Successful percutaneous extraction of a circular mapping catheter entrapped in a Chiari network

Entrapment of a spline from a multielectrode mapping catheter in the side hole of a nonsteerable guiding sheath, with dislodgement and subsequent suction retrieval of a proximal spline electrode

“… 4 Catheter entanglement with other structures has been reported as well, including the vascular system involving the pulmonary veins 5 , 6 and the ostium of the right internal iliac vein, 7 mechanical mitral valves, 8 , 9 or the Chiari network. 10 In the presence of prosthetic heart valves, significant interaction and device embolization has been reported, even with straight, single-shaft catheters. 11 , 12 The risk of entrapment of the PentaRay in the valvular apparatus is felt to be reduced, owing to the linear structure of its splines and its more pliable nature as compared to the Lasso.…”

Coronary sinus spasm with catheter entrapment and adjacent coronary artery compression during an ablation procedure in a child

“…Most case reports involve ablation, circular mapping, or high-density mapping catheters trapped in native or prosthetic mitral valves 1 , 2 or Chiari networks. 3 , 4 Rare cases have been reported of catheters wedged in pulmonary 5 or iliac 6 veins, the tricuspid valve apparatus, 7 and the Thebesian valve. 8 Catheter-to-catheter entanglement has also been described, such as in a side hole of a sheath 9 or in the grid of a mapping catheter.…”