NURS 510 Nursing Research Methods

Correct Answer: C) 25-year-old female receiving chemotherapy for cancer

Explanation:

Intra-renal (intrinsic) acute kidney injury (AKI) results from direct damage to the kidney tissue itself, including the glomeruli, tubules, or interstitium. Certain chemotherapy drugs, such as cisplatin and methotrexate, are known to be nephrotoxic, particularly to the renal tubules. These agents can cause acute tubular necrosis, a common form of intra-renal injury. Patients receiving chemotherapy must be monitored closely for signs of renal dysfunction.

Why the Other Options Are Wrong:

A) 54-year-old male with bladder cancer:

Bladder cancer is more likely to cause post-renal AKI due to obstruction of urine flow, not intra-renal damage.

B) 65-year-old male with benign prostatic hyperplasia:

BPH can lead to urinary outflow obstruction, increasing the risk of post-renal AKI, especially if there’s significant retention and backflow pressure on the kidneys.

D) 36-year-old female with renal artery stenosis:

Renal artery stenosis reduces blood flow to the kidney, which may lead to pre-renal AKI, particularly if prolonged. However, unless ischemia progresses to the point of tissue death, it does not directly cause intra-renal injury.

Correct Answer: D) "It is important to maintain adequate nutrition, including a high-protein diet to support wound healing."

Explanation:

D) Adequate nutrition and a high-protein diet are essential after surgery to promote tissue repair, collagen synthesis, and immune function, all of which are vital for wound healing, especially in obese clients, who are at increased risk for wound dehiscence, infection, and delayed healing. Protein helps rebuild tissue and supports the healing process at the cellular level.

Why the other options are incorrect:

A) "You should avoid taking pain medication to prevent constipation.":

While constipation is a valid concern, pain management is essential for mobility and deep breathing. Constipation can be managed with stool softeners and hydration, not by withholding pain relief.

B) "You should rest and avoid moving around too much to prevent strain on your incision.":

Prolonged immobility increases the risk of venous thromboembolism and respiratory complications. Clients should be encouraged to mobilize early, while avoiding strenuous activity.

C) "You may return to your normal activity level once you feel comfortable at home.":

This is too vague and may lead to premature overexertion. Activity should be gradually resumed based on medical advice and the nature of the surgery.

Correct Answer: B) Compound

Explanation:

A compound fracture (also called an open fracture) occurs when the broken bone pierces through the skin, exposing the fracture to the external environment. This type of fracture carries a high risk of infection, soft tissue damage, and complications such as delayed union or nonunion, all of which can significantly prolong the healing process. Treatment often requires surgical intervention, antibiotic therapy, and extended recovery time.

Why the other options are incorrect:

A) Undisplaced:

An undisplaced fracture means the bone remains aligned, making it generally easier and faster to heal with immobilization alone. There’s typically no surgical intervention required.

C) Greenstick:

Common in children, a greenstick fracture is incomplete—the bone bends and cracks on one side. Due to children’s strong healing capacity and the limited severity of the fracture, healing is usually quick and uncomplicated.

D) Oblique:

An oblique fracture runs diagonally across the bone. While it may need stabilization (e.g., casting or sometimes surgery), it typically heals faster than a compound fracture as long as it is properly aligned and infection-free.

Correct Answer: C) Lithium is classified as a mood stabilizer

Explanation:

Lithium is a well-established mood stabilizer used primarily in the treatment of bipolar disorder, especially for managing manic and depressive episodes. It helps regulate mood swings and is one of the most effective long-term treatments for this condition.

Why other options are wrong:

A) Regular blood levels are not needed when lithium is used:

This is false. Lithium has a narrow therapeutic index, and regular monitoring of serum lithium levels is essential to avoid toxicity, which can cause tremors, confusion, seizures, and even death.

B) Lithium is used only for anxiety:

Lithium is not typically used to treat anxiety as a primary indication. While it may indirectly reduce anxiety by stabilizing mood in bipolar disorder, its main use is not anxiety treatment.

D) Lithium has no interactions with other drugs so it is safe to use with all prescriptions:

Lithium interacts with several medications, including NSAIDs, diuretics, and ACE inhibitors, all of which can increase lithium levels and risk of toxicity. Clients must report all medications to their provider.

Correct Answer: A) "This is normal because it typically takes 3-6 weeks for medications for depression to reach full therapeutic effect."

Explanation:

A) Antidepressants, such as SSRIs, SNRIs, or tricyclics, generally take 3 to 6 weeks to produce noticeable improvement in mood and energy. It is important to educate the client that symptom relief is not immediate and that patience and adherence are key during the early phase of treatment. Some clients may notice early changes in sleep or appetite, but full therapeutic effects take time.

Why the other options are incorrect:

B) "Your symptoms should have improved by now...":

This statement is inaccurate and misleading. It may cause unnecessary concern or mistrust, as 7 days is too early to judge effectiveness.

C) "Clients who do not have symptom relief in 5-7 days usually need to be placed on a different medication.":

This is incorrect. Medication changes are not considered until a full trial period (usually 4–6 weeks) is completed unless side effects are severe.

D) "Any symptoms that remain after 7 days will be permanent.":

This is false and inappropriate. Most depressive symptoms are reversible with proper treatment and time. This response may unnecessarily discourage the client.

Correct Answer: B) Prostaglandins are causing the upward displacement of the thermostatic set point

Explanation:

Pyrexia (fever) develops when endogenous pyrogens—such as interleukin-1 (IL-1), IL-6, and tumor necrosis factor (TNF)—are released in response to infection or inflammation. These pyrogens stimulate the hypothalamus to produce prostaglandin E2 (PGE2). PGE2 then acts on the hypothalamus to elevate the body’s thermostatic set point, leading the body to initiate heat-generating behaviors like shivering and vasoconstriction, which raise core temperature to match the new set point.

Why the other options are incorrect:

A) The hypothalamus is synthesizing and releasing TRH to inhibit heat dissipating behaviors:

Thyrotropin-releasing hormone (TRH) stimulates TSH release for thyroid hormone regulation, not directly involved in fever development or heat conservation behaviors.

C) The anterior pituitary is releasing ACTH to stimulate heat generating behaviors:

ACTH is involved in the stress response and cortisol production, not directly in fever induction or thermoregulation.

D) Leukotrienes are stimulating epinephrine and thyroxine to increase basal metabolic rate:

Leukotrienes are inflammatory mediators, but they are not key players in pyrexia development, and this statement inaccurately links them to hormonal effects not central to the fever mechanism.

Correct Answer: C) "The usual dose of medication may be too large for your liver."

Explanation:

The liver is a major organ responsible for metabolizing many medications. In liver disease, hepatic function is reduced, which can lead to slower metabolism and clearance of drugs, increasing the risk of toxicity. As a result, doses often need to be reduced to prevent medication buildup in the body. The nurse's response should help the client understand that the adjustment is for safety due to impaired liver function.

Why other options are wrong:

A) "You should really ask your health care provider.":

This avoids the question and misses a teaching opportunity. Nurses are responsible for reinforcing and explaining provider decisions in understandable terms.

B) "The HCP is afraid you will become dependent on the medications.":

This is speculative and unrelated to the reason for dose adjustment in liver disease, which is about impaired metabolism, not dependency.

D) "The affinity of the medication changes with liver disease.":

"Affinity" refers to a drug’s binding strength to a receptor, which is not the primary concern in liver disease. The issue is reduced metabolic capacity, not altered drug-receptor interaction.

Correct Answer: D) Nephrolithiasis

Explanation:

D) Nephrolithiasis: This condition involves the formation of kidney stones which can obstruct the ureters or other parts of the urinary tract, blocking urine flow. This causes back pressure on the nephrons and collecting system, impairing glomerular filtration and potentially leading to hydronephrosis (swelling of the kidney due to urine buildup). Because the dysfunction originates after the kidney, it is classified as a post-renal cause of acute kidney injury. If untreated, it can lead to permanent kidney damage.

Why the other options are incorrect:

A) Congestive heart failure:

This is a pre-renal cause of renal dysfunction. In CHF, the heart's reduced pumping ability lowers renal perfusion pressure, leading to decreased glomerular filtration rate (GFR). The kidneys themselves are structurally intact, but they receive insufficient blood to function effectively.

B) Hypovolemia:

Also a pre-renal cause. Conditions like dehydration, hemorrhage, or shock lead to low circulating blood volume, which reduces perfusion to the kidneys. Like CHF, this affects the blood supply to the kidneys, not the urinary tract or kidney tissue directly.

C) Nephrotoxic drugs:

These are a primary intra-renal cause. Medications such as aminoglycosides, NSAIDs, or contrast agents can cause direct injury to renal tissues, including the tubules and glomeruli, leading to acute tubular necrosis or other forms of intrinsic renal failure.

Correct Answer: C) Shock

Explanation:

A comminuted fracture involves the bone being broken into three or more fragments, typically caused by high-energy trauma, such as a fall or motor vehicle accident. While it is a serious injury, the presence of shock is not commonly associated with isolated extremity fractures, such as one in the right arm. Shock, which is a systemic condition involving inadequate tissue perfusion, typically results from massive blood loss, severe trauma, or internal injury—scenarios more typical in pelvic fractures, bilateral femur fractures, or polytrauma, not single limb fractures.

Why the other options are more likely:

A) Ecchymosis:

Bruising or discoloration of the skin (ecchymosis) around the site of the fracture is common. It occurs due to bleeding from soft tissue and blood vessels damaged by bone fragments. In comminuted fractures, with multiple sharp bone ends, this is an expected finding.

B) Crepitus:

Crepitus is a hallmark sign of fractures involving unstable bone fragments. In a comminuted fracture, the broken pieces may grind against each other, producing a grating sound or sensation upon palpation or movement. This is commonly noted during physical assessment.

D) Deformity:

Comminuted fractures often result in visible or palpable deformity due to misalignment of multiple bone pieces and disruption of normal anatomical contours. The limb may appear shortened, angulated, or irregular, which is a significant indicator of bone injury.