# 一位兒童體重 18.4 kg。醫囑為某藥物 25 mg/kg。現有藥物濃度為 100 mg/mL。護理師應給予多少 mL？答案請記錄至小數點後一位。僅在計算最後才進行四捨五入。

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=603818&lang=zh-tw  
> language: zh-TW  
> subject: Medication Administration  
> category: PPT

## 題目

一位兒童體重 18.4 kg。醫囑為某藥物 25 mg/kg。現有藥物濃度為 100 mg/mL。護理師應給予多少 mL？答案請記錄至小數點後一位。僅在計算最後才進行四捨五入。

Record your answer using one decimal place.

mL

Enter the number only. The unit is already shown. Round only at the end of the calculation.

Calculator

0

C⌫÷×
789−
456+
123=
0.Use rounded result

## 解析

首先計算醫囑劑量：25 mg/kg × 18.4 kg = 460 mg。再除以濃度：460 mg ÷ 100 mg/mL = 4.6 mL。

## 深入解析

快速解答
4.6 mL。
解題設定
先計算總毫克數，再利用提供的濃度將毫克換算為毫升。
計算過程
25 × 18.4 = 460 mg；460 ÷ 100 = 4.6 mL。中間步驟不需要四捨五入。
**參考來源**
- NCSBN — NCLEX Frequently Asked Questions: Calculation Items

- NCSBN — Prepare for the NCLEX

## 重要概念

- **Weight-based dose** — 根據病人體重（公斤）計算出的劑量。
- **Concentration** — 每毫升中所含的藥量。

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