A frail older resident in a long-term care setting becomes increasingly irritable and naps during the day. Which body system is most implicated in this behavioral change?

A frail older resident in a long-term care setting becomes increasingly irritable and naps during the day. Which body system is most implicated in this behavioral change?

• A. Immune
• B. Neurological
• C. Respiratory
• D. Musculoskeletal

Answer: (B)

Changes in behavior and increased daytime napping in an elderly, frail resident point to alterations in brain function that regulate arousal, attention, and mood. The nervous system controls the sleep–wake cycle and how we respond to our environment, so when it’s not functioning optimally—such as in delirium or neurodegenerative processes—the result can be irritability and daytime sleepiness. While infections, respiratory issues, or musculoskeletal pain can contribute to fatigue or discomfort, they don’t directly govern behavior and wakefulness the way the nervous system does. Therefore, the neurological system is the most implicated in this behavioral change. If delirium is a concern, assess for acute changes in mental status, attention, and awareness, and review medications and potential triggers.

Changes in behavior and increased daytime napping in an elderly, frail resident point to alterations in brain function that regulate arousal, attention, and mood. The nervous system controls the sleep–wake cycle and how we respond to our environment, so when it’s not functioning optimally—such as in delirium or neurodegenerative processes—the result can be irritability and daytime sleepiness. While infections, respiratory issues, or musculoskeletal pain can contribute to fatigue or discomfort, they don’t directly govern behavior and wakefulness the way the nervous system does. Therefore, the neurological system is the most implicated in this behavioral change. If delirium is a concern, assess for acute changes in mental status, attention, and awareness, and review medications and potential triggers.