Management of Subacute Postinfectious Cough in Pregnancy

Diagnostic Classification

The American College of Chest Physicians recommends classifying a 3-week dry cough as a subacute postinfectious cough, which is the most common cause of cough in this timeframe, with a duration of 3-8 weeks following a presumed viral respiratory infection 3, 4, 1

The American Academy of Family Physicians suggests assessing for vital sign abnormalities, such as heart rate ≥100 bpm, respiratory rate ≥24 breaths/min, temperature ≥38°C, to exclude urgent conditions 2
The American College of Chest Physicians recommends evaluating for asymmetrical lung sounds or focal consolidation on examination to rule out serious pathology 2
The Centers for Disease Control and Prevention advises assessing for pertussis features, including paroxysmal coughing episodes, post-tussive vomiting, or inspiratory whooping sound, and obtaining a nasopharyngeal culture if suspected 1, 5, 2

The American College of Chest Physicians recommends inhaled ipratropium bromide as the only medication with fair-quality evidence demonstrating efficacy in attenuating postinfectious cough, with a strength of evidence rated as fair 3, 1
The American Academy of Family Physicians suggests that antibiotics have no role in postinfectious cough, as the cause is not bacterial infection 3, 1, 6

The American College of Chest Physicians recommends considering dextromethorphan for dry, bothersome cough, particularly when disrupting sleep, although it should be used cautiously in pregnancy 7
The American Thoracic Society suggests considering inhaled corticosteroids if cough persists despite ipratropium and adversely affects quality of life, with a strength of evidence rated as low 3, 1

The American College of Obstetricians and Gynecologists recommends albuterol as the preferred short-acting beta-agonist if bronchospasm is suspected, due to its safety data in pregnancy 8
The National Asthma Education and Prevention Program suggests budesonide as the preferred inhaled corticosteroid if ICS therapy becomes necessary, due to its reassuring pregnancy safety data 8
The American College of Chest Physicians advises avoiding systemic corticosteroids unless severe paroxysms occur and other common causes have been ruled out, with a strength of evidence rated as low 3, 1

The American Academy of Family Physicians recommends not prescribing antibiotics for viral postinfectious cough, as this provides no benefit and contributes to antibiotic resistance 7, 6
The American Gastroenterological Association suggests not assuming GERD without typical symptoms, such as heartburn, sour taste, or regurgitation, and not using empiric PPI therapy 7

The American College of Chest Physicians recommends providing reassurance that postinfectious cough typically resolves spontaneously within 3-8 weeks from symptom onset, and scheduling follow-up in 4-6 weeks to reassess 6, 2
The American Academy of Family Physicians suggests reclassifying as chronic cough and initiating systematic evaluation for upper airway cough syndrome, asthma, and GERD if cough persists beyond 8 weeks total 2, 6

The Centers for Disease Control and Prevention advises maintaining high suspicion for pertussis even without classic whooping sound, as it can present atypically, and using macrolide antibiotics for treatment and preventing transmission if confirmed or highly suspected 1, 5, 6