Mary Corcoran provides an overview of patient assessment for emergency room nurses. ER nurses must be prepared to assess patients with a wide range of medical, surgical, traumatic, social and behavioral complaints spanning all ages. The initial assessment involves a primary survey of the ABCDE (Airway, Breathing, Circulation, Disability, Exposure) followed by a secondary survey of FGHI (Full set of vitals, pain assessment, history, head-to-toe exam, inspection of posterior surfaces). Special populations like children, elderly, obese, and pregnant women require modification of the standard assessment process. Ongoing reassessment is important for patients with changing conditions or receiving certain treatments.