Dr. Prystowsky Unknown Tracing Series

This series of unknown tracings is presented in collaboration with Medtronic and offered as an extension of the EP on EP series with Dr. Prystowsky. Each month, a new tracing and multiple-choice question will be posted to test your knowledge.

Unknown Tracings

 

April 2019

QUESTION: The mechanism of tachycardia is most likely:

  1. AVRT
  2. AVNRT
  3. AVNRT with bystander AP
  4. Atrial tachycardia

View Answer

See Previous Tracings

March 2019

QUESTION: The reason for the change in retrograde activation is related to what?

  1. Loss of AP conduction
  2. Loss of LBBB
  3. Concealed conduction in the SP

View Answer

February 2019

QUESTION: In this patient with recurrent syncope and no VT induced, what would you do next?

  1. Implant pacemaker
  2. Give IV procainamide
  3. Implant ILR
  4. Routine follow up

View Answer

January 2019

QUESTION: The mechanism of tachycardia is most likely?

  1. AVRT
  2. AVNRT
  3. Atrial Tachycardia

View Answer

December 2018

QUESTION: What best describes the finding in the figure?

  1. AVNRT is present
  2. An AP is present and participates in tachycardia
  3. An AP is present
  4. More data are needed

View Answer

November 2018

QUESTION: What best describes the finding in the figure?

  1. An AP is part of the tachycardia circuit
  2. A septal/right sided AP is present
  3. A left sided AP is present
  4. An AP is present

View Answer

October 2018

QUESTION: The conduction block is most likely in...

  1. The AV Node
  2. The His bundle
  3. The Infra-His

View Answer

September 2018

QUESTION: What best describes the findings in the figure?

  1. Runs of PVCs
  2. Intermittent preexcitation
  3. Preferential conduction over an AP

View Answer

August 2018

QUESTION: Conduction of the shorter S1S2 interval is most likely due to what?

  1. Equal conduction delay
  2. Supernormal conduction
  3. Gap physiology

View Answer

 

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