Table 1.

Causes of Reported Pregnancies

Reason Pregnancy Occurred	N	% of Total
Patient or physician noncompliance	30	47
Misread radiograph or HSG	18	28
Pregnant at time of placement	8	12.5
Prior device design	1	1.5
Other	7	11
Total	64

HSG, hysterosalpingogram.

Reprinted from Journal of Minimally Invasive Gynecology, Vol. 14, Levy B et al, A summary of reported pregnancies after hysteroscopic sterilization, pp. 271–274, Copyright 2007, with permission from Elsevier.¹⁰