Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 10/24/2025

Asthma Management in Pregnancy

Safety and Efficacy of Medications

  • The American College of Allergy and Clinical Immunology recommends albuterol as the preferred short-acting beta-agonist during pregnancy because of extensive human safety data 1
  • Maintaining asthma control during pregnancy is critical because uncontrolled asthma increases risks of perinatal mortality, pre-eclampsia, preterm birth, and low-birth-weight infants 1
  • It is safer for pregnant women to be treated with asthma medications than to have asthma symptoms and exacerbations, as maintaining lung function ensures adequate oxygen supply to the fetus 1
  • Monitoring asthma control and lung function during prenatal visits is necessary, as the course of asthma improves in one-third of women and worsens in one-third during pregnancy 1
  • Monthly evaluations allow opportunities to step up therapy if necessary or step down if possible 1
  • Withholding necessary bronchodilator therapy due to pregnancy concerns should be avoided, as the risks of maternal hypoxemia and uncontrolled asthma far exceed the theoretical risks of these medications 1