Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Noise mode response at peak exercise in a DDD pacemaker.

B K Sudduth, D L Morris, E W Gertz

    Pacing and Clinical Electrophysiology : PACE
    |September 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Validating and optimizing spot sampling of urine to estimate urine output with creatinine as a marker in dairy cows.

    Journal of dairy science·2018
    Same author

    Cytoreductive surgery and HIPEC improve survival compared to palliative chemotherapy for biliary carcinoma with peritoneal metastasis: A multi-institutional cohort from PSOGI and BIG RENAPE groups.

    European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology·2018
    Same author

    The current practice of cytoreductive surgery and HIPEC for colorectal peritoneal metastases: Results of a worldwide web-based survey of the Peritoneal Surface Oncology Group International (PSOGI).

    European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology·2018
    Same author

    Validating intrinsic markers and optimizing spot sampling frequency to estimate fecal outputs.

    Journal of dairy science·2018
    Same author

    Effects of corn feeding reduced-fat distillers grains with or without monensin on nitrogen, phosphorus, and sulfur utilization and excretion in dairy cows.

    Journal of dairy science·2018
    Same author

    Continuous 11-week feeding of reduced-fat distillers grains with and without monensin reduces lactation performance of dairy cows.

    Journal of dairy science·2018
    Same journal

    Dual Coronary Sinus Lead Strategy to Avoid Tricuspid Valve Traversal in Biventricular Pacing.

    Pacing and clinical electrophysiology : PACE·2026
    Same journal

    A Case of Permanent Pacemaker Implantation via the Epicardial Approach Using the 3830 Lead in an 11-Day-Old Neonate (With Follow-Up of the Above Case).

    Pacing and clinical electrophysiology : PACE·2026
    Same journal

    Cryoballoon Versus Radiofrequency Ablation for Persistent Atrial Fibrillation: Meta-Analysis of Randomized Trials.

    Pacing and clinical electrophysiology : PACE·2026
    Same journal

    Tilt Test Duration in Suspected Vasovagal Syncope: Temporal Patterns and Diagnostic Yield in Patients From Central China.

    Pacing and clinical electrophysiology : PACE·2026
    Same journal

    Combined Leadless Pacing and Subcutaneous ICD Therapy in Long QT Syndromes.

    Pacing and clinical electrophysiology : PACE·2026
    Same journal

    Association of Anesthesia Modality With Procedural Parameters and Clinical Outcomes in PVI for Atrial Fibrillation.

    Pacing and clinical electrophysiology : PACE·2026
    See all related articles

    Demand pacemaker sensing malfunction can occur due to noise. P-waves falling within the noise sampling period caused asynchronous pacing in a DDD pacemaker during exercise.

    Area of Science:

    • Cardiology
    • Biomedical Engineering
    • Medical Device Technology

    Background:

    • Demand pacemakers are designed to sense intrinsic cardiac activity and pace only when necessary.
    • Sensing malfunctions can lead to inappropriate pacing or failure to pace, impacting patient safety.
    • The noise sampling period is a critical parameter influencing pacemaker sensing accuracy.

    Observation:

    • A specific instance of apparent sensing malfunction in a Cordis 415A DDD pacemaker was observed.
    • This malfunction manifested as noise mode reversion pacing at the programmed lower rate limit.
    • The event occurred during physical exercise, specifically when P-waves coincided with the pacemaker's noise sampling period.

    Findings:

    • Physiologic signals and external electromagnetic interference can trigger pacemaker refractoriness.

    Related Experiment Videos

  • When P-waves fall within the noise sampling period, demand pacemakers may incorrectly interpret this as noise.
  • This misinterpretation leads to asynchronous pacing at a predetermined escape rate, bypassing the sensed P-wave.

    • Implications:

    • Understanding the noise sampling period is crucial for diagnosing and preventing pacemaker malfunctions.
    • Pacemaker programming and device selection should consider potential noise interference during specific activities like exercise.
    • Further research into advanced noise discrimination algorithms may improve pacemaker reliability and patient outcomes.