Failure (Loss) to Capture ECG Interpretation


Description

  • When a pacemaker loses its ability to cause depolarization (capture), the inherent rhythm of the patient will become present within the tracing.
  • As mentioned earlier in this presentation you will note the presence of a pacing spike, but you will not see a waveform immediately following it.
  • You will likely see a delay after the spike, then the presence of some waveform of different morphology
pacemaker ecg image 109

Practice Strip

pacemaker ecg image 110

Analyze this tracing using the five steps of rhythm analysis.

Show Answer
  • Rhythm: Irregular
  • Rate: 80
  • P Wave: absent
  • PR interval: n/a
  • QRS: 0.14 sec, two non-captured complexes 0.16 sec, all wide and bizarre
  • Interpretation: Ventricular Pacemaker Rhythm with Loss of Capture





Authors and Sources

Authors and Reviewers


Sources

  • Electrocardiography for Healthcare Professionals, 6th Edition Kathryn Booth and Thomas O'Brien
    ISBN10: 1265013470, ISBN13: 9781265013479
    McGraw Hill, 2023
  • Rapid Interpretation of EKG's, Sixth Edition
    Dale Dublin
    Cover Publishing Company
  • EKG Reference Guide
    EKG.Academy
  • 12 Lead EKG for Nurses: Simple Steps to Interpret Rhythms, Arrhythmias, Blocks, Hypertrophy, Infarcts, & Cardiac Drugs
    Aaron Reed
    Create Space Independent Publishing
  • Heart Sounds and Murmurs: A Practical Guide with Audio CD-ROM 3rd Edition
    Elsevier-Health Sciences Division
    Barbara A. Erickson, PhD, RN, CCRN
  • The Virtual Cardiac Patient: A Multimedia Guide to Heart Sounds, Murmurs, EKG Jonathan Keroes, David Lieberman
    Publisher: Lippincott Williams & Wilkin)
    ISBN-10: 0781784425; ISBN-13: 978-0781784429
  • Project Semilla, UCLA Emergency Medicine, EKG Training Breena R. Taira, MD, MPH
  • ECG Reference Guide
    PracticalClinicalSkills.com






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