Updated July 2026 · 7 min read

Adrenal Crisis for ICU Nurses 2026 — Shock That Only Steroids Will Fix

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Adrenal crisis is what happens when the body needs cortisol to survive a stress and cannot produce it. The result is shock — but a shock that will not respond to fluids and pressors the way you expect, because the missing ingredient is a hormone, not volume or vascular tone. It shows up in patients with known adrenal insufficiency who got sick, in patients on long-term steroids whose dose was stopped or not stress-adjusted, and occasionally as the first presentation of a failing adrenal gland. The treatment is simple, cheap, and lifesaving, and the single most important nursing insight is that you give it on suspicion, before any confirmatory lab comes back.

Why it looks like sepsis that won't turn around

Cortisol is permissive for vascular tone: without it, the vessels do not respond normally to catecholamines, so blood pressure sags despite fluids and escalating norepinephrine. That is why adrenal crisis so often masquerades as, or hides inside, septic shock — and why "shock that will not come off pressors" should make you ask about the adrenals. The electrolyte fingerprint helps: in primary adrenal insufficiency the loss of aldosterone as well as cortisol produces the classic hyponatremia with hyperkalemia, alongside hypoglycemia from the lost gluconeogenic effect of cortisol.

Treat first, confirm later

Fluids run alongside: isotonic crystalloid to refill the depleted intravascular space, with dextrose added because hypoglycemia is common and the patient cannot generate glucose normally. Correct the hyperkalemia as needed, but often it resolves as cortisol and volume are restored. Then find the trigger — infection is the classic one, but also surgery, trauma, missed steroid doses, or a new drug that accelerates steroid metabolism.

The steroid-history question every ICU nurse should ask

The most preventable adrenal crises come from patients on chronic glucocorticoids whose axis is suppressed. If someone has taken prednisone or an equivalent for weeks to months, their own adrenal production is switched off, and any acute stress — an operation, a pneumonia, a GI bug that stops them keeping pills down — can tip them into crisis if their dose is not increased. This is the basis of sick-day / stress dosing: patients on chronic steroids need more, not less, when they are seriously ill, and abruptly holding steroids in an inpatient is a classic iatrogenic cause. Whenever you admit or hand off a patient, knowing whether they are steroid-dependent is a safety issue, not a footnote.

The nursing bottom line

Adrenal crisis is a shock you fix with a hormone, and the whole game is thinking of it early. When hypotension resists fluids and pressors, especially with low sodium, high potassium, low glucose, and a steroid or adrenal history, get hydrocortisone in without waiting on the lab, resuscitate with dextrose-containing fluids, and chase the trigger. And carry forward the prevention lesson: the steroid-dependent patient needs stress dosing when they are sick, and the nurse who flags a held home steroid may be preventing the next crisis.

Related: Hydrocortisone in septic shock · Thyroid storm · Myxedema coma · Vasopressors

Educational content for licensed clinicians. Always follow your facility's protocol and provider orders. Not medical advice.