Measurement of peak intrauterine pressure does not distinguish between women with patent and blocked fallopian tubes and would not be clinically useful to verify occlusion following permanent contraception, a recent study concluded. The cross-sectional study used a small inline pressure sensor to continuously monitor intrauterine pressure during hysterosalpingogram (HSG) and enrolled women having HSGs for any indication. The primary outcome was the peak intrauterine pressure compared between women with bilateral tubal occlusion (BTO) and tubal patency (TP) as verified by HSG. Researchers found:
- Of 150 participants, 111 (74.0%) provided usable pressure readings; 98 (88.3%) had TP, and 13 (11.7%) had BTO.
- There was no difference in peak intrauterine pressure for those with TP compared to those with BTO.
- Among parous women, peak intrauterine pressure in those with BTO was higher but not significantly different from those with TP.
- In linear regression analysis, peak intrauterine pressure was not associated with age, body mass index, gravidity, or having 1 prior live birth.
Patil E, Thurmond A, Edelman A, et al. Pressure dynamics in the non-gravid uterus: Intrauterine pressure cannot confirm tubal occlusion after non-surgical permanent contraception. [Published online ahead of print July 4, 2017]. Contraception. doi:10.1016/j.contraception.2017.06.013.