HRCR December 2021 Quiz

Editorial note: The following quiz is related to the article “Radiofrequency ablation data associated with atrioesophageal fistula, by David R. Tomlinson and John Mandrola in the December 2021 issue of Heart Rhythm Case Reports.

Question 1: Assuming a positionally stable catheter with constant tissue contact, which of the following represents the best indicator of tissue injury in response to radiofrequency energy delivery?

a. Force time integral (FTI)
b. Mean contact force
c. Impedance drop
d. Ablation index (AI)
e. Lesion size index (LSI)

Question 2: From the two recently conducted randomized controlled trials of RF AF ablation (AMICA and CIRCA DOSE), approximately what proportion of procedures were complicated by atrio-esophageal fistula (AEF)?

a. 1:1000
b. 1:500
c. 1:200
d. 1:100
e. 0

Question 3: Which of the following statements is true regarding the tissue effects of RF delivery during AF ablation?

a. At any given power, tissue effects of RF delivery are uniform.
b. At any given power, RF effect is significantly greater at right versus left-sided LA posterior wall sites.
c. At any given power, RF effect is significantly greater at left versus right-sided LA posterior wall sites.
d. At any given power, RF effect is inconsistent and unrelated to any particular intracardiac site.