Initial Management of Cough with Inspiratory Wheezing

Immediate Assessment and Risk Stratification

Evaluate patients with cough and inspiratory wheezing for respiratory distress, including markedly elevated respiratory rate, intercostal retractions, grunting, cyanosis, or altered mental status, which indicate need for urgent intervention 1, 2
Assess for risk factors, including comorbidities, frailty, immunosuppression, or impaired ability to cough and clear secretions 1, 2
Obtain focused history to determine ACE inhibitor use, smoking status, duration of cough, and presence of paroxysmal coughing, post-tussive vomiting, or whooping sound 1, 2

The presence of inspiratory wheezing is a crucial distinguishing feature that narrows the differential diagnosis significantly, suggesting either pertussis infection or upper airway obstruction 3, 4, 5

Obtain chest radiograph if pneumonia is suspected based on tachypnea, tachycardia, dyspnea, or abnormal lung findings 1, 2
Perform spirometry to assess for airflow obstruction and characteristic patterns, such as flattened inspiratory/expiratory peaks suggesting fixed extrathoracic obstruction 6, 2
Order nasopharyngeal culture if pertussis is suspected, as isolation of bacteria is the only certain diagnostic method 3, 4, 5

Administer inhaled albuterol 2.5 mg by nebulizer or 400 mcg by metered-dose inhaler with spacer as first-line therapy, serving both therapeutic and diagnostic purposes 7, 8
Initiate combination therapy with inhaled bronchodilators and inhaled corticosteroids as first-line treatment if asthma is suspected 7, 8, 9
Prescribe macrolide antibiotic immediately if pertussis is suspected, with early treatment diminishing coughing paroxysms and preventing disease spread 3, 4, 5

Do not rely on cough characteristics alone for diagnosis, as they have limited diagnostic value 1, 2
Do not use newer generation non-sedating antihistamines for acute cough, as they are ineffective 9, 1
Do not assume pertussis is ruled out in vaccinated individuals, as breakthrough infections occur and should be diagnosed when clinical features are present 3, 4, 5

Add leukotriene receptor antagonist if cough persists despite inhaled corticosteroids and bronchodilators, after excluding poor compliance or contributing conditions 7, 8
Consider short course of oral corticosteroids for severe/refractory asthmatic cough 7, 8
Pursue advanced testing, such as high-resolution CT or bronchoscopy, if cough persists after 4-6 weeks of appropriate empiric treatment 1, 2