The Porous Endocardial Electrode

AMUNDSON, D.C., McARTHUR, W., AND MOSHARRAFA, M.: The porous endocardial electrode. The permanent endocardial electrode has exhibited the problems of dislodgement, excessive threshold rises and Joss of sensing. These failure modes are addressed with a new electrode incorporating a porous body of Pt‐Ir fibers with a fiber diameter of 20 μm and an overall density of 10%. Porous electrodes have the advantages of utilizing the electrode interior both for tissue ingrowth to improve anchoring and for electrolyte penetration which improves fl wave amplitude and reduces polarization losses.

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