Emergency contraception (EC) refers to methods used to prevent pregnancy after unprotected sexual intercourse, contraceptive failure, or sexual assault. It acts as a secondary form of birth control and does not protect against sexually transmitted infections. EC is intended for emergency situations only and should not replace regular, ongoing contraceptive methods.
Timing is the single most critical factor determining the success of emergency contraceptive pills.
Emergency contraceptive pills (ECPs) function primarily by delaying or inhibiting ovulation. They do not disrupt an established pregnancy.
| Type | Active Ingredient | Window of Effectiveness |
|---|---|---|
| Progestin-only | Levonorgestrel (1.5mg) | Up to 72 hours (3 days) |
| Selective Modulator | Ulipristal Acetate (30mg) | Up to 120 hours (5 days) |
| Combined Regimen | Yuzpe method (Multiple pills) | Up to 72 hours (3 days) |
The copper-bearing intrauterine device is the most effective form of emergency contraception available. When inserted within 120 hours of unprotected intercourse, it prevents fertilization by producing a spermicidal environment through copper ion release. An added clinical advantage is that it can remain in place to provide ongoing, highly effective contraception for years.
Before dispensing emergency contraception, the nurse must conduct a brief, focused clinical assessment. Inquire about the exact time of the unprotected intercourse and the date of the last menstrual period to rule out an existing pregnancy. Assess for contraindications, explain potential side effects such as nausea or irregular spotting, and counsel the client on starting a regular ongoing contraceptive method.
Emergency contraceptives are generally safe, but clients may experience temporary side effects like nausea, fatigue, headache, and lower abdominal pain. Menstrual irregularities, such as early or delayed bleeding, are common in the cycle following ingestion. There are virtually no medical conditions for which the risks of emergency pills outweigh the benefits, except for a known, confirmed pregnancy.
In Nigerian clinical practice, nurses frequently encounter cultural and religious barriers regarding emergency contraception. Many clients harbor misconceptions, believing EC causes permanent infertility, encourages promiscuity, or acts as an abortifacient. Nurses must provide non-judgmental, confidential education, dispel these myths with scientific facts, and ensure friendly access to reproductive health services.