This report comprehensively examines the application of focused ultrasound in the diagnosis and management of shock, a critical clinical syndrome characterized by inadequate cellular oxygenation. It details the four main categories of shock—cardiogenic, hypovolemic, distributive, and obstructive—and emphasizes the challenges in achieving accurate and timely diagnoses. The report highlights the significance of focused ultrasound or point-of-care ultrasound (POCUS) as a rapid, non-invasive bedside tool, particularly in emergency medicine and critical care settings. It explores various POCUS protocols, including the RUSH exam (Rapid Ultrasound in Shock) and FAST exam (focused assessment with sonography for trauma), outlining their components and diagnostic capabilities. The report discusses the diagnostic accuracy of focused ultrasound, comparing it to traditional methods, and the importance of early recognition and treatment in improving patient outcomes. It also reviews the existing evidence on the impact of focused ultrasound on patient outcomes and includes findings from key studies and protocols. Additionally, the report provides a detailed summary of the RUSH protocol, including its three key steps (Pump, Tank, and Pipes), and explores the use of POCUS in trauma and cardiac arrest situations. The report concludes by discussing the evidence that supports the use of ultrasound by clinicians in the diagnosis and management of shock and its role in improving patient outcomes.