Inappropriate mode switching?

• by John@PC
• 2015-10-25 01:10:13
• General Posting
• 927 views
• 0 comments

Recently I was switched from DDD(R) to Rythmic (Boston Scientific's reverse-mode-switching algorithm). I had great expectations but unfortunately I've experienced an increase in RV pacing: guessing 2 to 4 times as much as before the switch. Left me scratching my head until I remembered my Boston Scientific tech mention something about a PVC triggering a mode switch. I do have frequent PACs / PVCs from time to time and did a little looking around and found this among several other similar studies:

"Of 21 patients, RMS episodes had occurred in 19 of them, with a mean of 527 episodes per month. Of the 172 RMS episodes available for analysis, 27 (16%) were classified as appropriate and 145 (84%) as inappropriate. Almost all (91%) inappropriate RMS episodes were due to PVC"

Has anyone else with (or without) frequent PVCs experienced an increase in RV pacing using these mode switching algorithms? As for me I'm going to ask to be "reset" on my next EP visit or switch to AAI(R) as I don't have any significant heart block that I now of.

John