Joann, a 16-year-old high-achieving student, has greatly restricted her daily food intake. She exercises up to 3 hours/day and is presently at 75% of her ideal body weight. Joann has postural hypotension and has been amenorrheic for 4 months. She is admitted to the hospital. What should the psychiatric and mental health nurse do first?
A. Place her on bed rest with cardiac monitoring
B. Place emphasis on fluid intake and monitor weight
C. Educate her about distorted body image
D. Refer her to an RD for nutrition counselling