This report identifies a critical mechanical failure (helix detachment) in a specific active fixation pacemaker lead, highlighting a potential safety issue.
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Alerts clinicians to helix detachment risk with Medtronic 6959 leads; case report leaves open incidence and need for surveillance.
The introduction of active fixation electrodes has been a major advance in permanent atrial and ventricular endocardial pacing. We report here an important complication in the use of one such device, the Medtronic transvenous unipolar screw-in ventricular lead (Model 6959).
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Dawkins et al. (1983) studied this question.
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