In a patient with acute exacerbation of asthma presenting with tachycardia (120 bpm) and tachypnea (respiratory rate 32 breaths per minute), what is the appropriate management?

Management of Acute Severe Asthma with Pulse 120 bpm and RR 32 breaths/min

Give nebulized salbutamol, oral prednisolone, and immediately refer to hospital (Option A).

Clinical Assessment

This patient meets criteria for acute severe asthma based on the British Thoracic Society guidelines 1, 2:

• Respiratory rate >25 breaths/min (patient has 32)
• Heart rate >110 beats/min (patient has 120)

These vital signs alone classify this as a severe exacerbation requiring immediate treatment AND hospital referral.

Immediate Management Algorithm

Step 1: Initiate Treatment Immediately (Do Not Delay)

Nebulized bronchodilator:

• Salbutamol 5 mg via nebulizer (or terbutaline 10 mg) 1, 2
• If no nebulizer available, give 10-20 puffs via large volume spacer 2

Systemic corticosteroids:

• Prednisolone 30-60 mg orally 1, 2
• Clinical benefits take 6-12 hours to manifest, so early administration is critical 3

Step 2: Monitor Response (15-30 Minutes After Nebulizer)

The guidelines are explicit: you MUST assess response before making any decision about observation 2. This is where options (c) and (d) fail—they suggest observation without ensuring both treatments are given first.

Step 3: Hospital Referral Criteria

Immediate hospital referral is required if ANY of the following persist after initial treatment 1:

• Any features of severe asthma (which this patient already has)
• Peak expiratory flow <33% of predicted
• Inadequate response to initial bronchodilator therapy

Why Option A is Correct

The British Thoracic Society guidelines explicitly state for patients with features of severe asthma in general practice 2:

1. Treatment protocol: Nebulized salbutamol + prednisolone 30-60 mg
2. Monitor response: 15-30 minutes after nebulizer
3. If any signs of acute severe asthma persist: Arrange admission

Critical point: The guidelines emphasize that "delay can be fatal" and doctors commonly underestimate severity 2. With a pulse >110 and respiratory rate >25, this patient already meets multiple severe criteria, making hospital referral mandatory regardless of initial response.

Why Other Options Are Wrong

Option B (Nebulizer only, no steroids): Violates the fundamental principle that systemic corticosteroids should be given to all patients with acute severe asthma as early as possible 1, 3. The guidelines state steroids should be given "immediately" and "AT ONCE" 1.

Option C (Prednisolone only, observe): Fails to provide immediate bronchodilation, which is the first-line treatment. Steroids alone take 6-12 hours to work 3.

Option D (Nebulizer only, observe): Missing the critical steroid component and inappropriately delays hospital referral for a patient who already meets severe criteria.

Common Pitfalls to Avoid

• Underestimating severity: Patients with severe asthma may not appear distressed 2. Objective measurements (vital signs, peak flow) are essential.
• Delaying steroids: The most common error is underuse of corticosteroids 2. They must be given immediately, not after observing response.
• Observing without both treatments: Never observe a patient with severe features without first giving BOTH bronchodilator AND steroids 2.
• Assuming home management is safe: A lower threshold for admission is appropriate for patients seen in afternoon/evening, those with recent symptom worsening, or previous severe attacks 1.

The correct answer is (a): Nebulized salbutamol, oral prednisolone, and refer to hospital. This approach addresses the immediate life-threatening bronchospasm, initiates anti-inflammatory therapy, and ensures appropriate escalation of care for a patient meeting severe asthma criteria 1, 2.