Critical care ultrasonography (CCUS) is a bedside technique performed by the clinician at point of care. Conceptually, CCUS functions as an extension of traditional physical examination by allowing the intensivist to visualize the anatomy and function of various organ systems in real time. It overcomes the limitations of ultrasonography performed by radiology or cardiology services on consultative basis. The inevitable delay in obtaining the study is avoided and the dissociation between the individual interpreting the study and the physician treating the patient at bedside is eliminated. The beauty of CCUS lies in that, the focused examinations can be repeated as required at bedside, without the need to transfer to radiology suite and without additional exposure to radiation. The repeat examination can track effects of therapy and evolution of disease with time.