Which other assessment technique(s) can the nurse use to identify the potential source of the client's new onset confusion and decreased appetite? Select all that apply.

A. Perform a 12-lead electrocardiogram: Cardiac arrhythmias or ischemic events can present subtly in older adults with confusion, weakness, or decreased appetite rather than classic chest pain. Performing a 12-lead ECG helps identify cardiac causes such as atrial fibrillation, myocardial infarction, or conduction abnormalities that may contribute to acute cognitive changes. B. Collect a sputum and urine culture: In older adults, infections such as urinary tract infections or respiratory infections often present atypically, sometimes manifesting primarily as confusion or decreased appetite rather than fever or classic symptoms. Obtaining cultures helps identify or rule out infectious sources contributing to the client’s acute mental status changes. C. Ask about the client's last bowel movement: Constipation or fecal impaction can lead to discomfort, anorexia, and even delirium in older adults. Assessing bowel habits helps identify gastrointestinal causes that may contribute to confusion and decreased appetite and guides timely interventions such as laxatives or dietary modifications. D. Measure the client's vital signs: Vital signs provide critical information about possible underlying infection, dehydration, or cardiovascular compromise. Fever, hypotension, tachycardia, or hypoxia can all contribute to acute confusion, making regular vital sign assessment an essential component of the evaluation. E. Ask to see the client's list of home medications: Polypharmacy and recent changes in medications are common contributors to acute confusion in older adults. Reviewing home medications helps identify drugs with anticholinergic effects, sedatives, or other agents that may impair cognition or appetite, and guides possible medication adjustments. F. Measure the client's abdominal circumference: Abdominal circumference measurement is primarily useful for assessing ascites or significant abdominal distention, which are less likely to be the initial cause of sudden confusion and decreased appetite. It is not a priority assessment in this context. G. Have the client ambulate across the room: While mobility assessment is important for fall risk, ambulation is not directly helpful in identifying the underlying cause of new-onset confusion or decreased appetite. The client’s cognitive status may limit safe participation, making this a lower-priority assessment at this stage.