Final answer:
The correct time to perform a secondary assessment in an unstable patient is upon arrival at the scene. Performing a secondary assessment involves a detailed examination of the patient's condition, focusing on non-life threatening injuries or illnesses.
Step-by-step explanation:
The correct time to perform a secondary assessment in an unstable patient is upon arrival at the scene.
Performing a secondary assessment involves a detailed examination of the patient's condition, focusing on non-life threatening injuries or illnesses. This assessment is performed after the initial primary assessment and stabilization of life-threatening conditions.
For an unstable patient, the primary focus should be on managing life threats and stabilizing the patient as quickly as possible. Once the immediate life threats have been addressed, a secondary assessment can be done to gather more information about the patient's condition and provide appropriate treatment.