A nurse is caring for a group of older adult clients. Which of the following manifestations indicates one of the clients is experiencing delirium?

The correct answer is Choice D

Choice A rationale: Metrorrhagia, or irregular uterine bleeding, is not typically associated with anorexia nervosa. Instead, amenorrhea is more common due to hypothalamic suppression from low body fat and caloric intake. The hypothalamus reduces gonadotropin-releasing hormone (GnRH), leading to decreased luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which suppresses ovulation and menstruation. Estrogen levels fall below normal (typically 30–400 pg/mL), disrupting endometrial stability. Thus, bleeding is less likely than complete menstrual cessation.

Choice B rationale: Tachycardia is not expected in anorexia nervosa; bradycardia is more common due to metabolic adaptation and reduced cardiac workload. The body conserves energy by lowering heart rate, often below 60 bpm. Malnutrition leads to decreased thyroid hormone (T3), reduced sympathetic tone, and myocardial atrophy. Electrolyte imbalances and hypovolemia further depress cardiac output. Tachycardia may occur in refeeding syndrome or acute stress, but chronically, the heart rate is typically slow due to adaptive mechanisms.

Choice C rationale: Hyperkalemia is rare in anorexia nervosa; hypokalemia is far more common due to purging behaviors, vomiting, and diuretic or laxative abuse. Potassium levels often fall below the normal range of 3.5–5.0 mEq/L. Losses through the gastrointestinal tract and renal excretion lead to muscle weakness, arrhythmias, and fatigue. Intracellular shifts during starvation also contribute to low serum potassium. Hyperkalemia may occur transiently during tissue breakdown or renal failure but is not a hallmark finding.

Choice D rationale: Constipation is a frequent finding in anorexia nervosa due to decreased caloric intake, slowed gastrointestinal motility, and reduced fiber consumption. Starvation suppresses parasympathetic activity, leading to delayed colonic transit. Electrolyte imbalances, especially hypokalemia, further impair smooth muscle contraction. Normal bowel frequency ranges from three times per week to three times per day; anorexic clients often fall below this due to systemic hypometabolism. Constipation may also be exacerbated by dehydration and laxative dependence.

The correct answer is choice A: "You may experience dizziness upon standing while taking this medication."

Choice A rationale:

This choice is the correct answer because haloperidol, an antipsychotic medication, can cause orthostatic hypotension, which leads to dizziness upon standing. Antipsychotic medications often affect blood pressure regulation and can result in a sudden drop in blood pressure when transitioning from sitting or lying down to standing. This explanation provides essential information to the client to help them understand potential side effects and take necessary precautions.

Choice B rationale:

This choice is incorrect. Haloperidol is not indicated for treating symptoms of obsessive-compulsive disorder (OCD). It is primarily used to manage symptoms of schizophrenia and other psychotic disorders. Providing false information about its indications is not appropriate and may lead to confusion.

Choice C rationale:

This choice is incorrect. Clients should never stop taking antipsychotic medications abruptly without consulting their healthcare provider. Discontinuing such medications can lead to withdrawal effects and a worsening of symptoms. Encouraging the client to stop the medication if side effects are bothersome is not appropriate and could potentially jeopardize their well-being.

Choice D rationale:

This choice is partially correct but not the best answer. While haloperidol can cause excessive salivation (sialorrhea) as a side effect, the primary concern in this situation should be related to orthostatic hypotension and dizziness upon standing. Mentioning excessive salivation would be helpful, but it's secondary to the risk of falls associated with orthostatic hypotension.