A 70-year-old client living alone at home has been exhibiting increased confusion, agitation, and difficulty sleeping over the past week. The client frequently asks for deceased family members and becomes upset when told they are not available. What is the most important assessment the nurse should prioritize?

Acute confusion and agitation in elderly require immediate medical evaluation to rule out infections, metabolic issues, or drug effects. Depression assessment is important but secondary after medical causes are excluded.

Core Nursing Explanation Key Concept Analysis: This question tests the critical nursing principle of "Rule Out Medical Causes First" when assessing acute changes in mental status, especially in older adults. The core theme is Delirium versus Dementia or depression. The patient's symptoms—acute onset (over a week) of confusion, agitation, sleep disturbance, and misperceptions—are classic red flags for delirium. Delirium is a medical emergency often caused by an underlying condition like infection, metabolic imbalance, medication effect, or dehydration. The nurse's priority is to identify and treat the reversible cause.

Answer Rationale: Key Point! The most important initial assessment is a comprehensive physical examination (Option 1). This is the foundation for identifying potential medical causes of delirium. The exam should include vital signs (looking for fever, hypotension), neurological assessment, lung and heart sounds, abdominal exam, and inspection for signs of infection or pain. This action aligns with the nursing process: you must assess thoroughly before you can diagnose and plan. Ruling out life-threatening or easily treatable conditions is always the top priority.

Distractor Analysis:
Watch out for confusion! Option 2 (Evaluate medications) is a very important part of the assessment for delirium, but it is a component within the broader comprehensive evaluation. It is not the most important single action to prioritize first. A physical exam can reveal urgent signs (e.g., hypoxia, sepsis) that require immediate intervention before a detailed medication review is completed.
Option 3 (Assess for depression) addresses a possible differential diagnosis. However, depression typically has a more insidious onset and features like persistent low mood and anhedonia, not the acute confusion and agitation described. While important for holistic care, it is not the priority when acute delirium is suspected.
Option 4 (Review diet/hydration) is also a key assessment area, as dehydration and malnutrition can precipitate delirium. Again, this is a specific part of the overall assessment but not the broadest, most immediate priority. A physical exam will include assessing skin turgor, mucous membranes, and overall appearance, which provides direct clues about hydration.

Related Concepts: The mnemonic for common causes of delirium is "I WATCH DEATH": Infection, Withdrawal, Acute metabolic, Trauma, CNS pathology, Hypoxia, Deficiencies, Endocrinopathies, Acute vascular, Toxins/drugs, Heavy metals. A physical exam is the first step in investigating these causes.

Nursing Clinical Practice Guide Clinical Scenario: You are a home health nurse visiting Mr. Johnson, a 70-year-old with a history of hypertension and osteoarthritis. His daughter called, concerned because he is "not himself." You find him in his living room, restless, picking at his shirt. He looks at you and asks, "Where is my wife? She was just here making tea." His wife passed away two years ago. The house is warmer than usual, and you notice he has not taken out the trash. He seems slightly flushed.

Nursing Intervention Strategy: 1. Immediate Assessment (ABCs & Physical): First, ensure airway, breathing, circulation. Take vital signs—fever or hypotension would be critical findings. Perform a focused physical exam: listen to lung sounds (crackles? pneumonia?), check heart rhythm, palpate abdomen for distension or pain, assess skin for infection or poor turgor, and perform a neurological check. 2. Gather Data: While examining, ask about recent symptoms (pain, cough, urinary changes), review medications in the home, and quickly assess food/fluid availability. Check the environment for safety hazards. 3. Communication & Safety: Use a calm, reassuring tone. Reorient gently without arguing ("I'm Nurse Sarah, here to check on you today. Your daughter asked me to visit."). Ensure pathways are clear to prevent falls. 4. Action: Based on findings, you may need to contact the primary care provider for orders (e.g., urinalysis, blood work) or arrange transport to the ED if findings are acute (e.g., suspected UTI/sepsis, significant dehydration).

Patient Safety and Precautions: Never assume confusion is just "old age" or "sundowning" without a medical workup. In older adults, infections like UTIs often present atypically with confusion as the primary symptom, not fever or pain. Always assess for pain, as untreated pain can also manifest as agitation.
Nursing Procedure & Medication Flow When a change in mental status is detected: Procedure: 1. Ensure patient safety (bed alarms, low bed, supervision). 2. Perform focused physical assessment and vital signs. 3. Obtain orders for diagnostic tests: CBC, BMP, urinalysis and culture, chest X-ray if indicated. 4. Monitor intake and output strictly. 5. Implement non-pharmacological interventions for delirium: ensure glasses/hearing aids are used, provide clear orientation cues (clock, calendar), maintain day/night cycle. Medication Caution: Be extremely cautious with sedatives or antipsychotics for agitation; they can worsen delirium. They are used only as a last resort for severe agitation that poses a safety risk, at the lowest dose for the shortest time.
A Word from Your Senior Nurse "Remember, acute change equals acute cause. In the hospital or home, an elderly patient who becomes confused overnight is having a medical problem until proven otherwise. Your sharp assessment skills are the first line of defense. By prioritizing that physical exam, you're not just following a protocol—you're being a detective who might find a hidden UTI, early pneumonia, or a medication error that, if treated, can bring your patient back to themselves. That's the power of nursing assessment!"