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Related Experiment Videos

Intrathecal opioids and lower urinary tract function: a urodynamic evaluation.

Peter W Kuipers1, Ed T Kamphuis, Ger E van Venrooij

  • 1Department of Anesthesiology, University Medical Center Utrecht, The Netherlands.

Anesthesiology
|May 29, 2004
PubMed
Summary

Intrathecal opioids like morphine and sufentanil can impair bladder function. Sufentanil leads to faster recovery of normal lower urinary tract function compared to morphine, with recovery time depending on the dose.

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Area of Science:

  • Anesthesiology
  • Urology
  • Pharmacology

Background:

  • Opioid administration via the intrathecal route can lead to lower urinary tract dysfunction.
  • This study investigates the comparative effects of morphine and sufentanil on lower urinary tract function.

Purpose of the Study:

  • To compare the effects of intrathecal morphine and sufentanil on lower urinary tract function in healthy male volunteers.
  • To assess the dose-dependent impact of these opioids on bladder function and recovery.

Main Methods:

  • Randomized, double-blind study design with two doses for each opioid.
  • Urodynamic evaluations including pressure and flow measurements.
  • Hourly assessment of urge sensation and urinary flow rates until full recovery.

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Main Results:

  • Both morphine and sufentanil caused dose-dependent suppression of detrusor contractility and reduced urge sensation.
  • Mean recovery times were significantly shorter for sufentanil (5-8 hours) compared to morphine (14-20 hours).
  • Recovery profiles correlate with the spinal pharmacokinetics of the administered opioids.

Conclusions:

  • Intrathecal opioids impair bladder function through dose-dependent detrusor contractility suppression and reduced urge sensation.
  • Sufentanil facilitates a significantly faster recovery of normal lower urinary tract function than morphine.
  • Recovery time is directly influenced by the administered dose of intrathecal opioids.