A nurse is caring for an 18-year-old female client with anorexia nervosa who has been admitted to the medical unit with severe dehydration and electrolyte imbalances. The client's BMI is 14.2 kg/m², and she has been refusing meals for the past 3 days. Which nursing action should be the highest priority to ensure client safety?

The client has life-threatening complications (severe bradycardia, hypotension, hypokalemia, hyponatremia) requiring immediate cardiac monitoring and medical stabilization before psychological interventions.

Core Nursing Explanation Key Concept Analysis: This question tests the fundamental nursing principle of prioritization using Maslow's Hierarchy of Needs and the ABCs (Airway, Breathing, Circulation). The client with Anorexia Nervosa (AN) is in a critical medical state. A Body Mass Index (BMI) of 14.2 kg/m² indicates severe malnutrition and starvation. Combined with "severe dehydration and electrolyte imbalances," this creates a high risk for life-threatening cardiac complications such as arrhythmias (e.g., from hypokalemia), severe bradycardia, hypotension, and even cardiac arrest. The pathophysiological mechanism involves the body's adaptation to starvation, leading to reduced metabolic rate, muscle wasting (including the heart muscle), and electrolyte disturbances that disrupt the electrical conduction system of the heart.

Answer Rationale: Key Point! In any nursing scenario, physiological stability and safety always take precedence over psychological or educational interventions. Option ④ directly addresses the immediate threat to the client's life by focusing on monitoring for and preparing to treat cardiac complications. Continuous cardiac monitoring is essential to detect dangerous arrhythmias early. "Preparing for potential medical interventions" acknowledges that the client may require IV fluids, electrolyte replacement, or other emergency measures to stabilize her condition before any other treatment can be effective.

Distractor Analysis:

• Option ① (Initiate a behavior modification program): This is a premature and potentially harmful intervention. A client who is medically unstable cannot engage meaningfully in behavioral therapy. Forcing a behavior program without first addressing the life-threatening physical consequences of starvation violates the principle of "safety first."
• Option ② (Provide nutritional education): While education is a component of long-term recovery, it is not the priority for a client in acute medical crisis. The client's cognitive state may be impaired due to malnutrition, and the immediate need is physiological stabilization, not information.
• Option ③ (Establish a therapeutic relationship): Building trust is crucial for the long-term treatment of anorexia nervosa, but it is a Watch out for confusion! secondary priority when the client's life is at immediate risk. You cannot build an effective therapeutic relationship if the client experiences a cardiac arrest. Medical stabilization creates the foundation upon which psychological work can be built.

Related Concepts: This scenario illustrates the "Medical Stabilization Phase" of eating disorder treatment. Nursing care follows a clear sequence: 1) Address life-threatening physical complications (ABCs, electrolytes), 2) Achieve nutritional and weight restoration in a controlled setting, and then 3) Progress to intensive psychotherapy and behavior modification. Understanding the physical complications of anorexia (e.g., refeeding syndrome, osteoporosis, lanugo hair) is essential for comprehensive care planning.

Concept Summary

Concept	Description	Application in This Case
Maslow's Hierarchy	Physiological needs (food, water, safety) must be met before higher-level needs (belonging, self-esteem).	Cardiac stability (safety/physiological) is priority over therapy (self-esteem).
ABCs (Airway, Breathing, Circulation)	Framework for primary assessment and intervention prioritization.	Monitoring for cardiac arrhythmias directly supports "Circulation."
Medical Complications of Anorexia	Bradycardia, hypotension, arrhythmias, electrolyte imbalances, refeeding syndrome.	BMI of 14.2 and electrolyte imbalance signal high risk for these complications.
Nursing Process: Prioritization	Assess for immediate threats to life first, then address other problems.	Life-threatening cardiac risk is the #1 priority nursing problem.

Side-by-Side Comparison!

Intervention Type	Timing & Purpose	Example	Priority Level in Acute Crisis
Physiological / Safety	Immediate. To prevent death or permanent harm.	Cardiac monitoring, IV electrolyte replacement.	HIGHEST
Psychological / Therapeutic	After stabilization. To address the root cause of the illness.	Building rapport, cognitive behavioral therapy (CBT).	Secondary
Educational / Informational	During recovery phase. To promote long-term health management.	Nutritional counseling, meal planning.	Tertiary

Anatomy, Physiology & Pharmacology Points

• Cardiac Physiology: Severe malnutrition leads to loss of cardiac muscle mass, decreased cardiac output, and bradycardia. Electrolytes like potassium (3.5-5.0 mEq/L) and magnesium are critical for myocardial depolarization and repolarization. Imbalances (Hypokalemia, Hypomagnesemia) can cause lethal arrhythmias (e.g., Torsades de pointes).
• Refeeding Syndrome: A critical complication to anticipate. Rapid nutritional replenishment in a starved patient can cause a shift of electrolytes (especially phosphate, potassium, magnesium) into cells, leading to dangerously low serum levels, fluid overload, and cardiac failure.

Memory Tips

• Acronym: "S.A.F.E. MIND" – For Eating Disorders, address Stabilization & ABCs First, then Engage the MIND.
• Visual: Picture the heart rhythm on a monitor. If the line is flat (arrest), no other therapy matters. This reinforces that cardiac safety is the absolute foundation.

High-Frequency NCLEX Topics The NCLEX-RN loves to test prioritization and client safety in scenarios where psychological and physiological needs compete. Eating disorder questions almost always have a distractor that is a valid psychological intervention, but you must choose the answer that addresses the immediate life-threatening physical risk first (e.g., cardiac monitoring, electrolyte correction, suicide precautions).

Watch Out for Question Variations!

• Shift in Focus: The same client, one week later, now medically stable. The question might then ask: "Which intervention is the priority?" The correct answer would shift to options like "Establish a therapeutic contract for meal consumption" or "Begin cognitive-behavioral therapy."
• Lab Value Focus: A question might provide specific abnormal lab values (K+ = 2.8 mEq/L) and ask for the priority nursing action, which would be cardiac monitoring and preparing for IV potassium replacement.

Nursing Clinical Practice Guide Clinical Scenario: You are the nurse on a medical unit admitting "Chloe," an 18-year-old with anorexia nervosa. She is cachectic, weak, and her skin is cool and dry. Her vital signs are: BP 84/50, HR 44, RR 12, Temp 35.8°C (96.4°F). She admits to drinking only water for the past 3 days.

Nursing Intervention Strategy:

1. Immediate Assessment (First 5-15 mins): Connect to continuous cardiac monitor and pulse oximeter. Obtain STAT electrolytes (especially K+, Mg++, Phos), CBC, and ECG. Perform a focused cardiovascular and respiratory assessment.
2. Safety & Monitoring: Place the client on close observation, possibly 1:1 supervision, to ensure she does not engage in secretive exercise or purging. Monitor for signs of arrhythmia on the cardiac monitor. Strictly monitor intake and output (I&O) and daily weights (in a gown, after voiding, same scale).
3. Collaborative Care: Prepare for orders: IV access for fluid and electrolyte replacement (using a pump to control rate to prevent fluid overload), and possibly a nasogastric (NG) tube for feeding if oral intake is refused. Anticipate and prevent refeeding syndrome by starting nutrition slowly and replacing electrolytes proactively.
4. Therapeutic Communication: While providing physical care, use a calm, non-judgmental, and matter-of-fact approach. Acknowledge her fear and anxiety about weight gain without agreeing with the distorted thoughts. Set clear, consistent limits regarding meal requirements.

Patient Safety and Precautions:

• Contraindications: Do not force a high-calorie meal immediately. Do not leave the client alone during or after meals (risk of purging). Do not make comments about her body shape or weight.
• Medication Cautions: If medications are needed, be aware of altered pharmacokinetics due to low body fat and muscle mass. Cardiac medications (e.g., for bradycardia) must be used with extreme caution.
• Key Monitoring Points: Heart rate and rhythm, orthostatic vital signs, lung sounds (for crackles indicating fluid overload from refeeding), electrolyte trends, and signs of edema.

Nursing Procedure & Medication Flow Managing IV Electrolyte Replacement (e.g., Potassium):

• Principle: IV potassium MUST be diluted and infused via an infusion pump. Never give IV push potassium—it can cause cardiac arrest.
• Rate Limit: Typically, no more than Key Point! 10 mEq per hour via peripheral line (may be higher via central line per protocol). Monitor the IV site closely for phlebitis.
• Monitoring: Continuous cardiac monitoring is mandatory during infusion. Monitor serum potassium levels frequently.

Initiating Nutritional Support:

• Refeeding Protocol: Start with low-calorie intake (e.g., 1200 kcal/day) and increase gradually. Provide thiamine, multivitamin, and phosphate supplements before or with the start of feeding.
• Meal Supervision: A nurse or aide should sit with the client for a specified time (e.g., 60 minutes) after each meal and snack to prevent purging. Bathroom use may be restricted during this time.

A Word from Your Senior Nurse "Caring for a patient with severe anorexia is one of the most challenging and delicate situations in nursing. Your medical knowledge saves their life, but your compassion saves their spirit. Remember, their refusal to eat is not defiance—it's a symptom of a profound illness. In moments of frustration, take a breath and remember your ABCs: Always Be Caring, but also Always Be Checking that rhythm strip! Your vigilant monitoring and calm presence in those first critical hours create the safe container in which healing, both physical and emotional, can eventually begin. On the NCLEX, they're testing if you know to save the heart before healing the mind."