General
a&o x4
What does a&o x4 mean?
A mental-status shorthand meaning the patient knows who they are, where they are, the time, and what is happening. 'x3' omits situation.
"Patient is awake, A&O x4, no deficits."
Origin
Shorthand for 'alert and oriented times four.'
Frequently asked questions
What does A&O x4 mean?
It means the patient is 'alert and oriented times four' — they know who they are, where they are, the time, and what is happening.
What is the difference between A&O x4 and x3?
'x3' covers person, place, and time; 'x4' adds awareness of the situation or event.
When is A&O documented?
During neurological or mental-status assessment to record a patient's level of orientation.
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