A premature atrial contraction (PAC) occurs when a focus in the atrium (not the SA node), generates an action potential before the next scheduled SA node action potential. There are four main ...

These algorithms target modification of atrial substrate and suppress AF triggers, including premature atrial contractions (PACs), believed to be a primary inducer of AF. Using data from dual ...

There are four main characteristics of PACs: Premature, occurring earlier than expected if measured against previous P-P intervals. Ectopic, originating outside of the SA node, and thus ...