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A New Efficient NanoTip Lead
Author(s) -
STOKES KEN,
BIRD TERI
Publication year - 1990
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1990.tb06913.x
Subject(s) - medicine , electrical impedance , lead (geology) , electrode , high impedance , omega , amplitude , cardiology , biomedical engineering , electrical engineering , optics , physics , engineering , quantum mechanics , geomorphology , geology
STOKES, K., ET AL.: A New Efficient NanoTip Lead. The ideal lead has low, stable acute and chronic thresholds, high pacing impedance, and good sensing. Leads with low, stable thresholds have been developed, but pacing impedance has been in the 600 Ω region. One way to increase pacing impedance is to decrease the electrode's surface area. The threshold performance and sensing ability of < 5 mm 2 electrodes have been considered questionable, up to now. We have developed α 1.5 mm 2 porous, platinized, steroid‐eluting electrode and have demonstrated in canine studies that it has excellent performance. Chronic thresholds are low at about 0.65 ± 0.28 V (ventricular) and 0.42 ± 0.12 V (atrial) at 0.5 msec. Chronic pacing impedance is in the 1200–1300 Ω region, but mean chronic R and P wave source impedance is ≤ 1500 Ω. Sensing is excellent, with almost double the P wave amplitudes usually measured in the canine.