Review Question - QID 213564

A 23-year-old woman presents to the physician with complaints of pain and paresthesias in her left hand, particularly her thumb, index, and middle fingers. She notes that the pain is worse at night, though she still feels significant discomfort during the day. The patient insists that she would like urgent relief of her symptoms, as the pain is keeping her from carrying out her daily activities. On physical examination, pain and paresthesias are elicited when the physician percusses the patient’s wrist as well as when the patient is asked to flex both of her palms at the wrist. Which of the following is the most appropriate initial step in the management of this patient’s condition?