Introduction: Asthma is a chronic respiratory disease characterized by inflammation and tightening of the muscles around the airways. The main symptoms include coughing, wheezing, difficulty breathing, and chest tightness. These symptoms can be mild or severe and come and go. Asthma affects about 12% of pregnant women. Purpose: The purpose is to investigate which factors influence the course of asthma during pregnancy, how asthma affects birth outcomes, and what role midwives and other healthcare professionals play in the care and management of pregnant women with asthma. Methods: We used a descriptive method with a review of scientific and professional literature published between 2014 and 2024. As the literature in Slovenian is limited, we focused on sources in English. We searched for articles in the Medline (Pubmed), Cinahl, Springerlink, ScienceDirect, and Cochrane Library databases. Another inclusion criterion was that the article had to be available in its entirety. Results: We included 22 sources in our literature review. Asthma during pregnancy, especially uncontrolled asthma, increases the risk of congenital anomalies, preterm birth, preeclampsia, small for gestational age, gestational diabetes, gestational hypertension, cesarean section, premature rupture of membranes, perinatal mortality, and asphyxia. The risk associated with the use of inhaled corticosteroids is low, while a higher risk is associated with β2-agonists and systemic corticosteroids. Environmental pollutants, unstable mental state of pregnant women with asthma, and high total IgE levels worsen pregnancy outcomes in women with asthma, while the age of the pregnant woman, socioeconomic status, and racial/ethnic differences do not have a significant impact. Midwives need clear guidelines for health education work with women. Discussion and conclusion: Asthma in pregnancy requires a comprehensive approach. Proper use of inhaled corticosteroids reduces perinatal risks, while pharmacological, environmental, and psychosocial factors influence its course. Routine measurement of serum IgE in the first trimester in moderate/severe asthma is suggested as a prognostic marker for small for gestational age and hypertensive disorders in newborn. Midwives can improve the monitoring of pregnant women with asthma with additional knowledge. Clinical guidelines for interdisciplinary collaboration in the medical care of women with asthma could improve health outcomes.
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