DATA AVAILABILITY STATEMENT
The data that support the findings of this study are available on request from the corresponding author.
Figure Legends:
Figure 1. The PVC morphology and its target. A. The 12 leads ECG showed the PVC morphology, which indicated its origin of left ventricular anterior papillary muscle. B. The earliest activation site of the PVC was located at the left ventricular anterior papillary muscle (31ms ahead the surface QRS wave).
Figure 2 . The last retrograde transaortic manipulation. After several attempts, the mapping catheter was finally introduced into the left ventricle. Noted that the excessive contact force was encountered during the retrograde transaortic manipulation (A-D).
Figure 3. The cervical computed tomography angiography. Noted that the anomaly left vertebral artery is directly originated from the aortic arch (red arrow).
Figure 4. Acute left cerebellar infarction. Cranial magnetic resonance imaging (T1W1, T1W2 and DWI) confirmed acute left cerebellar infarction.
supplementary video. The excessive contact force and the retrograde transaortic manipulation. After several attempts, the mapping catheter was finally introduced into the left ventricle. The excessive contact force was encountered during the retrograde transaortic manipulation from 12 seconds to 16 seconds of the video.