Key result
Passing multipolar mapping catheters centrally without torque prevents tricuspid valve and papillary muscle rupture.
When using multipolar mapping catheters, operators should pass through the central portion of the valve annulus and avoid applying torque to prevent entrapment and rupture of valve structures.
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Supports heightened caution with mapping catheters during ablation; leaves open optimal techniques pending prospective validation.
When using multipolar mapping catheters for catheter ablation, take care to pass through the central portion when crossing the valve annulus or chordae tendineae, and avoid applying torque as much as possible.
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Daisuke Yamazaki (2026) studied this question. Avoid torque and pass through the central portion of valve annulus or chordae tendineae when using multipolar mapping catheters to prevent tricuspid valve and papillary muscle rupture.
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