A nurse is providing care to children on a general pediatric unit. Which of the following children should the nurse identify as a potential victim of abuse?

The correct answer is Choice B.

Choice A rationale: Phase IV is not a recognized phase in the cycle of battering. Typically, the cycle of battering consists of three phases: tension-building, acute battering, and honeymoon phase. Each phase has distinct characteristics.

Choice B rationale: Phase I, the tension-building phase, is characterized by increased tension, irritability, and frustration in the abuser. The victim may sense the abuser's declining tolerance for frustration, leading them to try to avoid confrontation by staying out of the abuser's way.

Choice C rationale: Phase III is the honeymoon phase, where the abuser may apologize, show remorse, and be affectionate. The victim may feel hopeful for change. However, this does not match the described behavior of increasing frustration and anger with quick apologies.

Choice D rationale: This is a duplicate of Choice B. As previously stated, Phase I, the tension-building phase, involves the buildup of tension and irritability in the abuser, leading the victim to try to stay out of the abuser's way to avoid conflict.

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.