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.
Hot Spot
Choose your responses, then check the answer.
Explanation
Line B adds900mL from1200 to1400, a rate of450mL/h. Half of4800mL is2400mL by1600. After subtracting the600mL already delivered,1800mL remains for4hours:450mL/h.
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.
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.