Etonogestrel (ENG) implant is an effective method of contraception. The implant is designed to provide contraceptive efficacy for three years with a relatively quick return of fertility upon its removal. Dysfunctional uterine bleeding (DUB) is a common side effect of long acting progestins and is often the reason patients state for removal or discontinuation. A retrospective chart analysis was completed on 292 patients who chose to be on the ENG implant. Age of patients ranged from 10-29 years of age with the average age at implant being 17 years +/- 3 years. Patients retained implant for 1-68 months with the average use being 21.0 months +/- 15.5 months. Over the 69 month period, 158 patients had the complaint of DUB (54.1%) and 46 patients with DUB had their implants removed because DUB was unresolved upon treatment and/or follow up (15.6%). Therefore, is it import for clinicians to be aware of the likelihood of DUB with implant usage and for them to be able to provide appropriate pre and post insertion counseling and treatment to all of their patients.
Iddings, Anna and Omar, Hatim A., "Revisiting Menstrual Bleeding Patterns in Adolescents Using Etonogestrel (ENG) Implant" (2015). Pediatrics Faculty Publications. 172.