A 35-year-old nulliparous woman presents to the gynaecology clinic requesting long-acting reversible contraception. She has a 10-year history of heavy menstrual bleeding (HMB) and severe dysmenorrhea, for which she has been managed with NSAIDs. She has no contraindications to hormonal contraception and no history of pelvic infection. Her haemoglobin is 9.2 g/dL (iron-deficiency anaemia secondary to HMB). She is counselled about copper IUCD versus LNG-IUD. Which IUCD is most appropriate, and why?

Explanation

## Clinical Context: HMB, Dysmenorrhea, and Anaemia in a Nulliparous Woman ### The Problem - **Heavy menstrual bleeding (HMB):** 10-year history; causing iron-deficiency anaemia (Hb 9.2 g/dL) - **Dysmenorrhea:** Severe; managed with NSAIDs - **Nulliparity:** No previous pregnancies; IUCD insertion is still appropriate but requires counselling on expulsion risk - **Anaemia:** Secondary to chronic blood loss; needs intervention to reduce menstrual bleeding ### Why LNG-IUD Is the Optimal Choice **Key Point:** LNG-IUD is the gold-standard LARC for women with HMB and dysmenorrhea because: | Feature | LNG-IUD | Copper IUCD | |---------|---------|-------------| | **Menstrual bleeding** | ↓ 50–90%; amenorrhea in 20% | ↑ 20–30% increase | | **Dysmenorrhea** | ↓ Significant improvement | ↑ Often worsens | | **Anaemia correction** | Yes (reduces blood loss) | No; may worsen | | **Efficacy** | 0.2 per 100 woman-years | 0.8 per 100 woman-years | | **Nulliparity** | Safe; expulsion ~3–5% | Safe; expulsion ~3–5% | | **Return to fertility** | Immediate upon removal | Immediate upon removal | **Clinical Pearl:** In a nulliparous woman with HMB and anaemia, LNG-IUD is therapeutic AND contraceptive. It directly addresses her bleeding disorder while providing superior contraceptive efficacy. ### Addressing Nulliparity Concerns - **Expulsion rates:** Nulliparous women have slightly higher expulsion rates (~3–5%) compared to multiparous women (~1–2%), but this applies equally to both copper and LNG IUCDs - **Insertion difficulty:** May be slightly more difficult due to smaller uterine cavity, but not a contraindication - **Efficacy:** Both IUCDs are highly effective in nulliparous women; LNG-IUD remains superior (0.2 vs 0.8 per 100 woman-years) **High-Yield:** Nulliparity is NOT a contraindication to IUCD insertion. The WHO and ACOG recommend IUCDs as first-line LARC for all women, including nulliparous women. ### Amenorrhea: A Feature, Not a Bug - **Amenorrhea rate:** Develops in 20% of LNG-IUD users by 1 year; 30–40% by 5 years - **Safety:** Amenorrhea is physiologically safe and often desired by women with HMB - **Reversibility:** Menses return within 1–3 months of removal - **Counselling:** Should be discussed, but is not a contraindication; many women view it as beneficial ## Why Option 1 Is Correct LNG-IUD is the most appropriate choice because it: 1. **Reduces menstrual bleeding** by 50–90%, directly addressing her HMB 2. **Improves dysmenorrhea** significantly 3. **Corrects anaemia** by reducing chronic blood loss 4. **Provides superior contraceptive efficacy** (0.2 vs 0.8 per 100 woman-years) 5. **Is safe in nulliparous women** with similar efficacy and expulsion rates as in multiparous women