The Influence of Pulmonary Arterial Hypertension In Pregnancy: A Review

Pulmonary arterial hypertension (PAH) is a severe condition characterized by increased pulmonary vascular resistance and right ventricular failure. This review examines the intersection of PAH and pregnancy, highlighting the significant physiological, hemodynamic, and hormonal changes that exacerbate PAH during gestation. Pregnancy is contraindicated in PAH patients due to high maternal and fetal morbidity and mortality rates. However, some patients choose to continue their pregnancies, necessitating a comprehensive understanding of the implications and management strategies. Effective management of PAH in pregnant patients involves individualized treatment plans. Prepartum management focuses on optimizing therapy and monitoring hemodynamic status. Prostacyclin analogs and phosphodiesterase inhibitors are commonly used, though their safety profiles require further investigation. Intrapartum management prioritizes preventing right ventricular failure, utilizing therapies such as intravenous epoprostenol, inhaled iloprost, and inhaled nitric oxide. Managing PAH in pregnancy requires careful planning, continuous monitoring, and tailored therapeutic strategies to navigate the complex interplay of physiological changes and mitigate risks. Future research should focus on elucidating the pathophysiology of PAH during pregnancy and developing safer, more effective treatments to improve maternal and fetal outcomes.