A client with a sudden onset of big toe joint pain and swelling is diagnosed with gout. Which pathophysiologic process is producing the symptoms of gout?

Deposition of crystals in the synovial space of the joints produces inflammation and irritation.

Chondrocyte injury destroys joint cartilage, producing osteophytes and joint inflammation.

An immune complex and autoantibody deposition in connective tissue results in inflammation.

An autoimmune inflammation involving IgG response to an antigen causes joint destruction.

Answer and Explanation

The Correct Answer is A

Gout is a type of inflammatory arthritis caused by the deposition of monosodium urate crystals in the joints and surrounding tissues. Here's an explanation of the pathophysiological process producing the symptoms of gout:

A) Deposition of crystals in the synovial space of the joints produces inflammation and irritation:

Correct. In gout, elevated levels of uric acid in the blood lead to the formation and deposition of monosodium urate crystals in the synovial fluid of joints, particularly in the big toe joint (first metatarsophalangeal joint) in many cases. These crystals trigger an inflammatory response, activating immune cells and causing swelling, redness, warmth, and severe pain in the affected joint. The inflammation and irritation result from the body's immune response to the presence of these crystals.

B) Chondrocyte injury destroys joint cartilage, producing osteophytes and joint inflammation:

This option describes a process more characteristic of osteoarthritis, where degeneration of joint cartilage leads to the formation of osteophytes (bone spurs) and joint inflammation. Gout involves the deposition of urate crystals rather than direct chondrocyte injury.

C) An immune complex and autoantibody deposition in connective tissue results in inflammation:

This process describes the pathophysiology of autoimmune diseases such as rheumatoid arthritis, where immune complexes and autoantibodies contribute to inflammation and tissue damage. In gout, the inflammation is primarily triggered by the deposition of urate crystals rather than immune complex deposition.

D) An autoimmune inflammation involving IgG response to an antigen causes joint destruction:

This option describes the autoimmune process seen in diseases like rheumatoid arthritis, where antibodies target specific antigens, leading to joint destruction. Gout is not an autoimmune disease, and joint destruction in gout is primarily due to inflammation caused by urate crystal deposition rather than autoimmune mechanisms.

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Correct Answer is B

Explanation

Amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig's disease, is a progressive neurodegenerative disorder affecting motor neurons in the brain and spinal cord. Understanding the pathophysiological process of ALS is crucial for providing accurate information about the disease prognosis to the client. Here's why option B is the correct choice:

A) It occurs as a complication of a spinal cord injury:

This statement is incorrect. ALS is not a complication of a spinal cord injury. While both conditions involve motor neuron dysfunction, they have different etiologies and pathophysiological processes. ALS is characterized by the degeneration of motor neurons in the brain and spinal cord, leading to muscle weakness and atrophy, whereas spinal cord injury results from trauma to the spinal cord.

B) Muscle weakness is progressive, degenerative, and fatal:

Correct. ALS is characterized by progressive degeneration of motor neurons, leading to muscle weakness, atrophy, and eventual paralysis. The disease is relentless and fatal, typically within 2 to 5 years of diagnosis, although survival can vary widely among individuals. As motor neurons degenerate, voluntary muscle control is lost, eventually affecting the ability to speak, swallow, breathe, and move. Respiratory failure is the most common cause of death in ALS patients.

C) Mental status changes occur late in the disease:

While cognitive and behavioral changes can occur in some individuals with ALS, particularly in the later stages of the disease, they are not universal. ALS primarily affects motor neurons, leading to progressive muscle weakness and paralysis. However, some individuals may experience frontotemporal dementia (FTD), a type of cognitive impairment characterized by changes in behavior, personality, and language.

D) Autonomic nervous system and sensory changes occur:

ALS primarily affects motor neurons rather than sensory neurons or the autonomic nervous system. Sensory symptoms such as numbness, tingling, or loss of sensation are not typical features of ALS. Autonomic dysfunction, including changes in heart rate, blood pressure, or bowel and bladder function, is not a prominent feature of ALS.

A. Solute movement toward a solution with a higher concentration. B. Water movement toward a solution with a lower solute concentration. C. Blood cells and protein movement through the semipermeable membrane. D. Osmosis of water movement and diffusion of solute movement.

Correct Answer is D

Explanation

Hemodialysis is a renal replacement therapy used to remove waste products and excess fluid from the blood when the kidneys are unable to perform this function adequately. The physiological processes involved in hemodialysis include:

A) Solute movement toward a solution with a higher concentration:

While solute movement occurs during hemodialysis, it is typically from a solution with a higher concentration to one with a lower concentration, rather than the opposite. This movement facilitates the removal of waste products and excess solutes from the bloodstream.

B) Water movement toward a solution with a lower solute concentration:

Correct. Osmosis is the movement of water across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration. In hemodialysis, water moves out of the bloodstream, across the semipermeable membrane of the dialyzer, and into the dialysate solution, which has a lower solute concentration. This process helps remove excess fluid from the body.

C) Blood cells and protein movement through the semipermeable membrane:

Blood cells and proteins are too large to pass through the pores of the semipermeable membrane in the dialyzer during hemodialysis. Therefore, the primary exchange occurs between smaller molecules such as urea, creatinine, electrolytes, and water.

D) Osmosis of water movement and diffusion of solute movement:

Correct. Hemodialysis involves both osmosis and diffusion. Osmosis refers to the movement of water across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration. Diffusion is the movement of solutes from an area of higher concentration to an area of lower concentration. Together, these processes facilitate the removal of waste products and excess fluid from the bloodstream during hemodialysis.

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A client with a sudden onset of big toe joint pain and swelling is diagnosed with gout. Which pathophysiologic process is producing the symptoms of gout?

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Naxlex Comprehensive Predictor Exams

A client is diagnosed with amyotrophic lateral sclerosis (ALS). Which pathophysiological process should the nurse use when providing the client with information about this disease prognosis?

Correct Answer is B

Explanation

Which physiological process supports the exchange of blood concentrations across a semipermeable membrane in the hemodialysis?

Correct Answer is D

Explanation

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