A patient requires intermittent catheterization due to urinary retention following a hernia repair surgery. You have been instructed to assist the patient with this procedure. Which of the following steps is essential to perform first to ensure the patient's safety and proper catheter insertion?
Position the patient in the supine position with knees flexed and separated.
Prepare the catheter and lubricant, laying them out within easy reach.
Confirm the patient's identity and explain the procedure, obtaining their informed consent.
Perform hand hygiene and open the catheterization kit on a sterile field.