Purpose: to evaluate the importance of endometrial thickness measurement as an orienting factor for the clinical treatment of unruptured tubal pregnancy. Method: longitudinal observational study, in which the greatest measure of the endometrial thickness was evaluated in millimeters, in the uterine longitudinal axis, through transvaginal ultrasonography. Our study group included 181 patients, all of them respecting the utilization criteria for the clinical treatment (expectant or medicated with methotrexate). Through Student's t test we evaluated the difference between the average thickness of the cases who presented successful results with the treatment and the average of those who failed. Results: the average endometrial thickness of the patients who presented successful results with the medical treatment (31 cases) was 6.4 mm, while the average in the cases of failure was 11.5 mm. These results were significantly different. The average thickness of the successful group with expectant management (128 cases) was 9.0 mm, while the average of those who failed was 9.6 mm. These values were not statistically different. Conclusions: the greatest measure of the endometrial thickness of the uterine longitudinal axis through transvaginal ultrasonography proved to be valuable as a new orienting factor for the medical treatment of patients with a diagnosis of unruptured tubal pregnancy. It may become a useful and auxiliary tool for the recommendation of the use of methotrexate. On the other hand, thickness did not show to be useful as an orienting factor for establishing expectant management.
Ectopic pregnancy; Endometrial thickness; Ectopic pregnancy
