RT Journal Article T1 Importance of the Study of the Right Heart Chambers in Symptomatic Acute Pulmonary Embolism A1 Rodríguez Núñez, Nuria A1 Virgós-Pedreira, Alejandra A1 Illade-Fornos, Alfonso A1 Ferreiro Fernández, Lucía A1 Toubes Navarro, María Elena A1 Valdés Cuadrado, Luis K1 Hemodynamic instability K1 Pulmonary embolism K1 Transthoracic echocardiography AB We present the case of a 42-year-old woman on oral contraceptives that presented to the emergency department with pain and swelling in the left lower limb. Diagnosis of extensive deep vein thrombosis was established. A few minutes later, she exhibited signs of shock and hemodynamic instability, thus raising suspicion of high-risk acute pulmonary thromboembolism. Prior to the administration of fibrinolytic treatment, a bedside transthoracic echocardiography was performed that excluded right ventricular dilatation. Then, the study was complemented with a thoraco-abdominal computed tomography scan that demonstrated a large retroperitoneal hematoma as the cause of the shock. In conclusion, a transthoracic echocardiography should be performed before initiating thrombolytic therapy in hemodynamically instable patients with strong suspicion of high-risk pulmonary embolism. PB Wiley YR 2025 FD 2025-02-11 LK https://hdl.handle.net/10347/45714 UL https://hdl.handle.net/10347/45714 LA eng NO Rodríguez-Núñez, N., Virgós-Pedreira, A., Illade-Fornos, A., Ferreiro- Fernández, L., Toubes-Navarro, M. E., & Valdés-Cuadrado, L. (2025). Importance of the Study of the Right Heart Chambers in Symptomatic Acute Pulmonary Embolism. Respirology Case Reports, 13(2). https://doi.org/10.1002/RCR2.70098 DS Minerva RD 26 abr 2026