Daniele Cornacchia, Giosue Mascioli*, Andrea Puglisi**,
Pier Vittorio Moracchini***, Marco Bernasconi****,
Giancarlo Pulitano°, Daniele Bernabo°°, Danilo Cervellati°°° and ISCLP group.
Cardiology Department, Ravenna, *Val Camonica Hospital, Esine, **Fatebenefratelli Hospital, Roma, ***S. Agostino Hospital, Modena, **** San Carlo Hospital, Milano, °Policlinico
M. Consolazione, Catania, °°S. Andrea Hospital, La Spezia,
°°°Civile Hospital, Imola, Italy
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Steroid elution improves electrical performance of
pacing leads both in the short and long-term follow-up. Nowadays pacing leads with different
steroid eluting mechanism and different steroids are available. We evaluated atrial and
ventricular lead models equipped with three different steroid-eluting mechanisms: Capsure
SP 5524 (n. 14), Membrane 1420T (n. 10), Selute 4185 (n. 18), Capsure Z 4033 (n. 73).
Pacing thresholds, sensing and impedance were measured using the PM telemetry 24 hours
post-implant, at 1, 3, 6 and 12 months follow-up. The pacemakers implanted were in all cases
Medtronic Thera.
Our data confirm that steroid elution electrodes show a very good electrical performance, a
very small pacing surface increases pacing impedance to a very significant extent and a
different steroid elution mechanism may also affect chronic pacing threshold.
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