heartbeat represented paper cardiac arrhythmias selective focus some beats extra systole ventricular free space write

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Heartbeat represented on paper. Cardiac arrhythmias. Selective focus on some beats. Extra systole ventricular Free space to write Royalty Free Stock Photo
Heartbeat represented on paper. Electrocardiogram of patient with pacemakers with malfunction. Failure of sensing of extra systole Royalty Free Stock Photo
   
   
   
   
   
Heartbeat represented on paper. Cardiac arrhythmias. Selective focus on some beats. Extra systole ventricular Free space to write
   
   
   
   
   
   
   
Electrocardiogram strips with cardiac arrhythmias. Alterations of heartbeats represented on paper. Selective focus on some beats. Free space to write

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