Method and apparatus for using a cardiac stimulating, sensing and guidewire combination
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United States of America Patent
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Issued Date -
Feb 5, 2004
app pub date -
Nov 7, 2002
filing date -
Jul 31, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A conductive guidewire having at least an exposed distal tip is endovascularly steered into an epicardial surface of a heart via the venous tributaries of the coronary sinus. A selected site is contacted by the tip of the guidewire and tested by means of the guidewire to determine suitability for permanent lead implantation. Implantation of the lead at the contacted site is contingent on the determination of the adequacy of all electrophysiological parameters. Testing includes the steps of determining the amplitude and slew rate of the local electrogram, generating an electrical stimulus, communicating the stimulus to the contacted site by means of the guidewire, sensing an electrophysiological response to the stimulus through the guidewire and determining that the pacing threshold parameters are appropriate. A permanent pacing lead is then chosen and guided by means of the guidewire to the contacted site and implanted.
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