Hysteroscopic assessment of tubal patency: a prospective randomized comparison between the flow and Parryscope techniques

The primary aim of this study is to evaluate the relalibilty of (1.) the hysteroscopic visualization of a “tubal flow” and (2.) the “Parryscope technique” as compared to the gold standard, namely laparoscopic chromopertubation.
The data show that yysteroscopic prediction of Fallopian tube patency was possible in a statistically significant manner in both study groups (p< 0.05). The Parryscope® technique achieved higher sensitivity (90.6%, 95% CI: 61.7-98.4) and specificity (100%, 95% CI: 90.0-100.0) than the flow technique (sensitivity: 73.7%, 95% CI: 48.8-90.9 and specificity: 70.7%, 95% CI: 54.5-83.9).