Clinical Evaluation of an Automatic Sensitivity Adjustment Feature in a Dual Chamber Pacemaker

JOHN H. WILSON, CHARLES J. LOVE, ELIAS H. WETTENSTEIN

Research output: Contribution to journalArticlepeer-review

Abstract

The clinical evaluation of a new automatic sensitivity adjustment feature in the Cosmos fl, Model #284–05 is described. This feature, designed to maintain a 2:1 safety margin for sensing intrinsic signals, was activated by way of special programmer software in ten patients at two centers. While the feature worked satisfactorily in some cases, it did not perform as expected, and undersensing in both chambers was observed. This may have been due to biasing the adjustment toward maximum rather than minimum electrograms, This study suggested that electrograms may vary by more than 100% which underscores the importance of this feature, and reinforces the need for continued development.

Original languageEnglish (US)
Pages (from-to)1220-1223
Number of pages4
JournalPacing and Clinical Electrophysiology
Volume13
Issue number10
DOIs
StatePublished - Oct 1990
Externally publishedYes

Keywords

  • automatic sensitivity adjustment
  • dual chamber pacemaker

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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