Managing an acute asthma attack in the A&E is a classic UKMLA AKT topic. Since you're prepping for the UK exams, we'll stick closely to the BTS/SIGN guidelines, which are the gold standard here.

It’s all about staying calm, grading the severity quickly, and hitting them with the "O SHIT" treatment (more on that mnemonic in a second!).

1. Assessment & Severity Grading

The first thing you need to do is figure out how worried you should be. We grade these into Moderate, Severe, and Life-threatening.

Mnemonic: 33-92-CHEST (Life-Threatening Signs)

• 33: PEFR < 33%
• 92: SpO2 < 92%
• C: Cyanosis / Confusion
• H: Hypotension
• E: Exhaustion / Feeble respiratory effort
• S: Silent chest
• T: Tachyarrhythmia (or bradycardia)

2. Management (The "O SHIT!" Mnemonic)

This is the standard escalation of treatment in the A&E:

• O - Oxygen: Aim for sats of 94-98%.
• S - Salbutamol: 5mg nebulised (driven by oxygen).
• H - Hydrocortisone (IV) or Prednisolone (Oral): 40-50mg prednisolone is standard. Continue for at least 5 days.
• I - Ipratropium bromide: 0.5mg nebulised (add this for severe or life-threatening cases).
• T - Theophylline (Aminophylline): Usually an ICU/Senior decision if the patient isn't responding.
• ! - Magnesium Sulphate: 1.2–2g IV infusion over 20 mins (for severe/life-threatening cases).

3. When to refer to ICU?

If they have a "Normal" pCO2 on an ABG, that is a massive red flag. In an asthma attack, they should be hyperventilating (low pCO2). A normal or rising pCO2 means they are tiring out and might need intubation.

I'll pull up some high-yield lessons and a flowchart to help you visualize the management pathway.

I've found a great management algorithm that covers the step-up approach, which is vital for both acute and chronic management.

For the acute setting, remember that the "Life-Threatening" category is the one that usually requires an immediate call to the ICU/Anaesthetics team.

This algorithm shows the stepped care approach. In an acute A&E presentation, you are essentially jumping to the highest steps (Step 5/6) with systemic steroids and nebulised bronchodilators.

Discharge Criteria (High Yield for AKT)

Before you send them home, they must meet these BTS criteria:

1. Stable on discharge medication (no nebs for 12-24 hours).
2. PEFR > 75% of best or predicted.
3. Inhaler technique checked and a written asthma action plan provided.
4. GP follow-up within 2 working days.
5. Respiratory clinic follow-up within 4 weeks.

Would you like to try a few practice questions on this to see how they frame it in the exam?