# Situation: The public health nurse of a Rural Health Unit (RHU) makes home visits to registered families in a coastal barangay. At a health promotion visit, the nurse teaches a family's children handwashing with soap and water, then asks the 7-year-old to show it. He wets his hands, applies soap, rubs his palms together for about 5 seconds, rinses, and dries his hands on his shirt. Which evaluation is BEST?

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=627239  
> language: ko  
> subject: Nursing Practice I — Community Health Nursing

## 문제

Situation: The public health nurse of a Rural Health Unit (RHU) makes home visits to registered families in a coastal barangay.

At a health promotion visit, the nurse teaches a family's children handwashing with soap and water, then asks the 7-year-old to show it. He wets his hands, applies soap, rubs his palms together for about 5 seconds, rinses, and dries his hands on his shirt. Which evaluation is BEST?

## 보기

1. He needs coaching to scrub all surfaces longer and dry on a clean cloth **✔ 정답**
2. He has learned it, because he did the steps in the correct order
3. He needs the whole lesson repeated, as his demonstration had errors
4. He needs coaching on drying only, since rinsing removes the germs

**정답: 1**

## 해설

The return demonstration shows the correct order of steps but two errors: he rubbed only his palms for about 5 seconds instead of all surfaces for at least 20 seconds, and he dried his hands on a soiled shirt. The best evaluation identifies these specific gaps and coaches them at once, rather than accepting the skill or repeating the whole lesson.

## 심화 해설

The evaluation of a return demonstration requires the nurse to assess both the sequence of steps and the quality of each step. In this scenario, the 7-year-old child demonstrated the correct order—wetting, applying soap, rubbing, rinsing, and drying—but the execution contained two clinically significant gaps that prevent the skill from being considered mastered.

The child rubbed only the palms for approximately 5 seconds, whereas effective handwashing requires friction across all surfaces for at least 20 seconds. The palms are only one of several high-risk zones. The dorsum of the hands, interdigital spaces, fingertips, nail beds, and thumbs are frequently missed, and these areas harbor substantial microbial load. In community and school-based hygiene assessments, incomplete surface coverage is one of the most common technique failures observed during structured handwashing observations . The rationale is mechanical: soap does not kill all pathogens on contact; it lifts dirt, oils, and transient flora from the skin so that running water can carry them away. Without adequate friction time and surface coverage, the removal of microorganisms is incomplete.

The second error is the drying method. The child dried his hands on his shirt, which is unlikely to be a clean, single-use surface. Drying on a soiled or frequently reused cloth can recontaminate hands immediately after washing, negating much of the benefit of the handwashing itself. In school and community settings, the availability of clean drying materials is a recognized determinant of hand hygiene effectiveness . When clean towels or disposable paper are unavailable, air drying is preferable to using clothing that has been in contact with the environment.

Watch out! The correct order of steps does not equal correct performance. A return demonstration must be evaluated on both sequence and technique. Accepting the skill based on sequence alone would miss the two errors that directly reduce the protective effect of handwashing.

Key point! The best evaluation identifies the specific gaps—duration and surface coverage, plus drying method—and provides targeted coaching. Repeating the entire lesson is unnecessary because the child already understands the general sequence. Coaching on drying alone is insufficient because the rubbing step was also inadequate.

The public health context reinforces this approach. Handwashing promotion is an effective strategy for reducing diarrheal disease in children, but the benefit depends on proper technique and consistent practice . School-based hand hygiene interventions show measurable reductions in infectious disease transmission when technique is addressed as part of the intervention . Teaching children to wash correctly requires more than verbal instruction; it requires demonstration, practice, and corrective feedback on the specific components of the skill . In this scenario, the nurse’s best action is to acknowledge what the child did correctly and then coach the two deficient areas immediately, using demonstration and guided practice to build the correct motor pattern.

| Evaluation component | Observed performance | Standard | Judgment |
| --- | --- | --- | --- |
| Sequence of steps | Wet, soap, rub, rinse, dry | Wet, soap, rub all surfaces, rinse, dry with clean material | Correct order |
| Rubbing duration | 5 seconds | At least 20 seconds | Needs coaching |
| Surface coverage | Palms only | Palms, dorsum, interdigital spaces, fingertips, thumbs, nail beds | Needs coaching |
| Drying method | Shirt | Clean cloth or disposable paper; air dry if unavailable | Needs coaching |

The correct answer is option 1. The child needs coaching to scrub all surfaces for a longer duration and to dry with a clean material. This evaluation is specific, accurate, and actionable, which is the standard for effective health teaching in community settings.

## 임상 시나리오

Evaluating Handwashing Return DemonstrationCoaching a 7-year-old on full-surface scrubbing and clean drying
Assess both sequence and quality of each step. Correct order alone does not mean the skill is mastered.

Effective handwashing requires friction across all surfaces for at least 20 seconds. Commonly missed areas include the dorsum, interdigital spaces, fingertips, nail beds, and thumbs.

Drying on a soiled shirt can cause immediate recontamination. Use a clean cloth or single-use towel.

CautionDo not repeat the entire lesson when only specific technique gaps exist. Provide targeted coaching on scrubbing all surfaces longer and drying on a clean cloth.

## 핵심 개념

- **Return demonstration** — A teaching method where the learner performs a skill back to the educator to verify competence and identify gaps.
- **Handwashing duration** — Effective handwashing requires friction across all surfaces for at least 20 seconds.
- **Transient flora** — Microorganisms acquired on the skin through contact that are easily removed by proper handwashing.
- **Recontamination** — Transfer of microorganisms back onto clean hands from a contaminated surface such as a soiled cloth.
- **Interdigital spaces** — Areas between the fingers that are frequently missed during handwashing and harbor microbial load.

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