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Related Experiment Videos

Tadalafil-associated priapism.

Stephen H King1, Maralyn Hallock, Jared Strote

  • 1Department of Urology, University of Washington School of Medicine, Seattle, Washington, USA. shking@u.washington.edu

Urology
|July 30, 2005
PubMed
Summary
This summary is machine-generated.

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A man experienced prolonged, painful erections after taking tadalafil, a phosphodiesterase 5 inhibitor. This case highlights a rare side effect of tadalafil, leading to persistent priapism and subsequent erectile dysfunction.

Area of Science:

  • Urology
  • Pharmacology

Background:

  • Phosphodiesterase 5 (PDE5) inhibitors like tadalafil are commonly prescribed for erectile dysfunction.
  • Priapism, a prolonged erection, is a rare but serious side effect associated with PDE5 inhibitors.

Observation:

  • A healthy 46-year-old male developed a 36-hour history of ischemic priapism after tadalafil use.
  • Initial bedside management in the Emergency Department failed to resolve the condition.

Findings:

  • The patient underwent operative caverno-spongiosal shunting for refractory ischemic priapism.
  • Postoperatively, the erection initially improved but resolved over 48 hours with manual compression.
  • The patient subsequently developed persistent erectile dysfunction.

Implications:

Related Experiment Videos

  • This case represents the first reported instance of priapism associated with tadalafil.
  • Clinicians should be aware of this potential adverse event when prescribing tadalafil.
  • Further investigation into the mechanisms of tadalafil-induced priapism and its long-term consequences is warranted.