Key Concepts
Introduction
RN You prioritize airway/neuro protection, interpret trends (labs + vitals + ECG + I&O), implement orders for replacement/dialysis/diuretics, and reassess after each intervention. Items punish delay when ECG shows hyperkalemic progression or seizures with severe sodium disturbance. Classic forks: hypo vs hypernatremia management principles as taught, potassium replacement safety, calcium before insulin for hyperK with ECG changes when the stem follows that teaching pattern, fluid type in DKA, and overload after resuscitation. For NCLEX-RN (United States), questions rarely announce the topic in the first sentence. They hide it inside vitals, labs, and a short story. Your job is to name the clinical problem, justify why it matters now, and select the safest next step for the role you are given—before you let distractors pull you toward busywork or out-of-scope heroics. When two answers feel partly right, pick the one that closes risk first and matches your license in the stem. On the exam, writers often pair stable-sounding options with unstable data—notice the mismatch before you commit. If the stem names a license or role, reread that line; scope errors are...