The advanced practice nurse (APRN) is assessing the functional status of an older adult in the primary care office. While assessing vision the patient reports difficulty in seeing while reading. What is the most appropriate next step?

Lower extremity ulcers and skin changes can result from either arterial or venous circulation disorders, and distinguishing between them is essential for correct management. Chronic venous insufficiency occurs when venous valves fail, leading to venous hypertension, fluid leakage, and tissue changes in the lower legs. This condition commonly produces characteristic skin discoloration, edema, dermatitis, and medial ankle ulceration. Pulses are usually present because arterial flow is intact.

Rationale:
A. Chronic venous insufficiency is the most likely condition because it presents with normal or palpable peripheral pulses, brown hyperpigmentation from hemosiderin deposition, stasis dermatitis, and skin thickening (lipodermatosclerosis). Ulcers typically develop near the medial malleolus due to increased venous pressure and fluid leakage into surrounding tissues. The presence of a painless or mildly painful ulcer with intact pulses strongly supports venous rather than arterial pathology.

B. Chronic arterial insufficiency typically presents with diminished or absent pulses, cool extremities, pallor, and painful ischemic ulcers. These ulcers are usually located on distal areas such as toes or pressure points and have a “punched-out” appearance. The presence of +2 pedal pulses and brown pigmentation makes arterial insufficiency unlikely.

C. Acute arterial occlusion presents with sudden onset of the “6 Ps”: pain, pallor, pulselessness, paresthesia, paralysis, and poikilothermia. It is a medical emergency and does not present with chronic skin changes such as stasis dermatitis or hyperpigmentation. The chronic nature of symptoms in this case excludes acute arterial occlusion.

D. Compartment syndrome is characterized by severe pain out of proportion to injury, tense swollen compartments, and neurovascular compromise often following trauma or ischemia. It is an acute surgical emergency and does not present with chronic skin pigmentation changes or venous ulceration. The findings in this patient are consistent with a long-standing venous disorder rather than an acute compartment process.

Delirium and dementia are both cognitive disorders seen in older adults, but they differ significantly in onset, course, and level of consciousness. Delirium is an acute, reversible condition often triggered by medical illness, medications, or hospitalization. It is characterized by sudden onset, fluctuating symptoms, inattention, and altered awareness. Dementia, in contrast, is a chronic, progressive decline in cognitive function without changes in consciousness.

Rationale:
A. Gradual decline in memory over several years is more consistent with dementia rather than delirium. Dementia develops slowly and progressively, affecting memory, reasoning, and executive function over time. Delirium, however, has an acute onset and fluctuating course, making this option less supportive of delirium.

B. Depressed mood may be seen in both delirium and dementia, as well as in primary psychiatric conditions such as depression. While mood changes can accompany delirium, they are not a distinguishing feature. This finding does not strongly differentiate delirium from dementia.

C. Impaired recent memory is commonly seen in both delirium and dementia, making it a nonspecific finding. In delirium, memory impairment occurs due to inattention and fluctuating cognition, while in dementia it results from progressive neurodegeneration. Because it is shared by both conditions, it does not clearly distinguish between them.

D. Fluctuating level of consciousness is the hallmark feature that most strongly supports delirium. Patients may shift between hyperalert, lethargic, and disoriented states over short periods of time, often worsening at night (sundowning). This variability in awareness and attention is not seen in dementia, where consciousness remains clear until late stages.