Modes of Pacemaker Function

  • Paul J. Wang
  • Amin Al-Ahmad
  • Henry H. Hsia
  • Paul C. Zei

The method of classifying pacemaker function originated in 1987 as the NASPE/BPEG (North American Society of Pacing and Electrophysiology/ British Pacing and Electrophysiology Group). The classification has subsequently been modified to incorporate rate modulated pacing and multisite pacing (Table 3.1). The first position of the code indicates the cardiac chamber paced, which may include the atrium (A), ventricle (V), both the atrium and ventricle (dual or D), or none (O). The second position represents the cardiac chamber sensed, which may include the atrium (A), ventricle (V), both the atrium and ventricle (dual or D), or none (O). Manufacturers may also designate S for a single chamber that is sensed, or paced, either the atrium or the ventricle. The third position represents the function that the pacemaker performs: triggered (T), inhibited (I), triggered and inhibited (dual or D), or none (O). Triggered refers to pacing in the chamber paced after the sensing of intrinsic activity in the chamber sensed. The sensing and pacing may occur in different chambers.


Ventricular Pace Atrial Pace Biventricular Pace Pace Mode Dual Chamber Pace 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Paul J. Wang
    • 1
  • Amin Al-Ahmad
    • 2
  • Henry H. Hsia
    • 2
  • Paul C. Zei
    • 2
  1. 1.Stanford University Medical CenterStanfordUSA
  2. 2.Division of Cardiovascular MedicineStanford University Medical CenterStanfordUSA

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