A 27 years old P2L2 patient is a lactating mother. Her baby is 18 months old now. She has irregular menses which are in the pattern on oligomenorrhoea. Which one is the most suitable contraceptive in this case? A.dmpa B.copper t C.coc pills D.condoms
Reading File
Finding Sources
Finding Sources
Finding Sources
Finding Sources
Reading File
Finding Sources
The answer is A. DMPA (Depot Medroxyprogesterone Acetate).
Explanation
Key Clinical Features in This Case
| Feature | Significance |
|---|---|
| P2L2, age 27 | Parous, needs reliable long-term contraception |
| Lactating mother | Estrogen-containing methods are relatively contraindicated (reduce milk supply) |
| Baby 18 months old | Lactational amenorrhea method (LAM) is no longer reliable (LAM works only up to 6 months + exclusive breastfeeding) |
| Oligomenorrhoea | Pre-existing irregular/infrequent cycles |
Why DMPA is the Best Choice
DMPA is a progestin-only injectable (150 mg IM every 3 months) and is the ideal pick here for several reasons:
-
Safe in lactation - Progestin-only methods (injectables, implants, mini-pills) do not affect breast milk quantity or quality, unlike combined estrogen-progestin pills. As confirmed in Berek & Novak's Gynecology: "Progestin-only OCs, implants, and injectable contraception do not affect milk quality or quantity."
-
Oligomenorrhoea is not a contraindication; it is actually a benefit - DMPA commonly causes amenorrhoea or reduced bleeding. In a patient who already has oligomenorrhoea, this side effect is acceptable and often welcomed.
-
High efficacy - DMPA has a failure rate of <1% with typical use, far superior to condoms.
-
Convenience - Only 4 injections per year; no daily compliance needed (unlike COC pills or mini-pills), which matters for a busy lactating mother.
Why the Other Options Are Less Suitable
| Option | Reason Against |
|---|---|
| B. Copper-T IUD | Effective and safe in lactation, but does NOT address the oligomenorrhoea pattern. Copper IUDs can increase bleeding/dysmenorrhoea, worsening menstrual irregularity. DMPA is preferred when the menstrual pattern is already irregular/sparse. |
| C. COC Pills | Combined estrogen-progestin pills are relatively contraindicated in lactating women - estrogen suppresses prolactin and can reduce milk production. Also do not suit a patient with oligomenorrhoea (cycles may remain suppressed). |
| D. Condoms | Provide no hormonal benefit, have higher failure rates (~15% typical use), and do nothing to regulate the menstrual pattern. Suitable as a backup but not the most suitable primary method here. |
Summary
In a lactating mother with oligomenorrhoea whose baby is >6 months old (LAM no longer reliable), DMPA is the single best contraceptive choice - it is estrogen-free (safe for breastfeeding), highly effective, requires only quarterly injections, and its tendency to produce amenorrhoea is a benefit rather than a side effect in this patient.
Answer: A. DMPA
- Berek & Novak's Gynecology, p. 714 (Contraception During Lactation)
This is a shared conversation. Sign in to Orris to start your own chat.