dual chamber PM with intermittent 2 nd and 3rd degree Heart block. I feel great and been doing well since I got my PM in 2020.