Long-term performance of transvenous, steroid-eluting, high impedance, passive-fixation ventricular pacing leads

Kuan Hung Yeh, Chun Chieh Wang*, Ming Shien Wen, Chung Chuan Chou, San Jou Yeh, Delon Wu

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

10 Scopus citations

Abstract

The long-term performance of two high impedance, steroid-eluting, passive-fixation ventricular leads, porous platinum iridium electrode CPI Selute Picotip 4035 (131 patients), and platinized platinum electrode Medtronic Capsure Z 5034 (57 patients), was compared with one conventional 8.0-mm 2 porous platinum iridium electrode CPI Selute 4285 (38 patients). The mean follow-up period was 28 ± 14 months. Capture threshold, R wave amplitude, and pacing impedance were measured at the time of implantation, immediately after implantation, 1 week, 1, 3, and 6 months after implantation and then every 6 months thereafter. The two high impedance leads revealed a higher sensing slew rate than the conventional lead, the R wave amplitude was similar among the three groups, but the voltage threshold at 0.5-ms pulse width was significantly higher in porous platinum iridium groups at the time of implantation. During follow-up, the conventional lead revealed a significantly higher R wave amplitude within the first 3 months, however, this pattern disappeared after 3 months. Pacing impedance was significantly higher in the high impedance porous platinum iridium electrode groups. Voltage threshold at 0.5-ms pulse width was similar among the three groups in the first 3 months, however, it increased gradually and was significantly higher in porous platinum iridium electrode groups subsequently. The energy threshold at 0.5 ms was significantly lower in the two high impedance groups than the conventional group, but no difference was found in the two high impedance groups. Lead related complications were similar among the three groups. In conclusion, high impendence electrodes with different design and materials had different properties; platinized platinum electrode showed a lower pacing impedance but had a more stable long-term capture threshold as compared to the porous platinum iridium electrode. Further studies are mandatory for the development of an ideal pacing lead.

Original languageEnglish
Pages (from-to)1399-1404
Number of pages6
JournalPACE - Pacing and Clinical Electrophysiology
Volume27
Issue number10
DOIs
StatePublished - 10 2004

Keywords

  • High impedance electrode
  • Pacemaker longevity
  • Steroid-eluting electrode

Fingerprint

Dive into the research topics of 'Long-term performance of transvenous, steroid-eluting, high impedance, passive-fixation ventricular pacing leads'. Together they form a unique fingerprint.

Cite this