Atrial Premature Complexes: Difference between revisions

m
no edit summary
mNo edit summary
mNo edit summary
Line 8: Line 8:
# Normally conducted
# Normally conducted
# Conducted with aberrancy. Mostly right bundle branch block aberrancy as the RBBB has a longer refractory period.
# Conducted with aberrancy. Mostly right bundle branch block aberrancy as the RBBB has a longer refractory period.
# Non-conducted. If the premature beat is very early, the AV node is refractory (cannot conduct) and the beat is not followed by a QRS complex.
# Non-conducted. If the premature beat is very early, the AV node is refractory (cannot conduct) and the beat is not followed by a QRS complex. A non-conducted premature atrial beat is often confused with type II second degree AV block where a normal sinus beat is not followed by a QRS complex.


A premature atrial complex is usually followed by a [[Ectopic Beats|noncompensatory pause]] caused by the fact that atrial depolarization enters the sinus node and resets the sinus rhythm.
A premature atrial complex is usually followed by a [[Ectopic Beats|noncompensatory pause]] caused by the fact that atrial depolarization enters the sinus node and resets the sinus rhythm.