What do I do if the hat size doesn't fit the patient?

What do I do if the hat size doesn't fit the patient?

The hat size is typically based on the weight of the patient, although the patient's head size may be smaller or larger for his or her weight. A correctly-sized hat will tightly fit the patient's head, fit over the ears and forehead, but not cover the patient's eyes. The hat should not move once it is placed on the patient's head, but it should not be too tight that it harms the patient or does not fit over the patient's ears and forehead.