a 26-year-old primigravida has come to the clinic for her regular prenatal visit at 12 weeks. she appears thin and somewhat nervous. she reports that she eats a well-balanced diet, although her weight is 5 pounds less than it was at her last visit. the results of laboratory studies confirm that she has a hyperthyroid condition. based on the available data, the nurse formulates a plan of care. what nursing diagnosis is most appropriate for the woman at this time?