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...
What are we doing? A 35-year-old patient is in the EP lab with complaints of palpitations. A two-catheter study is being performed with a decapolar CS and a deflectable quad for the His and RV applications. What test is being performed in the following...
What are we looking at? During catheter placement and throughout the procedure, the electrophysiologist will rotate between two main x-ray angulations. The following image are examples from my case files and are only meant for an introduction to x-ray views....
We have tachycardia… The patient has been determined to have AVNRT and a slow pathway ablation is being performed. This 3D image is in an RAO projection with a cutaway to see the internal aspect of the right atrium. Which of the following would you...
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