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# IV Hydrocortisone for Acute Asthma
## Overview
Hydrocortisone is a short-acting systemic corticosteroid used in acute asthma exacerbations when patients cannot tolerate oral medications or require rapid, potent anti-inflammatory effects. It acts by suppressing airway inflammation, reducing mucus production, and upregulating beta-2 receptors.
## Primary Indications
* Status asthmaticus or severe acute asthma exacerbations unresponsive to initial intensive bronchodilator therapy and oral corticosteroids.
* Patients with poor GI tolerance or vomiting who require systemic steroids.
## Adult Dosing
* **Initial Dose:** 100 mg IV every 6 to 8 hours.
* **Maximum Dose:** Generally 400 mg/day depending on clinical response, though dosing varies based on institution-specific protocols for severe respiratory distress.
## Pediatric Dosing
* **Standard Dose:** 5–10 mg/kg/day divided every 6 hours.
* **Maximum Dose:** 100 mg per single dose.
* *Note: Dosing must be verified against local institutional clinical pathways or pediatric emergency guidelines.*
## Dose Adjustments
* **Hepatic/Renal Impairment:** No standard dosage adjustment is required for acute, short-term administration.
* **Chronic Corticosteroid Use:** Patients on long-term systemic steroids may require higher "stress doses" to avoid adrenal insufficiency.
## Contraindications
* Known hypersensitivity to hydrocortisone or any component of the formulation.
* Systemic fungal infections.
* Use caution in patients with active peptic ulcer disease, uncontrolled diabetes, or severe hypertension.
## Adverse Effects
* **Metabolic:** Hyperglycemia (common, even in non-diabetics), hypokalemia, fluid retention.
* **Psychiatric:** Agitation, insomnia, mood swings.
* **Gastrointestinal:** Dyspepsia, increased risk of GI bleed (rare in short-term use).
* **Immunologic:** Increased susceptibility to secondary infections with prolonged use.
## Key Drug Interactions
* **Diuretics:** Increased risk of hypokalemia.
* **Antidiabetic Agents:** Reduced efficacy of insulin or oral hypoglycemics (glucose monitoring required).
* **NSAIDs:** Increased risk of gastrointestinal ulceration/bleeding.
* **Live Vaccines:** Reduced immune response; avoid vaccination during therapy.
## Monitoring
* **Clinical:** Respiratory rate, oxygen saturation, work of breathing, and peak flow measurements (if feasible).
* **Laboratory:** Blood glucose levels (frequent checking in diabetics), electrolytes (specifically potassium if therapy is extended).
* **Signs of GI distress:** Monitor for melena or epigastric pain.
## Clinical Pearls
* **Timing:** Administer as soon as possible; systemic corticosteroids take 4–6 hours to demonstrate therapeutic benefit in asthma.
* **Preference:** Oral corticosteroids (e.g., prednisone or prednisolone) are preferred for most patients if tolerated in the ED, as they are equally effective and less invasive.
* **Transition:** Convert to oral therapy as soon as the patient is able to tolerate oral intake; a formal taper is generally unnecessary for short-course (5–7 day) asthma exacerbations.
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*Disclaimer: This information is for educational purposes and does not substitute for professional medical judgment. Always verify current prescribing information, institutional protocols, and patient-specific factors before administration.*
