title: Effects of robotic rectal surgery on sexual and urinary functions in male patients.
abstract: OBJECTIVE
  This study prospectively assessed the sexual and urinary functions, as well as factors influencing these functions, in patients who underwent open or robotic surgery for rectal cancer.
  
  
  METHODS
  Forty-five consecutive male patients who underwent rectal resection for rectal cancer were prospectively enrolled in this study. Their sexual and urinary functions were assessed through self-administered questionnaires comprising the International Index of Erectile Function (IIEF; sexual function) and the International Prostate Symptom Score (IPSS; urinary function) before and at 3, 6, and 12 months after surgery.
  
  
  RESULTS
  Fifteen patients who underwent robotic surgery and 22 who underwent open surgery were finally analyzed in this study. The total IIEF score and the individual score items did not change at 3, 6 or, 12 months after open or robotic surgery compared with the preoperative values. However, a univariate analysis revealed that age affected the urinary function 12 months after surgery, while both univariate and multivariate analyses revealed that postoperative complications affected the sexual function 12 months after surgery.
  
  
  CONCLUSIONS
  In this non-randomized comparison, the postoperative sexual and urinary functions were comparable between patients who underwent open rectal surgery and those who underwent robotic rectal surgery. Postoperative complications were a risk factor for sexual dysfunction, while age was a risk factor for urinary dysfunction.
authors.affiliation: Department of surgery, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi, 470-1192, Japan. sozeki@fujita-hu.ac.jp.
authors.forename: Shinji
authors.initials: S
authors.lastname: Ozeki
authors.affiliation: Department of surgery, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi, 470-1192, Japan.
authors.forename: Kotaro
authors.initials: K
authors.lastname: Maeda
authors.affiliation: Department of surgery, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi, 470-1192, Japan.
authors.forename: Tsunekazu
authors.initials: T
authors.lastname: Hanai
authors.affiliation: Department of surgery, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi, 470-1192, Japan.
authors.forename: Koji
authors.initials: K
authors.lastname: Masumori
authors.affiliation: Department of surgery, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi, 470-1192, Japan.
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Katsuno
authors.affiliation: Division of Medical Statistics, Fujita Health University, Toyoake, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Takahashi
mesh_terms: D000368:Aged; D000375:Aging; D013505:Digestive System Surgical Procedures / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010410:Penile Erection; D011183:Postoperative Complications; D011446:Prospective Studies; D012004:Rectal Neoplasms / Q000503:physiopathology / Q000601:surgery*; D012007:Rectum / Q000601:surgery*; D012307:Risk Factors; D065287:Robotic Surgical Procedures; D012735:Sexual Dysfunction, Physiological; D011795:Surveys and Questionnaires; D014554:Urination
keywords: Rectal cancer; Robotic surgery; Sexual function; Urinary function