Management of Flu Symptoms in Patients with Asthma or COPD

Initial Assessment and Treatment

For patients with influenza-like illness and underlying asthma or COPD, the American College of Physicians recommends initiating short-acting bronchodilators immediately, adding systemic corticosteroids, considering oseltamivir if within 48 hours of symptom onset, and providing antibiotic coverage if there is increased sputum purulence, volume, or dyspnea 1, 2
The European Respiratory Society suggests determining severity using clinical parameters to guide disposition, including sending to the emergency room immediately if respiratory rate >30/min, blood pressure <90/60 mmHg, shortness of breath at rest, confusion, hemoptysis, or bilateral chest signs suggesting pneumonia 3

The Global Initiative for Asthma recommends starting short-acting inhaled β2-agonists with or without short-acting anticholinergics as first-line treatment 1
The American Thoracic Society suggests using nebulizers if the patient is too breathless to use standard inhalers effectively, or using spacer devices with metered-dose inhalers 1

The National Asthma Education and Prevention Program recommends prednisone 40 mg orally daily for 5 days as the indicated regimen for systemic corticosteroids 1, 2
The American College of Chest Physicians states that corticosteroids improve lung function, oxygenation, shorten recovery time, and reduce hospitalization duration in COPD exacerbations 1

The Infectious Diseases Society of America recommends considering oseltamivir if influenza is suspected, with a dosage of 75 mg orally twice daily for 5 days if the patient presents within 48 hours of influenza symptom onset 1, 2
The Centers for Disease Control and Prevention suggests that oseltamivir reduces illness duration by approximately 24 hours and may reduce hospitalization rates 2

The American Thoracic Society recommends co-amoxiclav as first-line antibiotic coverage because it covers common secondary bacterial pathogens including Streptococcus pneumoniae and Haemophilus influenzae during influenza 1, 2
The Infectious Diseases Society of America states that indications for antibiotics include increased sputum purulence, increased sputum volume, or increased dyspnea 1

The British Thoracic Society suggests titrating oxygen based on underlying lung disease, maintaining SpO2 ≥92% in most patients, or ≥90% in COPD patients with known CO2 retention 4, 1
The American Thoracic Society recommends obtaining arterial blood gases if SpO2 <92% or if the patient has features of severe illness 4, 5

The National Institute for Health and Care Excellence recommends checking vital signs at least twice daily, including temperature, respiratory rate, pulse, blood pressure, mental status, oxygen saturation, and inspired oxygen concentration 7, 1
The American College of Physicians suggests using an Early Warning Score system for convenient tracking 7

The American Thoracic Society recommends considering non-invasive ventilation in COPD patients with acute hypercapnic respiratory failure 4, 5, 7, 1
The European Respiratory Society states that non-invasive ventilation may serve as a bridge to invasive ventilation in patients without pre-existing COPD who develop respiratory failure 4, 7

The American College of Physicians recommends reviewing 24 hours prior to discharge and ensuring that patients meet stability criteria, including temperature ≤37.8°C, heart rate ≤100/min, respiratory rate ≤24/min, systolic blood pressure ≥90 mmHg, and oxygen saturation ≥90% 8
The Centers for Disease Control and Prevention suggests arranging follow-up for all patients who suffered significant complications or worsening of underlying disease 8
The American College of Physicians recommends ensuring annual influenza vaccination to prevent future exacerbations 1, 2
The National Asthma Education and Prevention Program suggests considering pneumococcal vaccination as part of overall COPD/asthma management 1, 2