Introduction

Pacemakers are implantable devices used to control heart rate and rhythm in patients for whom arrhythmia is an intrinsic r&r inhibitor.

A lead, or leads, are inserted into the atrium and/or ventricles and the pacemaker box device sends electrical stimulus to the heart via this mechanism, in order to trigger depolarisation. Keep Up The PaceThe majority of pacemakers are designed to perform four functions:

  • Stimulate cardiac depolarisation
    • Capture
      • Depolarisation of chambers in response to a pacing stimulus
  • Sense intrinsic depolarisation
    • Sensing
      • Detection of intrinsic cardiac activity
  • Respond to increased metabolic demand by increasing pacing volume
  • Provide diagnostic information via internal storage
    • Cardiac events
    • Battery life
    • Functional instructions

Pacemaker systems come in a number of forms, with multiple functions, and there exist many devices across numerous manufacturers.

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