Filling a catheter with electrolyte solution converts it to a conductor and allows the safe recording of an electrogram from near or within the right atrium. This technic is very useful in localizing the internal position of a cardiac catheter and particularly in rhythm analysis. Four cases are presented to review the value of this salt bridge technic.

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http://dx.doi.org/10.1097/00007611-197707000-00007DOI Listing

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