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Database of Abstracts of Reviews of Effects (DARE): Quality-assessed Reviews [Internet]. York (UK): Centre for Reviews and Dissemination (UK); 1995-.

Database of Abstracts of Reviews of Effects (DARE): Quality-assessed Reviews [Internet].

Treating erectile dysfunction and central neurological diseases with oral phosphodiesterase type 5 inhibitors. Review of the literature

Review published: 2012.

Bibliographic details: Lombardi G, Nelli F, Celso M, Mencarini M, Del Popolo G.  Treating erectile dysfunction and central neurological diseases with oral phosphodiesterase type 5 inhibitors. Review of the literature. Journal of Sexual Medicine 2012; 9(4): 970-985. [PubMed: 22304626]

Abstract

INTRODUCTION: Erectile dysfunction (ED) is reported in a high percentage of patients with central neurological disorders (CND).

AIM:   An up-to-date review on oral phosphodiesterase 5 inhibitors (PDE5): sildenafil, tadalafil, and vardenafil for individuals with CND and ED.

MAIN OUTCOME MEASURES: Various questionnaires on ED, such as the International Index of Erectile Function composed of 15 questions.

METHODS: Internationally published clinical studies evaluating the efficacy and safety of PDE5 on subjects with CND and ED were selected.

RESULTS: Overall, 28 articles on PDE5 used to treat patients with CND and ED were included. With each of the three PDE5 compared to placebo or erectile baseline, literature reported significant statistical improvement (P < 0.01; P < 0.05) only in patients with spinal cord injury (SCI). PDE5 efficacy was documented for SCI patients up to 10 years. The most frequent predicable factor for PDE5 success was the presence of upper motoneuron lesion. Each of the three clinical sildenafil studies documented statistically significant improvement on erectile function in Parkinson's patients (P < 0.01; P < 0.05). Two studies reported discordant results about sildenafil's effectiveness on multiple sclerosis (MS) patients; one on tadalafil showed significant statistical efficacy on erection versus baseline (P < 0.01; P < 0.05). The only spina bifida article determined that sildenafil remarkably improved erectile function. Overall, drawbacks were mostly slight-moderate, except in subjects with multiple system atrophy where sildenafil caused severe hypotension.

CONCLUSIONS: PDE5 represent first line ED therapy only for SCI patients, though treatment results through meta-analysis were not possible. Encouraging results are reported for Parkinson's and MS patients. PDE5 use for other CND patients is limited for various reasons, such as ED and concomitant libido impairment caused by depression and/or sexual endocrinology dysfunctions, and because PDE5 may cause a worsening of neurological illness. Medical centers staffed by health professionals able to counsel patients on the possible use of PDE5 are needed.

© 2012 International Society for Sexual Medicine.

CRD has determined that this article meets the DARE scientific quality criteria for a systematic review.

Copyright © 2014 University of York.

PMID: 22304626

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