palpitations during exercise
pacemaker since 2007 i notice that sometimes when i do exercise on the gym like threadmill and stairs machine i get this ramdom palpitations should i worry ? this is the first time i have felt them. also im about to see the pacemaker check in 10 days ..what does the settings on my device do thats the part i dont understand for example i heard somehting like 140 so what does that mean that my heart can only go 140? i dont have any other symptons while exercise only the palpitations any ideas ?