If an anorexic is tube fed in a treatment center, how many calories does the person receive daily?

Patient: If an anorexic refuses to eat or drink a supplemental drink like Ensure and is fed by a feeding tube in a treatment center or during a 5150 involuntary psychiatric hold, how many calories does the person receive daily from the feeding tube?I hope anorexics don’t get very many calories from a feeding tube daily.Thank you.

Doctor: