Investigation of microtrauma after sexual intercourse.

An investigation was carried out to determine whether colposcopic examination would be valuable in documenting vaginal intercourse. A prospective study was conducted on 18 volunteers, each of whom was examined after 72 hours of sexual abstinence and again within 6 hours after vaginal intercourse. Each of two examinations consisted of a colposcopic examination of the vaginal mucosa before and after staining with Lugol's solution to maximize the possibility of finding trauma. Positive colposcopic findings were found in 61.1% of patients after consensual vaginal intercourse as compared with 11.1% of patients after abstinence (p less than 0.01).