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What do the initials PAC and PVC stand for?
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351246 tn?1379685732
Hi!
PAC stands for premature atrial contraction or complexes. It is a very common form of arrhythmia or irregular heart beat in which premature heart beats originate in the atrial chamber of your heart.  
PVC stands for premature ventricular contraction or complexes. It is another very common form of arrhythmia or irregular heart beat in which premature heart beats originate in the ventricularl chamber of your heart.
In a normal heart, the heart beat originates in the sino-atrial node which is situated between the artial and ventricular chambers of the heart. Take care!
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