Capture Management
- by Genie
- 2011-04-04 03:04:24
- Checkups & Settings
- 1779 views
- 4 comments
Hi,
I haven't been on the site for quite a while (I had a baby)! But I'm hoping someone out there might know the answer to this: I had my pacemaker interrogation today and was told everything was fine. I am only pacing 1% of the time. But I noticed on the report as I was taking it to the receptionist to go in my file that it said 'Capture Management turned off as always in SR'. Does anyone know why you might turn this feature off? I thought it was an important safety feature (I have a Medtronic Advisa).
I know I should have asked at the time, but the tech walked off before I had a chance to ask him, and I forgot to ask my consultant.
Thanks,
Genie
4 Comments
battery life
by Tracey_E - 2011-04-05 08:04:12
Inga explained it perfectly so I don't have much to add. I use my pm very consistently and predictably, so my rep turned off or turned down a few safety features because it makes the battery last longer. I don't know specifically which features it is but he said they're safety nets for people who are more unpredictable, that I'd never use them anyway so he's not going to waste battery power leaving them turned on.
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Threshold test
by golden_snitch - 2011-04-04 03:04:00
Hi,
no, it's really not a safety feature, it's designed to maximize battery life. Capture management means that the pacer automatically checks the threshold every day, and adjusts the electric output, if necessary. So, in many cases this can save battery life because the pacer can adjust to lower thresholds with a lower output. But if you are pacing only 1% it really does not really need to do this check every day. You are pacing so randomly that your battery will last pretty long. A regular threshold test would, in this case, probably rather shorten battery life than prolong it (it's one more thing the pacer needs to do).
Here is what Medscape says about capture management:
"In clinical practice, pacemakers are manually programmed to an optimized output, maintaining a safety margin that leads to unnecessary current drain. The AutoCapture (AC) algorithm verifies ventricular capture on a beat-to-beat basis, by confirming the evoked response to the pacing stimulus, and automatically adjusts output closely to pacing threshold." http://www.medscape.com/viewarticle/712199_6
Best wishes
Inga