Why the study?
Does the use of screw-in versus nonscrew atrial leads affect acute and chronic P wave amplitude and atrial stimulation thresholds?
Population
64 patients with permanent transvenous atrial leads (33 with screw-in leads, 31 with nonscrew leads)
Comparison
Permanent transvenous atrial screw-in leads vs Permanent transvenous atrial nonscrew leads
Design
Cohort
Follow-up
647 +/- 297 days for screw-in leads; 855 +/- 512 days for…
Authors
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Supports use of either atrial lead type for chronic sensing; leaves open randomized comparisons on other endpoints.
Does the use of screw-in versus nonscrew atrial leads affect acute and chronic P wave amplitude and atrial stimulation thresholds?
While nonscrew atrial leads have higher acute P wave amplitudes and a transient early attenuation, chronic P wave amplitudes and stimulation thresholds do not differ significantly from screw-in leads.
Shandling et al. (1990) studied this question.
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