Caption of Fig 3: Grey wire is a
soft tip catheter; green wire is a
traditional catheter used in this study. A, non-medal soft sphericity
tip. B, 10 cm flexible distal part. Compare with current most used TVCP
catheter, the grey catheter proximal part stiff as the same, while
distal part more flexible.
While TPPM must operate under fluoroscope by a cardiologist with
sufficient operator skills, which may not be available in an emergency
or other reason, the TVCP catheter
in this study has a smooth and stiff metal tip
(the distal electrode). A soft tip
design of TVCP catheter (Grey wire in Fig 3): proximal catheter as rigid
as traditional TVCP catheter to keep operability, while soft sphericity
tip and more flexible distal lead would prevent the catheter from
penetrating the right ventricular wall which may cause pericardial
tamponade, and lighten mechanical cardiac injury.