(FIT)-Module 5 Workshop 9: Arrhythmia Case Studies (Putting It All Together for the Boards)-Miller Case 5 Answer

Video Transcription

Video Summary

The rhythm strip indicates dissociated A-waves, suggesting a possible atrioventricular nodal re-entrant tachycardia (AVNRT), though this seems unlikely due to the presence of varying QRS complexes. The conduction system is behaving atypically, suggesting the rhythm may originate lower in the system, possibly as a focal activity from the left anterior fascicle. This is supported by the presence of retrograde HIS potentials, indicating this is not caused by standard junctional activity or re-entry within the left His-Purkinje system, as evidenced by the narrow QRS complexes observed.

Keywords

dissociated A-waves

atrioventricular nodal re-entrant tachycardia

varying QRS complexes

left anterior fascicle focal activity

retrograde HIS potentials