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Urodynamic evaluation of a chronically implanted bladder pacemaker

L W Jones, U Jonas, E A Tanagho

    Investigative Urology
    |March 1, 1976
    PubMed
    Summary
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    An implantable bladder pacemaker showed no significant vesical function impairment over 10 weeks. However, electrical stimulation spread to muscles, and bladder response decreased due to fibrous tissue buildup around electrodes.

    Area of Science:

    • Urology
    • Biomedical Engineering
    • Neurosurgery

    Background:

    • Implantable bladder pacemakers offer potential for treating bladder dysfunction.
    • Chronic studies are crucial for evaluating long-term safety and efficacy of such devices.

    Purpose of the Study:

    • To assess the chronic effects of an implantable bladder pacemaker on vesical function.
    • To evaluate electrode array performance and stimulation spread over a 10-week period.

    Main Methods:

    • A chronic study design was employed over 10 weeks.
    • Vesical function was monitored during electrical stimulation via an implantable electrode array.
    • Spread of electrical stimulation to adjacent musculature was assessed.

    Main Results:

    Related Experiment Videos

    • The electrode array did not significantly impair vesical function during the study.
    • Electrical stimulation spread to the voluntary perineal musculature.
    • A decrease in bladder response to consistent stimulation parameters was observed, likely due to fibrous encapsulation of electrodes.

    Conclusions:

    • While the implantable bladder pacemaker electrode array showed initial safety for vesical function, unintended stimulation spread and reduced efficacy due to fibrous reaction are significant concerns.
    • Further research is needed to optimize electrode design and mitigate foreign body response for long-term implantable bladder pacemaker function.