A 30-year-old man underwent no-scalpel vasectomy 2 weeks ago. He asks when he can discontinue the backup contraceptive method he and his wife are using. The correct advice is:
- A After confirmation of azoospermia on semen analysis, usually about 12 weeks or 20 ejaculations after the procedure ✓
- B Immediately, since the vas deferens is occluded at surgery
- C After 6 weeks, once the surgical wound has fully healed
- D After 1 week of abstinence from intercourse
Correct answer: A. After confirmation of azoospermia on semen analysis, usually about 12 weeks or 20 ejaculations after the procedure
Explanation
Sperm already present distal to the ligated segment can still be ejaculated for weeks after vasectomy. Clearance requires either about 12 weeks or roughly 20 ejaculations, and contraception is stopped only after a semen analysis confirms azoospermia. Wound healing (option C) has no bearing on residual sperm, and immediate protection (option B) is wrong because recanalization and residual sperm both cause early failures.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.