A&O x4 stands for orientation to which four domains?

• A. Person, Place, Time, Event
• B. Person, Place, Time, Date
• C. Alert and oriented to person, place, time, event
• D. Person, Place, Time, State

Answer: (C)

A&O x4 measures a person’s orientation across four domains: who they are (person), where they are (place), the current time or date (time), and what is happening around them (event or situation). Being “alert and oriented” means the person is awake, aware, and can correctly identify these four anchors. This quick check is a standard part of cognitive screening in acute care because it helps detect delirium, confusion, or other cognitive issues by confirming whether the patient can anchor their awareness to the correct person, place, time, and surrounding event. The four domains explicitly are person, place, time, and event, and the phrasing includes the alert and oriented status. The other options don’t fit because they swap or omit the required fourth domain or omit the necessary alert/oriented phrasing (for example, using date instead of time, or using state instead of event).