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Related Experiment Videos

Penile plethysmography on impotent men using vacuum constrictor devices.

J L Marmar1, T J DeBenedictis, D E Praiss

  • 1Division of Urology, Cooper Hospital/University Medical Center, Robert Wood Johnson Medical School, Camden, New Jersey.

Urology
|September 1, 1988
PubMed
Summary

Vacuum constrictor devices maintain penile blood flow during use. Penile plethysmography suggests constrictor rings are safe for erectile dysfunction patients, aiding device selection.

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Area of Science:

  • Urology
  • Vascular Physiology

Background:

  • Vacuum constrictor devices (VCDs) are noninvasive treatments for erectile dysfunction.
  • Clinical use of VCDs is limited by a lack of data on their effects on penile blood flow.

Purpose of the Study:

  • To evaluate the impact of VCD constrictor rings on penile blood flow using penile plethysmography.
  • To assess the safety and efficacy of VCDs in patients with varying penile brachial index (PBI) values.

Main Methods:

  • Penile plethysmography was used to measure penile blood flow in 51 men.
  • Measurements were taken before, during, and after the application of a VCD constrictor ring.

Main Results:

  • Constriction caused a 70-75% decline in pulse-volume curve amplitude, but continuous blood flow was maintained.

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  • Penile blood flow returned to baseline within 60 seconds of ring removal in all patients.
  • Post-constriction hyperemia was observed in 33 patients, suggesting transient blood flow increase.

    • Conclusions:

    • VCD constrictor rings appear safe for patients, maintaining adequate penile blood flow.
    • Penile plethysmography is a valuable tool for patient selection and ensuring proper constrictor ring fit.
    • Regular follow-up assessments are recommended for men using VCDs.