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Cardiac implantable electronic devices' longevity: A novel modelling tool

a day ago
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0333195
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  • #Power Consumption Index
  • #Device Longevity
  • #Cardiac Implantable Electronic Devices
  • The study introduces a Power Consumption Index (PCI) to estimate and compare the longevity of Cardiac Implantable Electronic Devices (CIEDs).
  • PCI is calculated using the formula PCI = t x I/C, where t is 1 hour, I is the current required by the device, and C is its battery capacity.
  • The model was validated using real-world data from the Swedish device registry, showing low error rates between modeled and industry-reported longevities.
  • Background current (Ibackground) accounts for more than 50% of PCI, making it a significant factor in device longevity.
  • Pacing current (Ipacing) is the second largest contributor, varying by device type (20% for standard pacemakers, 30% for CRT-P, and 40% for leadless devices).
  • Optional settings like remote monitoring and IEGM storage can impact longevity, with some algorithms reducing it by up to 1 year.
  • The study highlights disparities in longevity between manufacturers and device generations, emphasizing the need for standardized reporting.
  • Leadless pacemakers, despite smaller battery capacities, achieve reasonable longevity due to lower background current.
  • The PCI model provides a tool for clinicians to personalize device selection and programming for optimal patient outcomes.
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