The purpose of this stage is to evaluate progress toward the goals identified in the previous stages. If progress towards the goal is slow, or if regression has occurred, the nurse must change the plan of care accordingly. Conversely, if the goal has been achieved then the care can cease. New problems may be identified at this stage, and thus the process will start all over again. It is due to this stage that measurable goals must be set - failure to set measurable goals will result in poor evaluations.
The entire process is recorded or documented in an agreed format in the patient's care plan in order to allow all members of the nursing team to perform the agreed care and make additions or changes where appropriate.