The physician orders a lung ventilation/perfusion scan (V/Q scan) for a MedSurg patient. The patient asks the nurse, 'why did the doctor order this?' Which nursing response is the most accurate?
1) To assess the airflow and blood flow in your lungs
2) To check for any abnormalities or blockages in your lungs
3) To determine the cause of your respiratory symptoms
4) To evaluate the effectiveness of your current treatment