case_images: PMC6604116_01
case_images: Table showing detection parameters. Ventricular fibrillation detection was
  set for rates above 222 beats/min, with a counter of 8 out of 12.
case_images: 10.1177_1179547619861096-fig1.jpg
case_images: PMC6604116_01_10.1177_1179547619861096-fig1.jpg
case_images: fig1-1179547619861096
case_images: Detection of ventricular fibrillation was set for a rate above 222 beats/min along with a detection counter of 8 out of 12 (Figure 1).
case_images: Figure showing five channels (from up to down: A/RV marker, LV marker, A EGM,
  RV EGM, and LV EGM).. A indicates atrial; RV, right ventricle; LV, left ventricle; EGM,
  endocavitary electrogram.
case_images: 10.1177_1179547619861096-fig2.jpg
case_images: PMC6604116_01_10.1177_1179547619861096-fig2.jpg
case_images: fig2-1179547619861096
case_images: Markers analysis (Figure 2) showed detection of a very fast (RR interval = 109 ms) ventricular event on the left ventricular (LV) channel with intermittent sensing of the same event on the right ventricular (RV) channel. Electrograms and markers (Figure 2) showed a very high frequency noise on all channels, compatible with an electrical source yielding electromagnetic interference, which was mostly evident on the LV channel.