[Comparative study of genital tract infection in patients with tubal pregnancy]

To investigate the effects of genital tract ureaplasma urealyticum (UU), chlamydia trachomatis (CT) and cytomegalovirus (CMV) infection on tubal pregnancy.

One hundred and twenty eight women with tubal pregnancy (study group) and 50 women with ovarian cysts and without tubal pregnancy (control group) were recruited in this study. Cervical secretion and salpinx tissue samples were collected to detect UU, CT and CMV DNA using PCR.

(1) UU DNA was detected in cervical secretions from 56 (43.8%) and 10 (20.0%) women in the study group and control group, respectively. In salpinx tissue specimens, it was detected from 48 (37.5%) and 5 (10.0%) women in the study and the control group, respectively. Both of the differences between the study and control groups were very significant statistically (P < 0.01). (2) CT DNA was detected in cervical secretions from 35 (27.3%) and 5 (10.0%) women in the study and control group, respectively. In salpinx tissue specimens, it was detected from 34 (26.6%) and 3 (6.0%) women in the study group and control group, respectively. Both the differences between the two groups were significant (P < 0.05). (3) CMV DNA was detected in cervical secretions from 21 (16.4%) and 3 (6.0%) women in the study group and control group, respectively. In tubal tissue specimens, it was detected from 25 (19.5%) and 2 (4.0%) women in the study group and control group, respectively. Both the differences between the two groups were significant (P < 0.05). (4) Pelvic adhesion occurred in 70.6% women with UU DNA positive, 77.3% women with CT DNA positive, and 16.7% women with CMV DNA positive. While it occurred in 13.3% of women without any of three DNAs detected.

Genital tract infections of UU, CT and CMV in women with tubal pregnancy were significantly more common than in those without tubal pregnancy. UU, CT and CMV infection may be associated with an increased incidence of tubal pregnancy. Pathological change in genital tract caused by UU and CT infection may be more severe than that by CMV infection.