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Related Experiment Videos

Modified sonourethrography assists urethral catheterization.

Tomonori Minagawa1, Toshiro Suzuki2, Takahisa Domen2

  • 1Department of Urology, Shinshu University Hospital, Shinshu University School of Medicine, 3-1-1 Asahi, 390-8621, Matsumoto, Nagano, Japan. minagawat@shinshu-u.ac.jp.

Journal of Medical Ultrasonics (2001)
|February 6, 2016
PubMed
Summary

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Modified sonourethrography (mSUG) helps identify causes of difficult urethral catheterization. This imaging technique provides real-time guidance to overcome challenges during catheter insertion in male patients.

Area of Science:

  • Urology
  • Medical Imaging

Background:

  • Sonourethrography (SUG) is an underutilized imaging technique for the male urethra.
  • Difficulties in urethral catheterization necessitate improved diagnostic and procedural guidance.

Purpose of the Study:

  • To modify SUG for evaluating difficult urethral catheterization.
  • To determine a safe and effective approach for resolving catheterization problems using modified SUG (mSUG).

Main Methods:

  • Modified SUG (mSUG) involved retrograde urethral jelly injection.
  • Transcutaneous or transrectal ultrasonography was employed based on catheter lodging location (penile or other urethral regions).
  • Causes of difficult catheterization were categorized into physiological and pathological conditions.

Main Results:

Keywords:
Modified sonurethrographySonourethrographyTransrectal ultrasonographyUrethraUrethral catheterization

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  • mSUG accurately identified the site of obstruction in physiological conditions (bulbous, membranous, prostatic urethra).
  • Pathological conditions like urethral strictures were clearly visualized in penile and prostatic urethra.
  • mSUG provided real-time assistance for navigating catheters or indicated when to abandon catheterization.

Conclusions:

  • Modified sonourethrography (mSUG) offers clear visualization of the male urethra during catheterization.
  • mSUG serves as a valuable tool for real-time procedural assistance in challenging catheterizations.
  • This technique aids in diagnosing causes and guiding management of difficult urethral catheterization.