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Related Experiment Videos

Long term performance of atrial leads

K K Sethi1, M Bhargava, J C Mohan

  • 1Department of Cardiology, G B Pant Hospital, New Delhi.

Indian Heart Journal
|March 1, 1994
PubMed
Summary

Atrial leads demonstrate excellent long-term performance, with over 83% functioning well at 9 years. Early issues like sensing problems and lead dislodgement were manageable, and late malfunctions were uncommon.

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Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Medical Device Performance

Background:

  • Atrial leads are crucial components in pacemakers for managing cardiac rhythm disorders.
  • Evaluating the long-term reliability of implanted atrial leads is essential for patient care and device development.

Purpose of the Study:

  • To assess the long-term performance and complication rates of atrial leads implanted over a decade.
  • To identify the incidence and nature of lead malfunctions and their management.

Main Methods:

  • A retrospective analysis of 163 atrial leads (DDD and AAI) implanted in 158 patients from 1981 to 1993.
  • Patient follow-up in a Pacemaker Clinic for up to 124 months (mean 50 months), monitoring lead function and complications.

Main Results:

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  • Transient malfunctions (sensing/pacing) occurred in 18 cases within 2 weeks, often resolving spontaneously or with reprogramming.
  • Lead dislodgement occurred in 2.5% of patients within the first week.
  • Late complications beyond 12 months included failure to sense (5%), failure to pace (2%), and insulation breaks (0.6%), mostly manageable by reprogramming.
  • Lead survival rates were high: 98% at 1 year, 95% at 4 years, and 83% at 9 years.

Conclusions:

  • Atrial leads exhibit excellent long-term performance and reliability.
  • While early lead dislodgement and transient malfunctions can occur, late complications are infrequent and often manageable, supporting their continued use.