ATI RN
Pathophysiology Practice Questions
1. A patient is diagnosed with type 2 diabetes mellitus. Which of the following is a common initial treatment strategy?
- A. Insulin therapy
- B. Lifestyle modification and metformin
- C. Sulfonylureas
- D. Thiazolidinediones
Correct answer: B
Rationale: The correct answer is B: Lifestyle modification and metformin. When managing type 2 diabetes mellitus, initial treatment often involves lifestyle changes such as adopting a healthy diet and increasing physical activity, along with the oral medication metformin. Insulin therapy (choice A) is usually reserved for cases where lifestyle changes and oral medications are not sufficient to control blood sugar levels. Sulfonylureas (choice C) and thiazolidinediones (choice D) are also oral medications used in diabetes management, but they are not typically recommended as first-line treatments due to various side effects and considerations in type 2 diabetes management.
2. A patient receiving isoniazid (INH) and rifampin (Rifadin) has a decreased urinary output and decreased sensation in his great toes. Which laboratory values should be assessed?
- A. Hematocrit and hemoglobin
- B. ALT and AST
- C. Urine culture and sensitivity
- D. Erythrocyte count and differential
Correct answer: C
Rationale: In a patient receiving isoniazid (INH) and rifampin (Rifadin) with symptoms of decreased urinary output and decreased sensation in great toes, assessing urine culture and sensitivity is crucial. These symptoms could indicate peripheral neuropathy, a known side effect of isoniazid, and rifampin can cause renal toxicity. Checking for any urinary tract infection or drug-induced nephrotoxicity is important. Choices A, B, and D are incorrect as they do not directly address the symptoms presented by the patient or the potential side effects of the medications mentioned.
3. Which of the following disturbances would cause a client to experience gout?
- A. Serotonin receptors
- B. Uric acid metabolism
- C. Liver function
- D. Cardiac function
Correct answer: B
Rationale: Gout is caused by a disturbance in uric acid metabolism, leading to the accumulation of uric acid crystals in joints. Serotonin receptors (Choice A) are not related to gout. Liver function (Choice C) is important for metabolism but is not directly linked to gout development. Cardiac function (Choice D) is primarily related to the heart's functioning and not associated with gout.
4. A patient with a history of osteoporosis is prescribed raloxifene (Evista). What is the primary therapeutic action of this medication?
- A. It stimulates the formation of new bone.
- B. It decreases bone resorption and increases bone density.
- C. It increases calcium absorption in the intestines.
- D. It increases the excretion of calcium through the kidneys.
Correct answer: B
Rationale: The correct answer is B: 'It decreases bone resorption and increases bone density.' Raloxifene, as a selective estrogen receptor modulator (SERM), works by reducing bone resorption (breakdown) and maintaining or increasing bone density. This mechanism helps in preventing further bone loss and can even increase bone mass. Choices A, C, and D are incorrect. Raloxifene does not stimulate the formation of new bone (choice A), increase calcium absorption in the intestines (choice C), or increase the excretion of calcium through the kidneys (choice D).
5. Which information would indicate more teaching is needed regarding hypersensitivity reactions? Type _______ hypersensitivity reactions involve an antibody response.
- A. I
- B. II
- C. III
- D. IV
Correct answer: D
Rationale: The correct answer is D: Type IV hypersensitivity reactions involve cell-mediated immunity, not an antibody response. This question tests knowledge of hypersensitivity reactions and their classification. Type I hypersensitivity reactions involve IgE antibodies, Type II involves IgG or IgM antibodies, and Type III involves immune complex deposition. Type IV hypersensitivity reactions are delayed and involve T cells, not antibodies. Therefore, if a person believes that Type IV hypersensitivity reactions involve an antibody response, more teaching is required.
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