Endocrine Nursing for the NCLEX-RN Exam

Common failure modes

These are the patterns that cause most candidates to lose marks on this topic. Recognising them in advance is half the work.

• !Confusing DKA (T1DM, hyperglycemia + ketosis + acidosis) with HHS (T2DM, severe hyperglycemia without ketosis)
• !Mismatching insulin types with onset/peak/duration (rapid: lispro, aspart, glulisine; long: glargine, detemir)
• !Treating thyroid storm too slowly — it is a true endocrine emergency requiring beta-blocker, PTU, and steroid
• !Holding metformin without considering contrast administration (must hold 48 hours after IV contrast)

Study tips

• 1Memorize the 15/15 rule for hypoglycemia: 15 g of fast carbs, recheck in 15 minutes, repeat if BG < 70.
• 2Drill insulin pharmacokinetics — match each insulin with onset, peak, duration. Tested every NCLEX.
• 3Know DKA management priorities: fluid resuscitation FIRST, then insulin (after K+ check); replace K+ before insulin starts shifting it intracellularly.
• 4Differentiate Addison (hypotension, hyperpigmentation, hyponatremia) from Cushing (HTN, central obesity, hypokalemia).

Sample NCLEX-RN Endocrine Nursing questions

These sample items mirror the format and difficulty of real NCLEX-RN questions. Practice with thousands more on the free Koydo question bank.

1. 1

   A client with T1DM presents with BG 480 mg/dL, pH 7.20, and serum K+ 5.8 mEq/L. What is the priority intervention?

   • AAdminister regular insulin IV bolus
   • BBegin 0.9% NaCl IV infusionCorrect
   • CAdminister sodium bicarbonate IV
   • DGive oral glucose tablets
   Why this answer?

   DKA management priority is fluid resuscitation first with 0.9% NaCl. Insulin is started after volume status improves and serum K+ is verified — insulin will drive K+ into cells and can precipitate hypokalemia if started too early. Bicarbonate is reserved for pH < 6.9.