Which of the following laboratory results would not be expected in the first 24 hours after a major burn injury? Select all that apply
1. Potassium level of 3.0 mEq/L
2. Hematocrit of 48%
3. Hemoglobin 19 g/dL
4. Sodium 148 mEq/L
Potassium level of 3.0 mEq/L
Rationale: Cell damage, which occurs due to the burn injury, causes the release of intracellular potassium, which causes hyperkalemia. Therefore, the potassium level is increased, not decreased, in the first 24 hours. It is normal to have an elevated hematocrit, hemoglobin, and sodium due to dehydration and hemoconcentration.
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