Nursing Process Practice Questions

Correct Answer: A

Rationale: The correct answer is A: It inhibits deoxyribonucleic acid (DNA) synthesis. Mitomycin works by cross-linking DNA, leading to inhibition of DNA synthesis and ultimately causing cell death. This mechanism of action makes it effective against rapidly dividing cancer cells. B: It�s cell cycle-phase specific - This is incorrect because mitomycin is not specific to a particular phase of the cell cycle. C: It inhibits ribonucleic acid (RNA) synthesis - This is incorrect as mitomycin primarily targets DNA synthesis, not RNA synthesis. D: It inhibits protein synthesis - This is incorrect as mitomycin's main mechanism of action is through DNA cross-linking, not protein synthesis inhibition.

Correct Answer: C

Rationale: The correct answer is C: fluid volume deficit. In diabetes insipidus, there is an excessive amount of dilute urine excreted, leading to dehydration and fluid volume deficit. The posterior pituitary tumor causes a deficiency in antidiuretic hormone (ADH), which regulates water reabsorption in the kidneys. As a result, the client experiences polyuria and polydipsia, leading to fluid volume deficit. Choices A, B, and D are incorrect because diabetes insipidus does not cause fluid volume excess, incontinence, or diarrhea. The key is to recognize the pathophysiology of diabetes insipidus and its impact on fluid balance.

Correct Answer: B

Rationale: The correct answer is B because the internal mammary and internal thoracic arteries in the chest are commonly used for grafting due to their size, durability, and long-term patency. These arteries have a better track record for successful grafting procedures compared to the other options. The basic and cephalic veins in the arm (Option A) are typically used for venous procedures, not arterial grafting. The saphenous vein in the leg (Option C) is also commonly used for grafting, but the internal mammary and internal thoracic arteries are preferred for their better outcomes. The radial artery in the arm (Option D) is less commonly used for grafting compared to the internal mammary and internal thoracic arteries.

Correct Answer: C

Rationale: Correct Answer: C - ACTH Rationale: 1. ACTH (adrenocorticotropic hormone) can help control symptoms and induce remission in multiple sclerosis by reducing inflammation. 2. ACTH stimulates the production of cortisol, a natural anti-inflammatory hormone. 3. By reducing inflammation in the central nervous system, ACTH can help manage symptoms and promote remission. Summary of other choices: A: Acyclovir - Antiviral medication used to treat herpes infections, not effective for multiple sclerosis. B: Thyrotropin - Hormone that stimulates thyroid function, not used in the treatment of multiple sclerosis. D: Benadryl - Antihistamine used for allergies and itching, not indicated for multiple sclerosis management.

Correct Answer: B

Rationale: The correct answer is B: Aldosterone. Aldosterone is a hormone produced by the adrenal glands that helps regulate sodium and water balance in the body. It acts on the kidneys to increase reabsorption of sodium, leading to water retention and increased blood volume. This helps maintain blood pressure and electrolyte balance. A: Antidiuretic hormone (ADH) mainly acts on the kidneys to increase water reabsorption, not sodium retention. C: Thyroid hormone does not directly influence sodium retention. D: Insulin regulates blood sugar levels by promoting glucose uptake, it does not have a direct role in sodium retention.