Anatomy Identification What structures are you able to identify in the following images? What views are displayed? Answer: Lets work on interpretation. The CS electrogram is displayed below. What is observed? ...
What are we doing?? Tachycardia is displayed on the right half of the electrogram, and the differential pacing attempt is on the left. Where do we even begin? Where are we pacing? What type of pacing? Did we capture? What maneuver is being performed?...
What is the rhythm? Answer: This is atrial flutter. Notice the regular atrial rate and that there are more atrial events than ventricular. We can also see that the CS is depolarizing from proximal to distal. Is this typical AFL? How do you know? How can...
How do we determine success? A patient undergoing PVI (pulmonary vein isolation) for paroxysmal atrial fibrillation is in the lab. After completion of the WACA (wide area circumferential ablation), there was remaining signal in the left superior pulmonary vein. The...
What are we looking at? How would you interpret the following electrogram? Is it completely normal, just here to get you thinking? Is there pacing? If so, from which site? Did it capture & conduct? Anything other observations? Answer: In this...
Parahisian Pacing – Quick Review As discussed in the previous post, parahisian pacing is performed by pacing the HIS catheter at high output. A narrower QRS complex is observed with HIS capture, the pacing mA will then be decreased until a wide complex is...