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Erschienen in: Obesity Surgery 5/2015

01.05.2015 | Original Contributions

Significant Improvement of Erectile Function after Roux-en-Y Gastric Bypass Surgery in Obese Chinese Men with Erectile Dysfunction

verfasst von: Li Kun, Zhang Pin, Di Jianzhong, Han Xiaodong, Yu Haoyong, Bao Yuqian, Zhang Hongwei

Erschienen in: Obesity Surgery | Ausgabe 5/2015

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Abstract

Background

We aimed to examine the effect of Roux-en-Y gastric bypass surgery (RYGB) on erectile dysfunction (ED), cavernosal morphological vasculopathy, and carotid wall alterations in severely obese Chinese men.

Methods

We performed a retrospective cohort study of 39 obese men with ED who underwent RYGB between 2011 and 2012. Erectile function was assessed by the International Index of Erectile Function-5 (IIEF-5) before and 1 year after surgery. Intima-media thickness of carotid and cavernosal arteries and cavernosal peak systolic velocity (PSV) were investigated by color Doppler ultrasound. Endothelial function was assessed with the L-arginine test.

Results

Eighteen (46.2 %) men had cavernosal vasculopathy and 21 (53.8 %) had carotid vasculopathy before surgery, and these proportions decreased to 15.4 % and 23.1 % after surgery, respectively. There was a significant improvement in carotid and cavernosal intima-media thickness postoperatively. IIEF-5 (17.3 to 23.8, P < 0.05), PSV (23 to 37, P < 0.05), and endothelial scores (6.1 to 8.2, P < 0.05) were all improved after RYGB. The increase in endothelial function scores was positively associated with changes in pre- to postoperative IIEF-5 scores (r = 0.438, P = 0.017). Younger age, being married, and lower preoperative IIEF-5 scores were independently related to greater improvement in erectile function.

Conclusions

ED can be relieved after RYGB in obese Chinese patients, accompanied by the improvement of cavernosal morphological vasculopathy and carotid wall alterations. Changes in endothelial function may contribute to this improvement, while preoperative body mass index and the amount of weight loss do not.
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Metadaten
Titel
Significant Improvement of Erectile Function after Roux-en-Y Gastric Bypass Surgery in Obese Chinese Men with Erectile Dysfunction
verfasst von
Li Kun
Zhang Pin
Di Jianzhong
Han Xiaodong
Yu Haoyong
Bao Yuqian
Zhang Hongwei
Publikationsdatum
01.05.2015
Verlag
Springer US
Erschienen in
Obesity Surgery / Ausgabe 5/2015
Print ISSN: 0960-8923
Elektronische ISSN: 1708-0428
DOI
https://doi.org/10.1007/s11695-014-1465-x

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