Match Contraceptives with Action

Contraceptives	Action
A. Mini Pill	I. Inhibits ovulation
B. IUCD	II. Prevents semen release into vagina
C. Combined oral contraceptive pills	III. Makes cervical mucous thick & viscous & prevents sperm penetration
D. Condom	IV. Causes biochemical & histological changes in the endometrium

1. A

   A-I, B-II, C-III, D-IV

2. B

   A-III, B-IV, C-I, D-II

3. C

   A-I, B-II, C-IV, D-III

4. D

   A-III, B-II, C-I, D-IV

Appeared in: MNS 2024

Explanation

• The question requires matching different contraceptive methods with their primary mechanism of action.
• The correct combination is A-III, B-IV, C-I, D-II.
• Mini Pills (progestin-only) primarily thicken cervical mucus, creating a barrier for sperm.
• IUCDs induce a local inflammatory response in the endometrium, making it unsuitable for implantation.
• Combined Oral Contraceptives use hormones to suppress the pituitary gland, thereby inhibiting ovulation.
• Condoms are a physical barrier method that prevents semen from entering the vagina.

Why Other Options Were Wrong

• Option A: This option incorrectly matches Mini Pill with inhibiting ovulation (A-I) and Combined pills with thickening mucus (C-III). While COCPs do thicken mucus, their primary action is inhibiting ovulation. Mini pills' primary action is thickening mucus.
• Option C: This option incorrectly matches IUCD with preventing semen release (B-II) and Condom with making mucus thick (D-III). A condom is a physical barrier, and an IUCD works within the uterus.
• Option D: This option incorrectly matches IUCD with preventing semen release (B-II) and Condom with causing endometrial changes (D-IV). A condom is an external barrier, and an IUCD acts internally within the uterus.

Related Visual

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Mechanism of Action of Contraceptives as background academic context rather than a clinical decision trigger.
• Accurate knowledge of contraceptive mechanisms is crucial for patient education and counseling, enabling nurses to help patients choose the most suitable method based on their health, lifestyle, and preferences.
• Understanding the differences is vital for safety. For example, recommending a combined oral contraceptive (which inhibits ovulation) to a woman with a history of blood clots is contraindicated, whereas a progestin-only method might be safer.
• What if a patient is breastfeeding? The nurse should know that combined oral contraceptives are generally avoided because estrogen can reduce milk supply. A progestin-only method like the Mini Pill or an IUCD would be a more appropriate recommendation.

How to Approach the Question

• This is a 'Match the Following' question, a type of recall question.
• First, read the two columns to understand the items to be matched: contraceptive methods and their actions.
• Address each contraceptive method one by one and recall its primary mechanism of action.
• A. Mini Pill: This is a progestin-only pill. Its main effect is thickening cervical mucus. Match A with III.
• B. IUCD: This device is placed in the uterus and causes a local reaction. Match B with IV.
• C. Combined Pills: These contain estrogen and progestin and primarily work by stopping ovulation. Match C with I.

Concept Tested & Keywords

• Concept Tested: Mechanism of Action of Contraceptives
• Stem keywords: Contraceptives, Action, Mini Pill, IUCD, Combined oral contraceptive pills, Condom
• Lead-in keywords: Match
• Negative lead-in flag: false

Question ID

QtxpCnJik3GE8qa8Eqo4j

Copy ID

Reference Book

E6 Physiology Essentials Sembulingam 10e Part 2 p. 154-156

E6 Medicine Harrison 22e Part 2 p. 1057-1059