NURS 510 Nursing Research Methods

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) Management of inflammatory process

Explanation:

Pharmacologic doses of glucocorticoids (such as prednisone or dexamethasone) are used primarily for their anti-inflammatory and immunosuppressive effects. They are commonly prescribed to manage inflammation in conditions like asthma, rheumatoid arthritis, lupus, inflammatory bowel disease, and allergic reactions. These doses are higher than physiological replacement levels and help suppress the inflammatory response and modulate immune system activity.

Why the other options are incorrect:

A) Immune system activation:

Glucocorticoids do the opposite—they suppress the immune system, making them useful in autoimmune conditions and transplant patients to prevent rejection.

B) Cortisol replacement in adrenal insufficiency:

This refers to physiologic doses, not pharmacologic ones. Lower doses are used for hormone replacement in conditions like Addison’s disease.

D) Tight glycemic control:

Glucocorticoids can actually raise blood glucose levels, leading to hyperglycemia, especially with long-term use. They are not used to manage blood sugar.

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: D) Cortisol

Explanation:

Cortisol, the end product of the hypothalamic-pituitary-adrenal (HPA) axis, regulates its own production through negative feedback. When cortisol levels rise, it signals the hypothalamus to decrease secretion of corticotropin-releasing hormone (CRH) and the anterior pituitary to decrease secretion of adrenocorticotropic hormone (ACTH). This, in turn, reduces further cortisol production by the adrenal cortex.

Why other options are wrong:

A) Corticotropin releasing hormone (CRH):

CRH is secreted by the hypothalamus and stimulates the anterior pituitary to release ACTH, which increases cortisol production—not inhibit it.

B) Adrenocorticotropic hormone (ACTH):

ACTH is secreted by the anterior pituitary and stimulates the adrenal cortex to produce cortisol, so it does not inhibit cortisol secretion.

C) Antidiuretic hormone (ADH):

ADH plays a role in water balance and vasoconstriction, not cortisol regulation. It is not part of the HPA axis.

Correct Answer: B) The drug impacts many factors including the natural hormone GLP-1 to increase insulin production.

Explanation:

B) Semaglutide is a GLP-1 receptor agonist, meaning it mimics the action of the natural hormone glucagon-like peptide-1 (GLP-1). It helps manage type 2 diabetes and promotes weight loss by:

Stimulating glucose-dependent insulin secretion

Suppressing glucagon release

Slowing gastric emptying, which promotes satiety and reduces appetite

Reducing food intake, contributing to weight loss

These combined effects help lower blood glucose and promote weight reduction, making it a valuable therapy in T2DM and obesity management.

Why the other options are incorrect:

A) This drug is safe for the client who is pregnant:

Semaglutide is not recommended during pregnancy. There is limited human data, and it is generally discontinued if pregnancy is confirmed.

C) The drug is used for T1DM most of the time:

Semaglutide is not approved for use in Type 1 diabetes, which requires insulin replacement, as T1DM patients lack endogenous insulin production.

D) The blood sugar does not need to be monitored as closely as other medication:

Although semaglutide has a lower risk of causing hypoglycemia (especially when used alone), blood glucose monitoring is still important, especially if used with other agents like sulfonylureas or insulin.

Correct Answer: E)

Explanation:

A greenstick fracture is a type of incomplete fracture in which the bone bends and cracks on one side but does not break completely through—similar to bending a green twig. It is most common in children due to their softer, more flexible bones. In the illustration, E clearly shows a bent bone with a partial break on one side, consistent with the appearance of a greenstick fracture.

Why the other options are incorrect:

A) Shows a comminuted fracture, where the bone is broken into multiple pieces.

B) Shows a transverse fracture, a straight horizontal break across the bone.

C) Shows an oblique fracture, which runs at an angle to the bone’s axis.

D) Shows a segmental fracture, with two separate breaks creating a floating segment.

F) Shows a spiral fracture, which wraps around the bone, usually caused by twisting force.

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: B) "Fiber can exacerbate your constipation if you do not drink at least 8 glasses of water daily."

Explanation:

Bulk-forming fiber supplements, such as psyllium (Metamucil), work by absorbing water in the intestines to form a soft, bulky stool that is easier to pass. However, if the client does not consume enough water, the fiber can harden in the intestines and worsen constipation or cause a blockage. Therefore, it is essential to increase fluid intake—typically at least 8 glasses (about 2 liters) of water per day—when using fiber supplements.

Why other options are wrong:

A) "Bulk-forming agents decrease the absorption of nutrients..."

This is misleading. Fiber may slightly affect absorption of some nutrients, but not enough to require a daily multivitamin unless there are other dietary concerns.

C) "If you take fiber long term, you can become dependent on it..."

Unlike stimulant laxatives, bulk-forming fiber does not cause dependence. It is often recommended for long-term use in managing chronic constipation.

D) "Your bowel regimen will improve if you delay responding to your urge to defecate."

Delaying the urge can actually worsen constipation by weakening the natural defecation reflex and causing stool to become harder and drier.

Correct Answer: B) Increased creatinine

Explanation:

Creatinine is a waste product of muscle metabolism that is filtered by the kidneys. When the glomerular filtration rate (GFR) decreases, the kidneys are less effective at filtering creatinine from the blood, leading to elevated serum creatinine levels. This makes increased creatinine a key marker of impaired kidney function.

Why other options are wrong:

A) Decreased BUN:

Blood urea nitrogen (BUN) typically increases, not decreases, with a drop in GFR, as the kidneys become less able to excrete urea.

C) Decreased white blood cell count:

WBC count is not directly related to GFR. It may change due to infection, immune suppression, or bone marrow disorders but is not a marker of kidney filtration.

D) Increased red blood cell count:

Clients with chronic kidney disease often have anemia (low RBC count) due to decreased erythropoietin production by the kidneys. An increase in RBCs is not expected with decreased GFR.