Review Special Issue: Sexual Dysfunction TheScientificWorldJOURNAL (2010) 10, 1556–1565 TSW Urology ISSN 1537-744X; DOI 10.1100/tsw.2010.153 Penile Microvascular Arterial Bypass Surgery: Indications, Outcomes, and Complications Ricardo Munarriz Department of Urology and Center for Sexual Medicine, Boston University School of Medicine, Boston, MA E-mail:
[email protected] Received September 24, 2009; Revised June 15, 2010; Accepted July 2, 2010; Published August 17, 2010 Penile microarterial bypass surgery (MABS) may be the only treatment capable of restoring normal erectile function without the necessity for the chronic use of vasoactive medications or placement of a penile prosthesis. Lack of standardization in patient selection, hemodynamic evaluation, surgical technique, and limited long-term outcome data using validated instruments has resulted in this surgery being considered experimental. The members of the Erectile Dysfunction Guideline Update Panel reviewed the available MABS publications and only four of 31 manuscripts met the criteria for the Arterial Occlusive Disease Index patient. The total studied population of these four publications was 50, which was considered too small to determine if MABS is effective or not. Reported successful outcomes were 36–80 and 91% for inferior epigastric artery (IEA) to dorsal vein and IEA to dorsal artery MABS, respectively. We recently published the largest long-term outcome MABS study using validated questionnaires (71 men aged 30.5 ± 9.2 years; mean follow-up 34.5 ± 18 months). The mean pre- and postoperative total International Index of Erectile Function, erectile function domain, questions 3 and 4 scores were 35.5 ± 14.8, 13.7 ± 6.7, 2.2 ± 1.4, 2.1 ± 1.3, and 56.2 ± 16.6, 23.8 ± 6.6, 4.1 ± 1.4, and 3.9 ± 1.5, respectively.