Catheter tip force required for mechanical perforation of porcine cardiac chambers

  • Shah D
  • Lambert H
  • Langenkamp A
 et al. 
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AIMS: Catheter manipulation during ablation procedures can produce injury and tamponade. We evaluated the mechanical forces required to perforate a porcine heart with an ablation catheter. METHODS AND RESULTS: A 7 Fr, 3.5 mm irrigated radiofrequency (RF) ablation catheter with a force sensor (FS) within its tip was used to create right atrial (RA) free wall lesions in pigs. The intact heart was removed and the FS-equipped catheter was used to mechanically perforate (without RF delivery) the free walls of both atria and ventricles: directly and through an introducer sheath to prevent catheter shaft buckling. Perforation was also performed through epicardially visible RA lesions and adjacent unablated tissue. Twenty-four RA free wall lesions were created in four pigs. One hundred and forty-four mechanical perforations were performed: 44 RA, 30 left atrial (LA), 37 right ventricular (RV), and 33 left ventricular (LV). The RA and RV perforation force (PF) was lower than through the LA and LV (P

Author-supplied keywords

  • Catheter
  • Manipulation
  • Perforation
  • Sheaths

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  • Hendrik Lambert

  • Arne Langenkamp

  • Yuri Vanenkov

  • Giovanni Leo

  • Pascale Gentil-Baron

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