What can I do if my husband had a vasectomy done is it 100%?

Information. There have been rare cases of spontaneous reopenig of the procedure. In order to ensure 100% success, periodic sperm counts should be done perhas every other year. It depends on how the procedure was done. Whe a segment of the vas deferens is removed it should be submitted to pathology for confirmation as the are some large veins that can be mistaken for the vas.