Videos of a normal parasternal long-axis view, a normal parasternal short-axis view, a normal apical 4-chamber view, a normal subcostal long-axis view, an inferior vena cava long longitudinal axis view, a severely reduced left ventricular systolic function, a moderately reduced left ventricular systolic function, a hyperdynamic left ventricular systolic function, a right ventricular pressure overload, acute cor pulmonale, a pericardial and pleural effusion,a pericardial tamponade, aortic stenosis, valvular vegetation, papillary muscle rupture, pleural effusion, lung sliding and A lines, lung pulse, lung point, B lines, a consolidation pattern, a noncompressible common femoral vein diagnostic of thrombus, a compressible common femoral vein and artery, a compressible common femoral vein at the level of the saphenous vein intake, a femoral vein at common femoral artery bifurcation, a fully compressible common femoral vein, a fully compressible superficial femoral vein, a fully compressible popliteal vein, FAST study of right side, FAST study of suprapubic area, FAST study of left side accompany this article Critical care ultrasonography is a bedside technique performed by the frontline clinician at the point of care. Point-of-care ultrasonography is conceptually related to physical examination. The intensivist uses visual assessment, auscultation, and palpation on an ongoing basis to monitor the patient. Ultrasonography adds to traditional physical examination by allowing the intensivist to visualize the anatomy and function of the body in real time. Initial, repeated, and goal-directed ultrasonography is an extension of the physical examination that allows the intensivist to establish a diagnosis and monitor the condition of the patient on a regular basis.