How are cardiac implantable electronic devices (CIEDs) categorized?

Updated: Oct 29, 2018
  • Author: Albert H Tsai, MD; Chief Editor: Sheela Pai Cole, MD  more...
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CIEDs can also be categorized according to the number of chambers upon which the device acts, as follows:

  • Single-chamber devices (either atrium or ventricle)
  • Dual-chamber devices (both atrium and ventricle)

Additional CIED parameters include the following:

  • Sensitivity - The voltage (mV) above which the device detects a native electric deflection on electrocardiography (ECG) and perceives a chamber depolarization (either atrial or ventricular)
  • Threshold - The minimum current (mA) provided by device pacing that is required to elicit chamber depolarization
  • Capture - The successful depolarization of the atrium or ventricle in response to pacing

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