case_images: PMC8519712_01
case_images: Mapped morphologies. Templates of mapped morphologies of premature ventricular contractions (upper panels), intraprocedural burden, and corresponding pacemaps (lower panels), 200 mm/sec.
case_images: CRIC2021-9959158.001.jpg
case_images: PMC8519712_01_CRIC2021-9959158.001.jpg
case_images: fig1
case_images: With most PVCs showing a morphology indicating a left ventricular origin (Figure 1), a retrograde left ventricular access via the right femoral artery was established. Even though morphologies 2 and 3 (Figure 1) had a very low burden of 0.57 and 0.58 PVCs per minute, the three-dimensional map was sufficient for correct identification of the PVC origin.
case_images: Activation maps. Simultaneously recorded activation maps of polymorphic premature ventricular contractions with corresponding surface ECG and intracardial signals. Partial maps of the left ventricle showing the aortomitral continuity/basal left ventricle, superior view. Color-coded visualization of local activation time (LAT) with the red area indicating the earliest activation. The overlay shows the approximate location of mitral and aortic valve.
case_images: CRIC2021-9959158.002.jpg
case_images: PMC8519712_01_CRIC2021-9959158.002.jpg
case_images: fig2
case_images: Figure 2). For morphologies 1 and 2, pacemapping was performed and showed a match of 96% (in 12/12 ECG-leads) for both morphologies in their respective area of earliest activation.