Key result
Telemetered lead impedance measurements showed a good but limited correlation with direct measurements (r=0.58-0.87) and tended to rise during the first year of follow-up.
Why the study?
Does telemetered lead impedance measurement correlate with direct measurement and remain stable over time in patients with implanted cardiac devices?
Observational (n=91)
Does telemetered lead impedance measurement correlate with direct measurement and remain stable over time in patients with implanted cardiac devices?
Effect estimate: r = 0.58 to 0.87
Telemetered lead impedance correlates moderately with direct measurement and tends to rise over the first year, suggesting baseline telemetered values should be obtained immediately postoperatively for accurate longitudinal tracking.
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May support immediate postoperative telemetered baselines for tracking; leaves open prospective validation of impedance thresholds in device cohorts.
Ben-Zur et al. (1994) conducted an observational in Patients undergoing pacemaker implantation or generator replacement (n=91). Telemetered lead impedance measurement vs. Direct lead impedance measurement was evaluated on Correlation between direct and telemetered lead impedance measurements (r = 0.58 to 0.87). Telemetered lead impedance measurements showed a good but limited correlation with direct measurements (r=0.58-0.87) and tended to rise during the first year of follow-up.
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