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Pharmacological TherapiesAdrenal insufficiency → never stop

Hydrocortisone ReplacementNCLEX cheat sheet

Hydrocortisone replacement provides physiologic glucocorticoid (cortisol) for patients with adrenal insufficiency, such as Addison disease or after adrenalectomy.

21 key facts 5 practice questions Reviewed Oct 2026
The 1-minute sheetCinnaRN

Use

  • Addison disease, adrenal insuff
  • Replaces cortisol

Teach

  • NEVER abruptly stop → crisis
  • Stress dose: illness, surgery
  • Take w/ food, AM dosing

Monitor

  • Weight, BP, glucose
  • Wear medical alert bracelet

Report

  • Addisonian crisis: ↓BP, shock
  • Cushingoid: moon face, edema
  • Infection signs masked
Key takeaway

Replaces deficient cortisol in primary (Addison) or secondary adrenal insufficiency; therapy is lifelong.

Before you read

Test yourself first: 5 questions

Question 1 of 5

A nurse is teaching a client about hydrocortisone replacement therapy for adrenal insufficiency. Which information should the nurse emphasize?

What is hydrocortisone replacement?

Unlike high-dose anti-inflammatory steroid use, this is lifelong replacement that must never be stopped abruptly to avoid adrenal crisis. Doses must be increased ('stress dosing') during illness, surgery, or major stress because the body cannot mount its own cortisol response.

Key points to remember

  • Replaces deficient cortisol in primary (Addison) or secondary adrenal insufficiency; therapy is lifelong.
  • Must never be stopped abruptly because sudden withdrawal precipitates life-threatening adrenal (Addisonian) crisis.
  • Stress dosing: the dose must be increased during illness, infection, trauma, or surgery.
  • Often given to mimic the body's rhythm (larger dose in the morning, smaller in the afternoon).
  • Long-term or excess dosing causes Cushingoid effects: hyperglycemia, weight gain, infection risk, osteoporosis, and GI ulcers.

Nursing priorities

  1. Teach the patient never to stop the drug suddenly and to taper only under provider direction.
  2. Educate on stress dosing (sick-day rules) and ensure access to an emergency injectable hydrocortisone kit.
  3. Monitor for signs of adrenal crisis: hypotension, weakness, nausea, and hyperkalemia.
  4. Monitor blood glucose, weight, blood pressure, and signs of infection.

Labs & values

Serum sodium135-145 mEq/L (often low in adrenal insufficiency)
Serum potassium3.5-5.0 mEq/L (often high in adrenal insufficiency)
Fasting blood glucose70-99 mg/dL (may rise with steroids)
Morning serum cortisol used to assess adrenal function
135145mEq/L Normal

Patient teaching

  • Take steroids exactly as prescribed and never stop them abruptly.
  • Follow sick-day rules: increase the dose during illness, fever, or surgery as instructed.
  • Carry medical alert identification and an emergency hydrocortisone injection kit.
  • Take oral doses with food to reduce stomach upset and ulcer risk.
  • Report signs of infection, severe fatigue, dizziness, vomiting, or rapid weight change.

Red flags: report now

  • Adrenal crisis — severe hypotension, profound weakness, vomiting, and confusion; emergency, give IV hydrocortisone and fluids.
  • Abrupt discontinuation — never stop replacement steroids suddenly.
  • Signs of infection may be masked by steroids; fever or wound changes must be reported promptly.

References

Clinical references for this topic

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