Pediatric Emergencies Practice Test 2026 - Free Pediatric Emergency Practice Questions and Study Guide

In large burns, the priority is to replace the massive fluid shifts that occur after injury to prevent hypoperfusion and shock. The established approach uses the Parkland formula: 4 mL of Lactated Ringer's solution per kilogram of body weight per percent TBSA burned, administered over the first 24 hours. Deliver half of that volume in the first 8 hours from the time of burn, then the remaining half over the next 16 hours. This plan targets rapid resuscitation early on and is adjusted based on ongoing monitoring, especially urine output and overall perfusion.

Why this is the best choice: it provides a structured, evidence-based method for estimating the needed fluid to counteract capillary leak and fluid loss in major burns, uses Lactated Ringer's to avoid the potential acidosis from other crystalloids, and emphasizes the critical timing window in the first hours after injury.

Reasoning about the other options: giving only a small bolus or only maintenance fluids underestimates the total needs for a large burn; relying on a fixed 24-hour small volume misses the required early surge and timing; and claiming fluids aren’t needed unless hypotensive ignores the profound fluid shifts that occur even if blood pressure remains acceptable in the acute phase of burn injury.