Atrial Contractions

Heather m asked:

I experience Paroxysmal Atrial Tachycardia. My heart rate has been over 300 BPM, which only stops when they give me a shot in an IV of adenosine. They say it cannot kill me because it is atrial, and they always send me home the same day. It has happened 5x since I was 19 (I’m pushing 31 now). They suggest a cardiac ablation, which can kill me. Are the docs right? It doesn’t seem possible that a heart can beat that fast for too long with out giving up on you.

Question posted courtesy of: Jesus

themotivatedone asked:

a) chordae tendineae pull them open due to papillary muscle contraction
b) the AV node stimulates them to do so
c) ventricular pressure falls below atrial pressure
d) atrial pressure falls below ventricular pressure

Question posted courtesy of: Denise