Pathophysiology of Right Ventricular Failure in Pulmonary Embolism

Acute pulmonary embolism (PE) is a potentially life-threatening condition that can precipitate obstructive shock, a form of circulatory failure caused by the mechanical obstruction of blood flow through the pulmonary circulation. This article explores the pathophysiological mechanisms linking massive PE to obstructive shock, highlighting key diagnostic challenges, and the importance of rapid recognition in the emergency setting. We examine current strategies for risk stratification, imaging, and laboratory testing, as well as emerging biomarkers that may aid in early identification. The article also evaluates the efficacy and limitations of therapeutic interventions, including systemic thrombolysis, catheter-directed therapies, and surgical embolectomy, in the context of hemodynamic instability. Understanding the complex interplay between PE and obstructive shock is essential for optimizing outcomes in critically ill patients.