A nurse is collecting data from an older client for signs of dehydration. Which of the following findings should the nurse consider an expected part of the aging process?

A. Decreased impulse conduction speed

Aging causes slower nerve conduction due to loss of myelin and reduced neurotransmitter activity, leading to slower reflexes and response times.

B. Atherosclerosis and decreased cellular respiration

These factors affect circulation and energy production but are not primary causes of slowed neurologic responses.

C. Inadequate tissue oxygenation

Can affect brain function acutely, but it's not the main cause of chronic, gradual slowing in the elderly.

D. Loss of neurons in the brain

While this occurs with aging, slowed reflexes are more specifically linked to nerve impulse transmission rather than neuron quantity alone.

A. Arthritis

Arthritis, especially osteoarthritis, is the most common cause of functional limitation and disability among older adults.

B. Urinary tract infection

While common in the elderly, UTIs are typically acute conditions and not a leading cause of long-term disability.

C. Macular degeneration

Though this affects vision and can cause impairment, it is less common than arthritis and does not affect mobility.

D. Pressure ulcers

These result from immobility, rather than causing it, and are more of a complication than a primary cause of disability.