A comprehensive clinical reference on the use of Doppler echocardiography in intensive care, anesthesiology, and emergency medicine. The work addresses bedside cardiac ultrasound as a diagnostic and monitoring tool for critically ill patients, perioperative assessment, hemodynamic evaluation, and urgent decision-making. It is intended for physicians, anesthesiologists, emergency clinicians, intensivists, and trainees who need practical guidance on acquiring, interpreting, and applying echocardiographic findings in high-acuity settings. With its substantial length and Elsevier publication, the volume functions as a specialized professional handbook for integrating cardiac ultrasound into acute and critical care practice.