From pulmonary embolism to chronic thromboembolic pulmonary hypertension: risk factors

Chronic thromboembolic pulmonary hypertension is a long-term consequence of acute pulmonary embolism. Gradual obstruction of the pulmonary arteries and secondary changes in the pulmonary microcirculation over time cause progressive increases in pulmonary vascular resistance and pulmonary artery pressure that can result in severe right heart failure. This article provides an overview of pulmonary embolism and chronic thromboembolic pulmonary hypertension scientific literature and national guidelines. We focus on disease and recurrence risk factors and outline future directions of research to improve short- and long-term patient outcomes.