Hi all my question is what can cause your heart to beat 280bpm i have had 8 heart caths with the placing of 1 stent 8 times i have pain in my right groin and i think it is in my arteries. my arteries hurt anywhere you can get a pulse in my chest my neck the tops of my feet my elbows,wrist,armpits. i also have pressure it feels like my head is going to pop off my body the pressure is so bad i can't breath i was told i have copd i have meds but when i have that pressure the inhalers don't even touch it.i use nitro and after 2 or 3 it relieves it i am on alot of meds plavix,cardizem,lovaza,lipitor,tricor,aspirin,nitro. i was told by my gp that they may have damaged a nerve i have had 2 femorl nerve blocks that didn't give me any relief with the last being yesterday the doctor that did this said he didn't think it would help. what do you do when your in severe pain. i have a big knot in my right femoral artery please help me get some ansewers. any input is welcome i greatly apprecaited any respones. Sincerly;Redeena