# A 7-year-old child is scheduled for cardiac catheterization to evaluate a suspected ventricular septal defect. Which nursing intervention is most important during the pre-procedure preparation?

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=541975  
> language: ko  
> subject: Child Health

## 문제

A 7-year-old child is scheduled for cardiac catheterization to evaluate a suspected ventricular septal defect. Which nursing intervention is most important during the pre-procedure preparation?

## 보기

1. Administer prophylactic antibiotics as ordered
2. Obtain baseline vital signs and document allergies
3. Assess peripheral pulses **✔ 정답**
4. Maintain oral intake restriction for 6-8 hours before the procedure

**정답: 3**

## 해설

Assessing bilateral pedal pulses is critical pre-procedure to establish a baseline for detecting vascular complications like thrombosis or occlusion. Other interventions are routine but less directly related to preventing serious procedural risks.

## 심화 해설

Clinical Judgment
This question assesses clinical judgment in identifying the most important nursing intervention before a pediatric cardiac catheterization. The core lies in obtaining baseline data to prevent and monitor for the procedure's specific risks (vascular complications). Cardiac catheterization is an invasive procedure where a catheter is inserted through the femoral artery, carrying a high risk of thrombosis, embolism, and vascular damage. Especially in children with small blood vessels, these complications can rapidly progress to limb ischemia. Therefore, **before** the procedure, Notify HCP! assessing and **marking bilateral dorsalis pedis pulses** is an essential step that creates a critical baseline for immediately verifying vascular patency by comparing pulses post-procedure. While other options are important, this is the most crucial intervention for managing the direct and immediate risks of the procedure.

Memory Tip
**P**re-cath **P**ulse **P**rotocol: Before cardiac catheterization, always **P**alpate the **P**edal Pulse and mark it with a **P**en! Remember: "Before the cath, check the foot path."

KR vs US
While pulse assessment before and after cardiac catheterization is also considered important in Korea, NGN/US exams tend to clearly distinguish this as the 'Most Important' priority intervention. In Korean practice, 'checking NPO status' or 'measuring baseline vital signs' are also heavily emphasized, but the US approach places more weight on a targeted intervention that directly contributes to preventing complications.

## 임상 시나리오

Clinical Practice Guide
Pre-catheterization nursing care for pediatric cardiac catheterization is systematically performed as follows:
1.  **Pulse Assessment and Marking**: Before the procedure, you must palpate bilateral femoral, popliteal, dorsalis pedis, and posterior tibial pulses, and mark the exact locations with a pen. Also record skin color, temperature, and capillary refill time.
2.  **NPO Compliance**: Generally, keep the patient NPO for clear liquids up to 2 hours before the procedure, breast milk up to 4 hours before, and solids/formula for 6-8 hours before. This is to reduce the risk of aspiration.
3.  **Baseline Data Collection**: Check and record vital signs, weight (for medication dosage calculation), allergies (especially iodine/contrast media, latex), and recent medication history (particularly anticoagulants).
4.  **Education and Emotional Support**: Explain the procedure in a developmentally appropriate way, and reassure the child and caregivers.

Caution
In SATA (Select All That Apply) questions, if "nursing interventions before cardiac catheterization" appears, 'pulse assessment and marking', 'NPO verification', 'recording baseline vital signs and allergies', and 'emotional preparation' can all be correct answers. However, in a single-choice "Most Important" question, 'pulse assessment and marking,' which is directly related to monitoring for vascular complications, is always the correct answer. 'Prophylactic antibiotic administration' is **not routine** for most diagnostic cardiac catheterizations.

## 핵심 개념

- **Cardiac Catheterization** — Cardiac catheterization. A diagnostic or therapeutic procedure in which a catheter is inserted through a blood vessel into the heart to perform angiography, pressure measurements, evaluation of cardiac structures, etc.
- **Ventricular Septal Defect** — Ventricular septal defect. A congenital heart disease where there is a hole in the wall (septum) that separates the left and right ventricles.
- **Dorsalis Pedis Pulse** — Dorsalis pedis pulse. The arterial pulse palpated on the dorsum of the foot, an important indicator for assessing blood flow status in the lower extremities.
- **Femoral Artery** — Femoral artery. A major artery passing through the groin area, and the most common catheter insertion route during cardiac catheterization.
- **Limb Ischemia** — Limb ischemia. A condition where arterial blood flow is blocked, leading to insufficient oxygen and nutrient supply to the tissues of the affected limb. A serious complication that can occur after cardiac catheterization due to thrombosis or other causes.

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