Hysteroscopic evaluation of tubal peristaltic dysfunction in unexplained infertility.

It has been realised that rhythmic peristalsis of the ostia and tubes can be observed during hysteroscopy. The aim of this study was to examine the presence of tubal peristaltic dysfunction in unexplained infertility (UI). Hysteroscopy was performed in 35 women with UI and in 37 healthy fertile women. Bilateral tubal peristalses were assessed hysteroscopically by the observation of methylene blue injection and its transport to the Fallopian tubes. Tubal patency was evaluated with laparoscopic chromopertubation. Two women in control group (6.67%) and eight women in UI group (30.77%) had no tubal peristalsis, at least one tube with normal tubal patency. The difference was statistically significant (p = .019). Tubal peristaltic dysfunction may be a hidden cause of subfertility in women with bilateral patent Fallopian tubes. There is a definite need for larger trials to identify tubal peristaltic dysfunction as a cause of UI. Impact statement What is already known on this subject? Unexplained infertility has no identified pathophysiologic basis. It has been realised that rhythmic peristalsis of the ostia and tubes can be observed during hysteroscopy. What do the results of this study add? Tubal peristaltic dysfunction was detected in two tubes (3.70%) in a control group and nine tubes (19.57%) in women with unexplained infertility, when the tubes were patent. The difference was statistically significant (p = .012). What are the implications of these findings for clinical practice and/or further research? In cases of bilateral patent Fallopian tubes such as in unexplained infertility, tubal peristaltic dysfunction may be a hidden additional cause of subfertility.