What is the appropriate acute management for an Addison’s disease patient presenting with adrenal crisis (hypotension, hyponatremia, hypoglycemia)?

Acute Management of Addisonian Crisis

Immediately administer hydrocortisone 100 mg IV bolus and begin rapid infusion of 0.9% saline 1 liter over the first hour—do not delay treatment for diagnostic confirmation. 1, 2, 3

Immediate First-Hour Management

Glucocorticoid Administration:

• Give hydrocortisone 100 mg IV bolus as soon as adrenal crisis is suspected—this dose saturates 11β-hydroxysteroid dehydrogenase type 2 to provide both glucocorticoid and mineralocorticoid effects. 1, 2
• If IV access cannot be rapidly established, administer hydrocortisone 100 mg IM without delay. 2, 4
• Never postpone treatment while awaiting laboratory confirmation—mortality increases with delayed intervention. 1, 2, 3

Fluid Resuscitation:

• Infuse 0.9% isotonic saline 1 liter over the first hour to address severe volume depletion and hypotension. 1, 2, 3
• In pediatric patients, give initial normal saline bolus of 10-20 mL/kg (maximum 1,000 mL). 2

Laboratory Workup (Do Not Delay Treatment):

• Draw blood for cortisol, ACTH, electrolytes (sodium, potassium), creatinine, BUN, and glucose before starting hydrocortisone if feasible, but never wait for results. 1, 2, 3
• Obtain blood cultures and infection workup, as infections are the most common precipitant. 2

Ongoing Management (First 24-48 Hours)

Continued Glucocorticoid Therapy:

• Administer hydrocortisone 200 mg per 24 hours as continuous IV infusion (preferred method). 2, 3
• Alternative: Give hydrocortisone 50 mg IV or IM every 6 hours if continuous infusion is unavailable. 1, 2, 3

Fluid Management:

• Continue isotonic saline infusion at a slower rate, delivering total of 3-4 liters over 24-48 hours. 2, 3
• Monitor hemodynamics frequently to prevent fluid overload. 2, 3
• Check serum electrolytes frequently to guide fluid management. 2

Supportive Care:

• Provide gastric stress ulcer prophylaxis. 2
• Administer low-dose heparin for DVT prophylaxis depending on severity. 2
• Treat any precipitating infections with appropriate antimicrobial therapy. 2, 3
• Monitor blood glucose frequently, especially in children who are more vulnerable to hypoglycemia. 2, 4

Critical Care Considerations:

• Admit patients with persistent hypotension or end-organ dysfunction to ICU or high-dependency unit. 2, 3

Critical Clinical Pitfalls to Avoid

Do not wait for hyperkalemia to confirm diagnosis—it is present in only 50% of cases, while hyponatremia occurs in 90% but its absence should not prevent treatment. 1, 2, 5

Do not add separate mineralocorticoid (fludrocortisone) during acute crisis—high-dose hydrocortisone (≥50 mg per day) provides adequate mineralocorticoid activity. 1, 2

Do not use dexamethasone for primary adrenal insufficiency—it lacks mineralocorticoid activity and is inadequate for treating Addisonian crisis. 2

Do not delay treatment for diagnostic procedures—even mild symptoms can rapidly progress to cardiovascular collapse and death. 1, 2, 3

Transition to Maintenance Therapy

Tapering Parenteral Therapy:

• Taper parenteral glucocorticoids over 1-3 days to oral therapy once the precipitating illness resolves and patient can tolerate oral medications. 1, 2, 3
• Transition to maintenance hydrocortisone 15-25 mg daily divided into 2-3 doses. 1, 3

Reintroducing Mineralocorticoid:

• Add fludrocortisone 50-200 µg daily as single morning dose only after hydrocortisone dose falls below 50 mg per day. 1, 2

Prevention of Future Crises

Patient Education:

• Instruct patients to double or triple oral glucocorticoid dose during minor illness with fever. 1, 3
• Teach use of parenteral hydrocortisone during severe illness or inability to take oral medications. 1, 3, 4
• Ensure patients have emergency supplies of injectable hydrocortisone for self-administration. 1, 3, 4

Medical Identification:

• Provide medical alert identification jewelry and steroid emergency card to trigger appropriate treatment by emergency personnel. 1, 3, 4

Follow-up:

• Arrange early endocrinology consultation for ongoing management and education on emergency injectables. 2
• Evaluate patients with recurrent crises for chronic under-replacement with fludrocortisone, low salt intake, poor compliance, or psychiatric disorders. 2, 3

Common Precipitating Factors to Investigate

• Gastrointestinal illness with vomiting/diarrhea (most common trigger). 2
• Any type of infection. 2, 3
• Surgical procedures without adequate steroid coverage. 2
• Physical trauma or injuries. 2
• Medication non-compliance or failure to increase doses during stress. 2
• Myocardial infarction or severe allergic reactions. 2