[Physiological respiratory changes and venous thromboembolic disease during pregnancy].

During physiological pregnancy, changes in lung functions, ventilatory patterns and gas exchanges happen. Therefore, the dyspnea experienced by a majority of women is usually due to pregnancy itself and is very difficult to differentiate from a pathophysiological state. Anamnesis and clinical examination alone do not rule out dyspnea of ​​thromboembolic origin. Therefore, a structured approach, based on a thromboembolic risk assessment, the application of a specific management algorithm and the use of imaging exams is required for emergency management of dyspnea occurring during the pregnancy and in the postpartum.