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).
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