Highlights a specific mechanical complication (catheter entrapment in the mitral valve apparatus) associated with using a peanut-shaped tip valve mapping catheter during retrograde ablation of left free-wall pathways in WPW syndrome.
Catheter entrapment risk warrants procedural caution with peanut-shaped mapping catheters in retrograde WPW ablation; this case leaves open true incidence and prevention strategies.
Catheter ablation of accessory atrioventricular pathways in patients with Wolff-Parkinson-White syndrome has become an increasingly popular therapeutic option. Catheter technology is rapidly evolving, allowing physicians to tailor the choice of catheter to the location of the pathway. We describe catheter entrapment in the mitral valve apparatus while using a valve mapping catheter with a peanut shaped tip to approach a left free-wall pathway retrogradely across the aortic valve.
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Conti et al. (1994) studied this question.
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