Catheter ablation of premature ventricular contractions originating from kissing papillary muscles

Very thick left ventricular papillary muscles (PAMs) may kiss each other and premature ventricular contractions (PVCs) can originate from the sides of the PAMs facing each other. In such a setting, mapping of those PVCs is confusing and rendering catheter ablation challenging.

Automated summary

When the left ventricular papillary muscles are very thick, premature ventricular contractions (PVCs) may arise from the sides of the papillary muscles facing each other, making mapping and catheter ablation challenging.