# Situation: At the family planning clinic of a district hospital, the nurse counsels women and couples who want to space their children or have completed their families. A 28-year-old woman takes combined oral contraceptive pills containing 30 mcg of ethinyl estradiol. She forgot the pills for days 9, 10, and 11 of her pack and remembered on the morning of day 12. What should the nurse advise?

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> subject: Nursing Practice II — Maternal and Child Health Nursing

## 문제

Situation: At the family planning clinic of a district hospital, the nurse counsels women and couples who want to space their children or have completed their families.

A 28-year-old woman takes combined oral contraceptive pills containing 30 mcg of ethinyl estradiol. She forgot the pills for days 9, 10, and 11 of her pack and remembered on the morning of day 12. What should the nurse advise?

## 보기

1. Take one missed pill now and continue daily with no backup method
2. Take all three missed pills now and continue with no backup method
3. Stop this pack, use condoms, and restart pills at the next period
4. Take one missed pill now and use condoms for the next 7 days **✔ 정답**

**정답: 4**

## 해설

When three combined pills are missed, ovulation may no longer be reliably suppressed. She should take one missed pill now together with today's pill, continue one pill daily, and use condoms or avoid intercourse until she has taken hormonal pills for 7 days in a row. Because the missed pills were in the second week, she does not need to skip the hormone-free week.

## 심화 해설

Clinical context The question describes a 28-year-old woman using a combined oral contraceptive (COC) with 30 mcg ethinyl estradiol. She missed pills on days 9, 10, and 11 of her pack and remembered on the morning of day 12. This places the missed pills in the second week of the cycle, which is clinically relevant because the hormone-free interval is still far enough away that emergency contraception is not routinely required, but the duration of missed pills is long enough to raise concern about ovulation.

Why three missed pills matter Combined oral contraceptives suppress ovulation primarily through the progestin component, with ethinyl estradiol contributing to cycle control and backup suppression. When pills are missed, the pituitary begins to recover gonadotropin secretion, and follicular development may resume. The critical threshold is generally considered to be 7 hormone-free days. Missing 3 consecutive active pills creates a gap that can approach this threshold, especially when the missed pills occur close to the hormone-free interval. After three consecutive missed COCs, ovulation can no longer be assumed to be reliably suppressed, so a backup barrier method is indicated.

Applying the missed-pill algorithm For three or more missed active pills in the second week, the recommended management is to take the most recent missed pill as soon as possible, discard the other missed pills, and continue taking one pill daily at the usual time. Because the missed pills occurred in the second week, the woman does not need to skip the hormone-free week or use emergency contraception, provided she has taken hormonal pills for 7 consecutive days before that interval. The backup method—condoms or abstinence—should be used until she has taken active pills for 7 days in a row. This aligns with the evidence-based guidance that the risk of ovulation is highest when the pill-free interval is extended beyond 7 days, and that resuming active pills for a full week restores adequate suppression.

| Missed pill scenario | Action | Backup method | Hormone-free week |
| --- | --- | --- | --- |
| 1 missed pill (24–48 hr late) | Take missed pill now, continue pack | Not needed | Keep as scheduled |
| 2 missed pills in week 1 or 2 | Take most recent missed pill, continue pack | Condoms for 7 days | Keep as scheduled |
| 3+ missed pills in week 2 | Take most recent missed pill, continue pack | Condoms for 7 days | Keep as scheduled |
| 3+ missed pills in week 3 | Take most recent missed pill, continue pack; skip hormone-free week | Condoms for 7 days | Skip or shorten |

Watch out! Taking all three missed pills at once is not recommended because it increases the risk of nausea and breakthrough bleeding without providing faster ovarian suppression. The goal is to re-establish a steady daily hormone intake, not to “catch up” all at once.

Key point! The location of the missed pills within the pack determines whether the hormone-free week must be adjusted. Missed pills in week 2 do not require skipping the hormone-free week; missed pills in week 3 do, because the hormone-free interval would otherwise be extended beyond 7 days [1][2].

Why option 4 is correct Option 4 instructs the woman to take one missed pill now and use condoms for the next 7 days. This matches the guideline-based recommendation: take the most recent missed pill immediately, continue daily dosing, and add a barrier method until 7 consecutive days of active pills have been taken. Options 1 and 2 omit the backup method, which is unsafe after three missed pills. Option 3 advises stopping the pack and restarting at the next period, which is unnecessary for second-week missed pills and would needlessly interrupt contraception [1][2].References (research sources)

- [1]Missed hormonal contraceptives: new recommendations.GuidelineGuilbert E, Black A, Dunn S, Senikas V, MEDICAL EXPERTS IN FAMILY PLANNING OF THE NATIONAL INSTITUTE OF PUBLIC HEALTH OF QUEBEC, SOCIAL AND SEXUAL ISSUES COMMITTEE (2008) · DOI: 10.1016/S1701-2163(16)33001-8

- [2]Faculty statement from the CEU on a new publication: WHO Selected Practice Recommendations for Contraceptive Use Update. Missed pills: new recommendations.GuidelineFaculty of Family Planning and Reproductive Health Care Clinical Effectiveness Unit (2005) · DOI: 10.1783/1471189053629572

## 임상 시나리오

Missed COC Pills: Week 2 ManagementThree or more missed pills in the second week
When 3 or more active pills are missed in the second week, ovulation may no longer be reliably suppressed. The woman should take the most recent missed pill now, discard the other missed pills, and continue one pill daily at the usual time.

A backup barrier method such as condoms is required until she has taken hormonal pills for 7 consecutive days. Because the missed pills were in the second week, she does not need to skip the hormone-free week.

CautionDo not take all missed pills at once. Emergency contraception is not routinely needed for second-week misses, but assess individual risk if unprotected intercourse occurred.

## 핵심 개념

- **Combined oral contraceptive (COC)** — A birth control pill containing both estrogen and progestin that suppresses ovulation.
- **Hormone-free interval** — The pill-free week in a COC pack during which withdrawal bleeding occurs.
- **Backup contraception** — A barrier method such as condoms used temporarily when pill adherence is uncertain.
- **Ovulation suppression** — The primary mechanism of COCs, achieved mainly by the progestin component.
- **Missed pill algorithm** — A guideline for managing missed COC pills based on the number missed and cycle week.

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