NURS 510 Nursing Research Methods

Correct Answer: A) Physiologic doses of glucocorticoids balance the feedback loop in clients with adrenal insufficiency.

Explanation:

A) Physiologic doses of glucocorticoids refer to the amount the body naturally produces, typically used in hormone replacement therapy for conditions such as Addison’s disease (adrenal insufficiency). These doses are meant to restore normal hormone levels and maintain metabolic, cardiovascular, and immune function, thereby supporting the hypothalamic-pituitary-adrenal (HPA) axis and its feedback loop.

Why the other options are incorrect:

B) Physiologic doses of glucocorticoids have the greatest impact on fluid and electrolyte balance:

This describes mineralocorticoids (like aldosterone), not glucocorticoids, which primarily affect glucose metabolism, immune modulation, and stress response.

C) Physiologic doses of glucocorticoids treat inflammatory disease in the body like Rheumatoid Arthritis:

Treating inflammation requires pharmacologic (higher-than-physiologic) doses of glucocorticoids. Physiologic doses are not sufficient for controlling inflammatory diseases.

D) Physiologic doses of glucocorticoids lower blood glucose in place of insulin:

Glucocorticoids actually raise blood glucose levels, so they are not used to replace insulin and would worsen hyperglycemia, especially in diabetics.

Correct Answer: B) Oral corticosteroids

Explanation:

B) Oral corticosteroids: These are least likely to be included in the early management of osteoarthritis (OA). Osteoarthritis is a non-inflammatory joint disease, and while corticosteroids have strong anti-inflammatory effects, they are not routinely used orally in OA due to limited benefit, potential systemic side effects, and better alternatives. Corticosteroids may be used in intra-articular injections for moderate-to-severe flares, but not as a first-line oral therapy.

Why the other options are more likely to be used:

A) NSAIDs:

These are commonly used to manage pain and inflammation associated with osteoarthritis. NSAIDs like ibuprofen or naproxen are first-line pharmacologic treatments, especially when acetaminophen is not sufficient.

C) Acetaminophen:

Often recommended as an initial analgesic due to its safety profile, especially in older adults or those at risk for gastrointestinal side effects from NSAIDs.

D) OTC topical creams:

Topical agents like capsaicin or NSAID-based creams (e.g., diclofenac gel) are helpful in localized joint pain, particularly for the hands and knees, and are commonly included early in conservative management plans.

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) "Your body effectively converts T4 into T3 so replacing T3 is unnecessary."

Explanation:

Levothyroxine (T4) is the standard treatment for hypothyroidism because the body has the ability to convert T4 into T3 (the active thyroid hormone) through enzymatic action in peripheral tissues. By replacing T4, the body naturally regulates how much T3 it needs, allowing for stable and physiologic hormone levels. This makes T4 replacement both effective and safe for most clients.

Why the other options are incorrect:

A) "T4 replacement does not require any TSH monitoring as is required with T3.":

TSH monitoring is still essential with T4 therapy to assess effectiveness and adjust dosage. TSH reflects the body's response to circulating thyroid hormone levels.

C) "T3 and T4 cannot be administered together because they will become inactive.":

This is not true. T3 and T4 can be given together (as in liotrix), though it is not commonly necessary. They do not deactivate each other when administered.

D) "Drug therapy does not replace T3 because it is the inactive precursor to T4.":

This is reversed. T4 is the inactive precursor, and T3 is the active hormone. The body's conversion of T4 to T3 is what makes levothyroxine therapy effective.

Correct Answer: B) "This medication decreases the production of uric acid."

Explanation:

Allopurinol is a xanthine oxidase inhibitor that works by reducing the production of uric acid, which helps prevent gout attacks and uric acid-related kidney stones. It is used as a long-term management strategy to maintain lower serum uric acid levels and is not meant for acute pain relief.

Why other options are wrong:

A) "This medication will target the inflammation and pain during an acute attack.":

Allopurinol does not treat acute gout attacks. In fact, initiating it during an acute flare can sometimes worsen symptoms. NSAIDs or colchicine are typically used to manage acute inflammation and pain.

C) "Kidney function tests are not necessary when using this medication.":

This is incorrect. Allopurinol is renally excreted, and doses must be adjusted in renal impairment. Routine monitoring of BUN, creatinine, and uric acid levels is essential to ensure safe and effective use.

D) "Limit fluid intake to 1000cc per day to prevent urinary incontinence.":

Fluid intake should not be restricted. In fact, adequate hydration is important to help flush uric acid from the body and reduce the risk of renal stones or nephrotoxicity. Limiting fluids can worsen the risk of complications.

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) Pre-renal

Explanation:

Pre-renal acute kidney injury (AKI) occurs due to reduced perfusion to the kidneys, leading to decreased glomerular filtration rate (GFR). In the context of GI bleeding, the client experiences significant blood volume loss, which can cause hypotension and decreased renal blood flow. If not corrected, this may result in ischemia and progression to more severe kidney injury.

Why the Other Options Are Wrong:

A) Intra-renal:

This refers to damage within the kidney tissue itself, such as in acute tubular necrosis (ATN), glomerulonephritis, or nephrotoxic injury. GI bleeding typically does not directly cause intrinsic damage unless prolonged hypoperfusion leads to ischemia-induced ATN, which is a secondary consequence.

B) Post-renal:

This type of AKI is due to obstruction of urine flow (e.g., from stones, tumors, or enlarged prostate). GI bleeding has no anatomical or functional relationship to urinary tract obstruction.

D) Extrinsic renal:

This is not a medically recognized category of AKI. The three accepted classifications are pre-renal, intra-renal, and post-renal.

Correct Answer: B) Give the client fruit juice with additional sugar

Explanation:

A blood sugar level of 50 mg/dL indicates hypoglycemia, a potentially dangerous condition requiring immediate intervention. Symptoms such as being cold, sweaty, and clammy are classic signs. The priority nursing action is to administer a fast-acting carbohydrate, such as fruit juice, to rapidly raise the client’s blood glucose level.

Why the other options are incorrect:

A) The blood sugar is normal; the client needs to drink water:

This is incorrect. A blood glucose of 50 mg/dL is not normal and can lead to serious complications if not treated promptly.

C) Give 5 units regular insulin:

Giving insulin would further lower the client’s already dangerously low blood sugar and could cause severe hypoglycemia or unconsciousness.

D) Call the health care provider:

While communication is important, this is not the priority action. Hypoglycemia is an emergency that should be treated immediately, not delayed for a provider response.

Correct Answer: D) Acid-base imbalance is a risk in patient with renal impairment

Explanation:

Metformin is primarily excreted unchanged by the kidneys. In patients with renal impairment, the drug can accumulate, increasing the risk for a rare but serious condition called lactic acidosis, a form of acid-base imbalance. Lactic acidosis is characterized by elevated lactate levels, low blood pH, and high anion gap metabolic acidosis. Although rare, it can be life-threatening and is more likely in individuals with reduced kidney function, making renal function monitoring essential when prescribing metformin.

Why other options are wrong:

A) This drug will not affect the kidney:

While metformin does not directly damage the kidneys, it is dependent on renal clearance. Therefore, stating it has no effect on the kidneys is misleading. Impaired renal function increases the risk of lactic acidosis due to drug accumulation.

B) Safe to use even with significant kidney dysfunction:

This is inaccurate. Metformin is contraindicated or used with caution in patients with moderate to severe renal impairment. The eGFR must be assessed before initiation, and use is typically avoided when eGFR is below 30 mL/min/1.73 m² due to the increased risk of lactic acidosis.

C) This drug can cause kidney failure:

Metformin is not nephrotoxic and does not directly cause kidney failure. However, it must be used with caution in patients who already have renal dysfunction, especially during contrast imaging or acute illnesses that can reduce renal perfusion.