# A client was burned at 0800. The prescribed plan is 4,800 mL of lactated Ringer's over 24 hours, with half delivered during the first 8 hours after injury. At 1200, the cumulative volume is shown. No other fluids have been given. Click the projected line that reaches the prescribed 8-hour target if continued at the same rate.

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=581188&lang=en  
> language: en  
> subject: Pharmacological and Parenteral Therapies  
> category: PPT

## Question

A client was burned at 0800. The prescribed plan is 4,800 mL of lactated Ringer's over 24 hours, with half delivered during the first 8 hours after injury. At 1200, the cumulative volume is shown. No other fluids have been given. Click the projected line that reaches the prescribed 8-hour target if continued at the same rate.

![](https://mymerci.kr/data/nclex/hotspot/regen_20260908_2350/HSR525.svg)

## Explanation

Line B adds900mL from1200 to1400, a rate of450mL/h. Half of4800mL is2400mL by1600. After subtracting the600mL already delivered,1800mL remains for4hours:450mL/h.

## In-depth explanation

Quick answer
B: continue at450mL/h under the stated prescription.
Why this is the best choice
The eight-hour clock begins at injury0800, not arrival1200. The target at1600 is2400mL. Subtract600mL already delivered, then divide1800mL by the remaining4hours. The graph requires reading900mL delivered over2hours, not treating cumulative1500mL as the interval amount.
Clinical picture
This is an explicitly prescribed teaching scenario. Actual burn resuscitation requires reassessment and titration to clinical response; the plotted plan does not replace bedside monitoring.
Memory hook
Injury clock; subtract fluid already given; divide by time still available.
Decision rule
Reconcile both elapsed time and prior fluid before selecting an ongoing infusion trajectory.
Why the other regions do not fit
A represents300mL/h and reaches1800mL total by1600, below the prescription. C represents600mL/h and reaches3000mL. D represents750mL/h and reaches3600mL. C and D overdeliver relative to the stated target.
**Sources**
- Burn resuscitation is time-dependent; dose and timing in this fictional item are explicitly prescribed.

## Key concepts

- **Cumulative volume** — Total fluid delivered up to a time, including earlier treatment.
- **Infusion trajectory** — The slope of cumulative volume against time equals the delivery rate.

## Related questions

- [A nurse is programming a high-alert IV medication on a smart infusion pump. Which actions …](https://mymerci.kr/pages/nclex_q.php?qn_id=372863&lang=en)
- [A patient has a serum potassium of 2.8 mEq/L and a new order for IV potassium chloride 40 …](https://mymerci.kr/pages/nclex_q.php?qn_id=373128&lang=en)
- [A patient on chronic phenytoin for seizure disorder reports new diplopia and unsteady gait…](https://mymerci.kr/pages/nclex_q.php?qn_id=373129&lang=en)
- [A patient on day 2 of total parenteral nutrition (TPN) has a capillary glucose of 248 mg/d…](https://mymerci.kr/pages/nclex_q.php?qn_id=373881&lang=en)
- [A nurse is teaching a patient newly started on metoprolol 25 mg twice daily for hypertensi…](https://mymerci.kr/pages/nclex_q.php?qn_id=374879&lang=en)
- [A patient post-radical cystectomy with ileal conduit urinary diversion is being taught uro…](https://mymerci.kr/pages/nclex_q.php?qn_id=374924&lang=en)
- [A nurse is teaching a patient discharged on oral potassium chloride (extended-release tabl…](https://mymerci.kr/pages/nclex_q.php?qn_id=374939&lang=en)
- [A 72-year-old on chronic warfarin for atrial fibrillation comes for routine follow-up. Aft…](https://mymerci.kr/pages/nclex_q.php?qn_id=374949&lang=en)

## Read in another language

- [en](https://mymerci.kr/pages/nclex_q.php?qn_id=581188&lang=en)
- [ko](https://mymerci.kr/pages/nclex_q.php?qn_id=581188&lang=ko)
- [ja](https://mymerci.kr/pages/nclex_q.php?qn_id=581188&lang=ja)
- [zh-TW](https://mymerci.kr/pages/nclex_q.php?qn_id=581188&lang=zh-tw)
- [vi](https://mymerci.kr/pages/nclex_q.php?qn_id=581188&lang=vi)

---

More free questions: [NCLEX-RN Practice](https://mymerci.kr/pages/nclex_bank.php?lang=en)

_For study reference only. Always follow current clinical guidelines and your institution’s protocols._