Key result
In a canine model, there was no significant relationship between chronic surface irregularities on explanted polyurethane pacemaker leads and their physical integrity or strength at explant.
Why the study?
Do surface irregularities on explanted polyurethane pacemaker leads correlate with loss of physical integrity or electrical performance in a canine model?
Population
Dogs implanted with ten 6 Fr atrial polyurethane leads and ten 4 Fr ventricular leads
Design
Preclinical
Follow-up
mean 26 +/- 2 weeks and 29 +/- 2 weeks
Authors
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No relationship between surface irregularities and lead integrity in canines; leaves open human applicability and need for prospective validation.
Do surface irregularities on explanted polyurethane pacemaker leads correlate with loss of physical integrity or electrical performance in a canine model?
In a canine model, short-term implantation of polyurethane pacemaker leads resulted in surface irregularities that did not significantly affect physical integrity or electrical thresholds.
TIMMIS et al. (1983) studied Pacemaker lead evaluation (n=20). Polyurethane pacemaker leads was evaluated on Relationship between physical testing and extraction force, lead size, integrity on removal, sample location or SEM scores. In a canine model, there was no significant relationship between chronic surface irregularities on explanted polyurethane pacemaker leads and their physical integrity or strength at explant.
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