title: [Erectile dysfunction after non-nerve sparing radical pelvic surgery. Therapeutical experience with sildenafil and L-arginine evaluated by Buckling test].
abstract: BACKGROUND
  Patients undergoing radical pelvic floor surgery are often find that sexual function is impaired. In this research hypothesis, we evaluated the efficacy of alternative therapy to conventional PGE 1 injections, such as the association of Sildenafil and L-Arginine. This association is based on the principle that L-Arginine, the precursor of nitric oxide, improves the effect of Sildenafil, which is effective in the presence of nitric oxide.
  
  
  METHODS
  The experimental plan was to make a comparative study between 2 random groups of patients selected from those undergoing radical cystectomies and prostatectomies over the past three years. 116 patients were eligible (64 prostatectomies and 52 cystectomies). The first random group was treated with Sildenafil alone and the second with Sildenafil and L-Arginine. The efficacy of treatment was evaluated using the Buckling test (pressure threshold of cavernous flexation at penile axial rigidity) once after ambulatorial administration and then by telephone interview (subjective evaluation) after administration at domicile.
  
  
  RESULTS
  The starter dose was 50 mg and was inefficient in both groups (Buckling test between 0 and 250). 100-mg doses gave significant results (Buckling test >500) in both groups, especially the second. Cardiopathic patients, diabetics and patients with retinal disorders or who were unmotivated were excluded from the study. The mean age of patients was 65.
  
  
  CONCLUSIONS
  The resumption of relatively satisfactory sexual activity was demonstrated using non-invasive pharmacological treatment.
authors.affiliation: Istituto di Urologia, IRCCS Ospedale Maggiore, Milan, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Mantovani
authors.forename: E
authors.initials: E
authors.lastname: Patelli
authors.forename: F
authors.initials: F
authors.lastname: Colombo
authors.forename: F
authors.initials: F
authors.lastname: Pozzoni
authors.forename: S
authors.initials: S
authors.lastname: Confalonieri
authors.forename: E
authors.initials: E
authors.lastname: Pisani
mesh_terms: D000368:Aged; D001120:Arginine / Q000627:therapeutic use*; D007172:Erectile Dysfunction / Q000188:drug therapy*; D006801:Humans; D008297:Male; D017773:Pelvic Floor / Q000601:surgery*; D010726:Phosphodiesterase Inhibitors / Q000627:therapeutic use*; D010879:Piperazines / Q000627:therapeutic use*; D011183:Postoperative Complications / Q000188:drug therapy*; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones
chemical_list: D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D001120:Arginine; D000068677:Sildenafil Citrate
vernacular_title: Disfunzione erettiva da chirurgia pelvica demolitiva non nerve-sparing. Esperienza terapeutica con sildenafil e L-Aginina valutata con Buckling test.