ATI RN
ATI Fluid and Electrolytes
1. A nurse is caring for a patient who requires measurement of specific gravity every 4 hours. What does this test detect?
- A. Nutritional deficit
- B. Hyperkalemia
- C. Hypercalcemia
- D. Fluid volume status
Correct answer: D
Rationale: Specific gravity is a test used to determine the concentration of solutes in the urine, reflecting the kidney's ability to concentrate urine. Changes in specific gravity can indicate fluid volume status, such as dehydration (fluid volume deficit) or overhydration (fluid volume excess). Options A, B, and C are incorrect as specific gravity does not directly detect nutritional deficits, hyperkalemia, or hypercalcemia.
2. A client with diabetes mellitus has a foot ulcer. What is an appropriate intervention to promote wound healing?
- A. Encourage a high-protein diet
- B. Apply a moisture-retentive dressing
- C. Provide daily wound irrigation
- D. Apply an ice pack to the wound
Correct answer: B
Rationale: The correct answer is to apply a moisture-retentive dressing. This promotes a moist wound environment, which is crucial for wound healing in clients with diabetes. Encouraging a high-protein diet may support overall health but is not directly related to wound healing. Daily wound irrigation can disrupt the wound healing process by removing necessary growth factors and cells. Applying an ice pack to the wound is contraindicated as it can impair circulation and delay wound healing.
3. This is a chronic condition where the heart is unable to pump enough blood to meet the body's needs.
- A. Heart failure
- B. Cardiomyopathy
- C. Myocarditis
- D. Pericarditis
Correct answer: A
Rationale: The correct answer is A: Heart failure. Heart failure is a chronic condition characterized by the heart's inability to pump enough blood to meet the body's needs, resulting in symptoms such as fatigue, shortness of breath, and fluid retention. Choice B, Cardiomyopathy, refers to diseases of the heart muscle that can lead to heart failure but is not the specific term for the condition described. Choices C and D, Myocarditis and Pericarditis, respectively, are conditions involving inflammation of the heart muscle or the lining around the heart, which can cause heart failure as a complication but are not the primary condition described in the question.
4. Which type of immunity is demonstrated by the transfer of a mother's immunoglobulin across the placenta to protect the child?
- A. Natural active immunity
- B. Natural passive immunity
- C. Artificial active immunity
- D. Artificial passive immunity
Correct answer: B
Rationale: The immunoglobulin passed from the mother to the child through the placenta is an example of natural passive immunity, making choice B the correct answer. This transfer gives the child temporary immunity to various diseases without their immune system having to work. On the other hand, natural active immunity (Choice A) occurs when the body produces its own antibodies in response to an antigen. Artificial active immunity (Choice C) is achieved through vaccinations, where the immune system is stimulated to produce antibodies against a specific disease. Artificial passive immunity (Choice D) is a temporary immunity that involves the transfer of pre-formed antibodies from another source.
5. The public health nurse is presenting a health-promotion class to a group at a local community center. Which intervention most directly addresses the leading cause of cancer deaths in North America?
- A. Monthly self-breast exams
- B. Smoking cessation
- C. Annual colonoscopies
- D. Monthly testicular exams
Correct answer: B
Rationale: In North America, lung cancer is the leading cause of cancer deaths among both men and women, and the primary risk factor for lung cancer is smoking. Therefore, promoting smoking cessation is a critical public health intervention that directly addresses this significant health issue. By helping individuals quit smoking, healthcare providers can significantly reduce the incidence of lung cancer and associated deaths, making this intervention a priority in cancer prevention efforts.
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