Final answer:
Delirium after surgery can be caused by various factors and can lead to cognitive impairment. A mental status exam (MSE) can provide more information about the patient's cognitive functioning.
Step-by-step explanation:
The patient is experiencing delirium two days after bowel surgery. This could be a result of several factors, including anesthesia, medication side effects, or a post-operative infection. The fact that the patient can draw a square correctly but continues to draw squares when asked to draw other shapes suggests a cognitive impairment. A mental status exam (MSE) would be used to assess the patient's cognitive functioning and could reveal further information about their condition.