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ICD therapy in the new millennium.

M R Gold1

  • 1Department of Medicine, University of Maryland Medical Center, Baltimore, USA. Mgold@medicine.umaryland.edu

Cardiology Clinics
|June 13, 2000
PubMed
Summary

Implantable cardioverter-defibrillator (ICD) therapy has advanced significantly, offering improved diagnostics, smaller devices, and longer longevity. Modern ICDs provide enhanced arrhythmia management and treat multiple cardiac conditions.

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Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Medical Device Technology

Background:

  • The evolution of implantable cardioverter-defibrillator (ICD) therapy over 15 years.
  • Early ICDs required invasive implantation and had limited diagnostic features.
  • Short pulse-generator longevity was a significant limitation in early devices.

Purpose of the Study:

  • To review the advancements in ICD technology and therapy.
  • To highlight improvements in device capabilities, implantation procedures, and patient outcomes.
  • To discuss the expanding therapeutic applications of modern ICDs.

Main Methods:

  • Review of technological progress in ICDs over the past 15 years.
  • Comparison of early ICDs with contemporary devices regarding diagnostics, size, and longevity.
  • Analysis of changes in implantation techniques and defibrillation thresholds.
  • Examination of expanded therapeutic functions beyond ventricular arrhythmias.

Main Results:

  • Modern ICDs offer advanced electrocardiographic signal analysis and diagnostics.
  • Device size has decreased, and implantation procedures are less invasive, approaching pacemaker implantation simplicity.
  • Pulse-generator longevity has increased to over 6 years.
  • Current ICDs can manage atrial arrhythmias and congestive heart failure in addition to ventricular arrhythmias.

Conclusions:

  • Significant progress in ICD technology has enhanced diagnostic capabilities, device longevity, and therapeutic efficacy.
  • Minimally invasive implantation and improved device performance make ICDs increasingly feasible for routine outpatient procedures.
  • Future advancements in lead technology and arrhythmia discrimination promise further improvements in ICD therapy reliability and patient care.

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