RATIONALE: An anorexic client who requires hospitalization is in poor physical condition from starvation and may die as a result of arrhythmias, hypothermia, malnutrition, infection, or cardiac abnormalities secondary to electrolyte imbalances. Therefore, monitoring the client's vital signs, serum electrolyte level, and acid-base balance is crucial. Option 1 may worsen anxiety. Option 2 is incorrect because a weight obtained after breakfast is more accurate than one obtained after the evening meal. Option 4 would reward the client with attention for not eating and reinforce the control issues that are central to the underlying psychological problem; also, the client may record food and fluid intake inaccurately.NURSING PROCESS STEP: PlanningCLIENT NEEDS CATEGORY: Physiological integrityCLIENT NEEDS SUBCATEGORY: Reduction of risk potentialCOGNITIVE LEVEL: Knowledge