Final answer:
The charge nurse needs to revise the etiology part of the nursing diagnosis statement.
Step-by-step explanation:
The charge nurse needs to revise the etiology part of the nursing diagnosis statement.
In this scenario, the nursing diagnosis statement is 'Impaired physical mobility related to tibial fracture', which identifies the patient's health problem. The etiology part specifies the cause or contributing factors, and in this case, it should reflect the patient's inability to ambulate to the bathroom.
However, the given nursing diagnosis statement does not include any evidence or defining characteristics to support the diagnosis.
Therefore, the nurse needs to revise the etiology part to provide appropriate evidence or defining characteristics.