Sexual behavior after prostatectomy was observed in 90 couples, with a follow-up of 3-6 years. Retropubic prostatectomy was performed on 53 patients (58.7%), transvesical prostatectomy on 12 patients (13.7%), and transurethral prostatectomy on 25 patients (27.7%). In order to have a reliable figure of the sexual behavior after surgery, all the couples underwent personal interviews separately before and 3-6 years after surgery. The interview included 4 main subjects: erection allowing sexual intercourse; antegrade ejaculation; orgasm, and libido. The separate identical double interviews were performed in order to achieve a high reliability in answer to sexual performance, this being the main unsolved question in previous studies. The results of the interviews were assessed by a computer-processing program and statistically analyzed. Our results imply that prostatectomy has an unfavorable influence on sexual activity: 33% of the potent preoperative patients became impotent after surgery.
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