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Neurovascular bundle block as predictor of postoperative erectile function after radical prostatectomy
R T Strebel1, M Muentener, M Fatzer
1Department of Urology, University Hospital, Zurich, Switzerland. raeto.strebel@usz.ch
International Journal of Impotence Research
|May 20, 2005
Summary
Local anesthesia during prostate biopsy impairs erectile function. Saline injections preserved erections, suggesting a model for assessing post-prostatectomy erectile function after nerve-sparing surgery.
Area of Science:
- Urology
- Neuroscience
- Sexual Medicine
Background:
- Prostate biopsy can impact erectile function.
- Assessing erectile function post-prostatectomy is crucial.
- Neurovascular bundle anesthesia is a potential factor.
Purpose of the Study:
- To evaluate the effect of neurovascular bundle nerve block on erectile function.
- To establish a model for assessing erectile function after prostatectomy.
- To compare ropivacaine hydrochloride with saline for nerve block efficacy.
Main Methods:
- Randomized trial of 11 patients undergoing prostate biopsy.
- Bilateral neurovascular bundle injection with ropivacaine or saline.
- Audiovisual sexual stimulation and Rigiscan-Plus erection monitoring.
Main Results:
- Saline group showed significantly stronger and longer erections than the ropivacaine group.
- Local anesthesia of the neurovascular bundle impaired erectile response.
- Patient characteristics were comparable between groups.
Conclusions:
- Neurovascular bundle anesthesia negatively impacts erectile function.
- This experimental setup may model outcomes of unilateral nerve-sparing prostatectomy.
- Further research is warranted to refine this assessment model.