Special Populations Primary Care for the Advanced Practice Nurse (D120)

Correct answer C. Vitamin C

Explanation:

Vitamin C plays a crucial role in wound healing because it is essential for collagen synthesis, a key component of skin and connective tissue repair. It also acts as an antioxidant and helps in immune function, reducing the risk of infection in healing wounds. Citrus fruits, such as oranges, lemons, and grapefruits, are rich sources of vitamin C, making them beneficial for wound recovery.

Why other options are wrong:

A. Vitamin A. While vitamin A is important for skin health and immune function, it is not the primary vitamin involved in collagen formation and wound healing like vitamin C.

B. Vitamin B12. Vitamin B12 is essential for nerve function and red blood cell production, but it does not play a direct role in collagen synthesis and wound healing.

D. Vitamin D. Vitamin D is necessary for bone health and calcium absorption but does not significantly contribute to wound healing or collagen formation.

Correct answer B. 12 g/dL to 16 g/dL

Explanation:

The normal hemoglobin range for adult females is 12-16 g/dL, which reflects the amount of oxygen-carrying protein in the blood. Levels below this may indicate anemia, while levels above the normal range may suggest conditions such as polycythemia.

Why other options are wrong:

A. 5 g/dL to 10 g/dL. This range is too low and would indicate severe anemia, leading to symptoms such as fatigue, pallor, and shortness of breath.

C. 15 g/dL to 30 g/dL. While the lower end (15 g/dL) is within normal limits, values reaching 30 g/dL are excessively high and not physiologically typical in adults.

D. 17 g/dL to 25 g/dL. Hemoglobin levels above 16 g/dL in females are considered elevated and could suggest conditions like dehydration, chronic lung disease, or polycythemia vera.

Correct answer:

A. Administer phosphate supplements as prescribed

Explanation:

A serum phosphorus level of 1.5 mg/dL is below the normal range (2.5 to 4.5 mg/dL) and indicates hypophosphatemia, which is commonly seen in clients with chronic alcoholism. Alcoholism can cause malnutrition, poor phosphate absorption, and increased renal losses of phosphate. Severe hypophosphatemia can lead to muscle weakness, confusion, respiratory depression, and cardiac dysfunction. Administering phosphate supplements as prescribed helps restore phosphorus levels and prevent complications.

Why other options are wrong:

B. Monitor the client for signs of renal failure

Although phosphorus imbalances can occur with renal failure, chronic kidney disease usually leads to hyperphosphatemia (high phosphorus levels) due to decreased excretion. In this case, the client's low phosphorus level is more likely due to chronic alcoholism and malnutrition, not renal failure. Monitoring kidney function is important, but it is not the priority intervention.

C. Educate the client on dietary sources of phosphorus

While dietary phosphorus intake is important, food sources alone may not be sufficient to correct severe hypophosphatemia. Clients with chronic alcoholism often have poor dietary intake and absorption, making supplementation the primary intervention. Education on phosphorus-rich foods (dairy, nuts, meats) is useful but should be secondary to immediate correction.

D. Assess the client for symptoms of hyperparathyroidism

Hyperparathyroidism typically leads to hypercalcemia and hypophosphatemia due to increased phosphorus excretion by the kidneys. However, in this client, chronic alcoholism is the most likely cause of the low phosphorus level, not a parathyroid disorder. While it is essential to assess for underlying causes, treating the immediate deficiency takes precedence.

Correct answer B. Vitamin B12

Explanation:

Vitamin B12 is primarily found in animal-derived foods such as meat, dairy, eggs, and fish. Since plant-based foods do not naturally contain significant amounts of B12, vegans are at high risk for deficiency. A lack of B12 can lead to pernicious anemia, neurological symptoms, and fatigue. Vegans often need to obtain B12 from fortified foods or supplements to maintain adequate levels.

Why other options are wrong:

A. Vitamin A

Vitamin A is found in both animal and plant sources. While animal-based sources provide retinol (preformed vitamin A), plant-based foods such as carrots, sweet potatoes, and leafy greens contain beta-carotene, which the body can convert into vitamin A. Therefore, vegans can obtain sufficient vitamin A from plant sources.

C. Vitamin C

Vitamin C is abundant in plant-based foods such as citrus fruits, bell peppers, strawberries, and leafy greens. Since it is widely available in a vegan diet, deficiency is uncommon among vegans.

D. Vitamin D

While vitamin D is found in some animal products, the body primarily synthesizes it through sun exposure. Additionally, vitamin D-fortified plant-based foods and supplements are available, making deficiency preventable for vegans.

Correct answer A: Because kidney disease leads to decreased urine output and fluid retention.

Explanation:

Clients with kidney disease are at higher risk for fluid volume excess because their kidneys lose the ability to effectively filter and excrete excess fluid. As kidney function declines, urine output decreases, leading to fluid accumulation in the body. This can result in complications such as hypertension, pulmonary edema, and heart failure. Managing fluid intake and monitoring for signs of overload, such as swelling and shortness of breath, are essential for these clients.

Why other options are wrong:

B. Because diuretics increase fluid loss and prevent excess fluid retention.

While this statement is true about diuretics, it does not answer the question regarding kidney disease. Diuretics work by promoting urine production and reducing fluid volume, making them beneficial for conditions like hypertension and heart failure. However, in kidney disease, the kidneys may not respond effectively to diuretics, leading to persistent fluid retention despite treatment.

C. Because kidney disease causes increased thirst and fluid intake.

While some clients with kidney disease may experience increased thirst, this is not the primary reason for fluid volume excess. The key issue is the inability of the kidneys to eliminate excess fluid, not simply the intake of fluids. Even with normal or restricted fluid intake, fluid overload can still occur due to reduced kidney function.

D. Because diuretics can cause electrolyte imbalances that lead to fluid retention.

Diuretics can cause electrolyte imbalances, such as low potassium or sodium, but they do not typically lead to fluid retention. Instead, they are used to remove excess fluid from the body. Fluid retention in kidney disease is primarily due to the impaired ability of the kidneys to excrete water and sodium effectively.

Correct answer B. Because it suggests an increased risk of infection due to low immunity.

Explanation:

A white blood cell (WBC) count of 2,000/mm³ is significantly lower than the normal range (4,000–11,000/mm³) and indicates neutropenia, a condition in which the body has an insufficient number of neutrophils to fight infections. Cancer treatments, such as chemotherapy, can suppress bone marrow function, leading to low WBC counts and increased susceptibility to infections. Neutropenic precautions include strict hand hygiene, avoiding raw or unpasteurized foods, limiting exposure to sick individuals, and using protective isolation measures to reduce infection risk.

Why other options are wrong:

A. Because it indicates a normal immune response.

A WBC count of 2,000/mm³ is not within the normal range and does not indicate a healthy immune response. Instead, it signals a weakened immune system, putting the client at a higher risk of developing serious infections. A normal immune response would typically involve WBC levels within the standard range and the ability to fight off infections effectively.

C. Because it shows the client is recovering from treatment.

A low WBC count does not indicate recovery; rather, it suggests that the client's immune system is compromised, likely as a result of ongoing or recent chemotherapy. While WBC counts may eventually rise as bone marrow function recovers, a count as low as 2,000/mm³ requires immediate precautions rather than being viewed as a sign of improvement.

D. Because it is a common side effect of chemotherapy.

While it is true that chemotherapy often causes neutropenia, simply recognizing it as a side effect is not sufficient reasoning for implementing neutropenic precautions. The key reason for taking precautions is the increased risk of life-threatening infections due to the immune system's inability to fight pathogens effectively. Nurses must take proactive measures to protect the client, rather than just acknowledging the side effect

Correct Answer A. Instruct the client to take the medication only when they have food available.

Explanation:

Glipizide is a sulfonylurea that stimulates insulin release from the pancreas. It lowers blood sugar levels but can cause hypoglycemia, particularly if a meal is skipped. Since the client is homeless and may have irregular access to food, it is crucial to instruct them not to take the medication on an empty stomach to avoid severe hypoglycemia, which can lead to confusion, seizures, or loss of consciousness.

Why other options are wrong:

B. Advise the client to stop taking the medication if they feel dizzy.

While dizziness can be a symptom of hypoglycemia, instructing the client to completely stop taking Glipizide without consulting a healthcare provider could lead to uncontrolled hyperglycemia and long-term complications such as diabetic ketoacidosis (DKA) or neuropathy. Instead, they should be advised to monitor for symptoms of hypoglycemia and eat regularly.

C. Encourage the client to take the medication with a full glass of water.

While taking medications with water is generally good practice, it is not the most critical instruction for Glipizide. The priority is ensuring food intake, as Glipizide can cause severe hypoglycemia if taken on an empty stomach. Simply drinking water does not prevent low blood sugar.

D. Inform the client that they can share the medication with others if they are not using it.

This is unsafe and unethical. Glipizide is prescribed based on an individual's blood sugar levels, kidney function, and overall health condition. Sharing medications can lead to serious health risks, including life-threatening hypoglycemia in people for whom the medication was not intended.

Correct Answer B. Legumes

Explanation:

Clients with cirrhosis of the liver are at risk for thiamine (vitamin B1) deficiency, especially if they have alcohol-related liver disease. Thiamine is essential for energy metabolism and nerve function, and its deficiency can lead to Wernicke’s encephalopathy, a serious neurological disorder. Legumes (such as beans, lentils, and peas) are a rich source of thiamine and are beneficial for these patients.

Why other options are wrong:

A. Rice.

White rice contains very little thiamine, as most of it is lost during the refining process. Brown rice has more thiamine, but it is not the richest source compared to legumes.

C. Spinach.

While spinach is a good source of iron and folate, it is not particularly high in thiamine. It does not provide enough B1 to help prevent thiamine deficiency in cirrhotic patients.

D. Fish.

Fish contains some thiamine, but it is not as high as legumes. Some raw fish can actually contain thiaminase, an enzyme that breaks down thiamine, making it a less reliable source.

Correct answer B. It causes a decrease in red blood cell production due to lack of iron.

Explanation:

Iron is essential for hemoglobin synthesis, which enables red blood cells to transport oxygen. In iron deficiency anemia, the body lacks sufficient iron to produce adequate hemoglobin, leading to a reduction in red blood cell count and lower hemoglobin levels. This condition is common in adult female clients due to menstrual blood loss, pregnancy, and inadequate dietary intake of iron.

Why other options are wrong:

A. It leads to increased fluid retention, diluting the blood.

While fluid retention can affect blood volume, it does not cause anemia. Anemia results from a lack of hemoglobin production rather than blood dilution.

C. It results in increased oxygen demand, raising hemoglobin levels.

In iron deficiency anemia, hemoglobin levels drop because the body cannot produce enough red blood cells, even if oxygen demand increases. The body compensates with increased heart rate and respiration, but hemoglobin does not rise.

D. It is linked to chronic dehydration, which concentrates hemoglobin.

Dehydration can cause hemoconcentration, temporarily increasing hemoglobin levels. However, iron deficiency anemia is due to insufficient iron, which directly impairs hemoglobin production.