NCLEX Quiz: GI and Renal Insights

A patient with Crohn's disease is experiencing a flare-up. Which of the following management strategies should be prioritized to reduce inflammation and promote healing?

• Increase dietary fiber intake

• Administer corticosteroids

• Encourage high-fat diet

• Provide laxatives

A patient with chronic renal failure is being assessed. Which laboratory value is most critical to monitor for evaluating the progression of renal failure?

• Serum calcium

• Blood urea nitrogen (BUN)

• Serum creatinine

• Hemoglobin

Answer explanation

Serum creatinine is the most critical laboratory value for evaluating the progression of chronic renal failure (CRF) because it directly reflects glomerular filtration rate (GFR) and kidney function.

Why Serum Creatinine is the Best Indicator:

• Creatinine is a waste product from muscle metabolism that is excreted solely by the kidneys.

• As renal function declines, creatinine levels increase, indicating worsening kidney function.

• Serum creatinine is used to estimate GFR, which helps stage chronic kidney disease

• Normal creatinine levels:

  • Men: 0.6 - 1.2 mg/dL

  • Elevated levels (>1.5 mg/dL) suggest impaired kidney function.

• Serum Calcium ❌

  • Incorrect because while calcium levels can be affected in CRF due to impaired vitamin D activation, it is not the primary marker of renal function. Incorrect because while BUN increases in renal failure, it is not as specific as creatinine.

  • BUN ❌ is influenced by hydration, diet, and liver function, making it a less reliable indicator of kidney function than creatinine.

In managing a patient with celiac disease, which nutritional adjustment is essential to prevent malabsorption and promote intestinal healing?

• High-protein diet

• Gluten-free diet

• Low-sodium diet

• High-calcium diet

Answer explanation

The only effective treatment for celiac disease is lifelong adherence to a gluten-free diet. This prevents intestinal damage, improves nutrient absorption, and reduces complications such as osteoporosis, anemia, and malnutrition. while protein is essential for overall health, protein intake does not directly address the underlying issue in celiac disease.

• A high-protein diet will not stop the immune response caused by gluten ingestion.

A patient with acute renal failure is experiencing fluid overload. Which intervention should be prioritized to restore fluid balance?

• Administer diuretics

• Increase fluid intake

• Provide potassium supplements

• Encourage bed rest

A patient is prescribed a proton pump inhibitor (PPI) for gastroesophageal reflux disease (GERD). What is the primary effect of this medication on the gastrointestinal system?

• Increases gastric acid production

• Decreases gastric acid secretion

• Enhances gastric motility

• Neutralizes stomach acid

A patient with end-stage renal disease is being educated on dietary restrictions. Which nutrient should be limited to prevent complications?

• Protein

• Carbohydrates

• Fats

• Fiber

Answer explanation

In end-stage renal disease (ESRD), protein intake must be limited to reduce the buildup of nitrogenous waste products, such as urea, which the kidneys can no longer effectively excrete. Excess protein metabolism worsens azotemia (high blood urea nitrogen levels), leading to symptoms like nausea, confusion, and fatigue.

Why Protein Restriction is Necessary:

• Damaged kidneys in ESRD cannot filter waste products effectively, leading to uremia (toxic accumulation of nitrogenous waste).

• A low-protein diet can help slow disease progression and reduce symptoms.

• However, once a patient starts dialysis, protein intake should be increased to compensate for protein loss during dialysis.

A patient with ulcerative colitis is experiencing severe diarrhea. Which dietary modification should be recommended to manage this symptom?

• High-fiber diet

• Low-residue diet

• High-fat diet

• Low-protein diet

Answer explanation

A low-residue diet is recommended for patients with ulcerative colitis (UC) experiencing severe diarrhea because it reduces fiber and bulk, decreasing stool frequency and irritation to the inflamed colon.

Why a Low-Residue Diet is Beneficial:

• Ulcerative colitis (UC) is a chronic inflammatory bowel disease (IBD) that affects the large intestine and causes symptoms like diarrhea, abdominal pain, and rectal bleeding.

• A low-residue diet reduces bowel movements and minimizes irritation to the inflamed mucosa.

• Recommended low-residue foods:

  • White rice, pasta, and refined grains

  • Cooked vegetables without skin or seeds

  • Lean proteins (chicken, turkey, fish)

  • Dairy in small amounts if tolerated

In a patient with chronic kidney disease, which electrolyte imbalance is most likely to occur and requires careful monitoring?

• Hypercalcemia

• Hyperkalemia

• Hypoglycemia

• Hyponatremia

A patient with peptic ulcer disease is prescribed an H2 receptor antagonist. What is the expected therapeutic effect of this medication?

• Increase gastric motility

• Reduce gastric acid secretion

• Neutralize stomach acid

• Promote gastric emptying

A patient with renal failure is advised to monitor fluid intake. Which of the following is a strategic approach to ensure proper fluid balance?

• Drink fluids only when thirsty

• Measure and record all fluid intake and output

• Avoid all fluid intake

• Increase fluid intake during meals