The 3 Fates of a Premature Atrial Complex

 • PAC can be conducted with normal QRS duration.

 • PAC can be conducted with aberrancy

    - A PAC that conducts through the AV node but finds the right bundle branch refractory will conduct with a RBBB morphology (conducted with aberrancy).

 • PAC can be blocked or non-conducted

    - A PAC that falls during the absolute refractory period of the AV node will not conduct (non- conducted PAC).



#PACs #cardiology #diagnosis #ekg #ecg #electrocardiogram #premature #atrial #complexes