The Role of Echocardiography Doppler in Pulmonary Embolism

The purpose of this review is to make a critical analysis of selected literature about the role of echo-Doppler in suspected or proved venous thromboembolism and to address some issues about the potential use of echo-Doppler in specific situations in patients with pulmonary embolism (PE). Echo-Doppler is of great value in patients with suspected PE because many conditions that may be clinically mistaken for PE will be diagnosed. Echo-Doppler should not be used alone to rule out the diagnosis of PE because the ability of the technique in proving the diagnosis of PE in a nonselected population is limited. Echo-Doppler may be of value for diagnosis in selected subgroups of PE patients, mostly in scenarios like the emergency department or intensive care unit. Echo-Doppler is valuable in the hemodynamic assessment of patients with PE, making possible a strategy for risk stratification of in-hospital death in relation to the degree of right ventricle dysfunction at the time of diagnosis of acute PE. Echo-Doppler is useful for serial assessment of patients with established diagnosis of chronic thromboembolic pulmonary hypertension. Echo-Doppler may be useful in follow-up of patients after a diagnosis of acute PE to enable early identification of patients with persistent pulmonary hypertension/right ventricle dysfunction.