Nokea
You have developed a nursing diagnosis of Imbalanced Nutrition: Less than Body Requirements for a hospitalized patient with AIDS who has anorexia and nausea. Which of these nursing actions is most appropriate to delegate to an LPN who is providing care to this patient?
- A. Administer oxandrolone (Oxandrin) 5 mg daily in morning.
- B. Provide oral care with a soft toothbrush every 8 hours.
- C. Instruct the patient about a high-calorie,high-protein diet.
- D. Assess the patient for other nutrition risk factors.
Correct Answer: B
Rationale: Providing oral care is a routine task that can be safely delegated to an LPN. Administering medications instructing about diet and assessing nutrition risk factors require more advanced knowledge and skills which are typically within the scope of an RN.
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Vertebrate eyes are Single-lens eyes with
- A. Light is focused by the curved cornea and lens
- B. Changing the shape of the lens focuses near and far
- C. Photoreceptor cells in the retina detect light
- D. All above
Correct Answer: D
Rationale: The correct answer is D because vertebrate eyes have single-lens eyes where light is focused by the curved cornea and lens (A), and changing the shape of the lens allows for focusing at different distances (B). Additionally, photoreceptor cells in the retina detect light (C). Therefore, all of the above statements are true, making D the correct choice. Choice A is incorrect because it does not encompass the entire process of vision in vertebrate eyes, missing the role of changing the lens shape. Choice B is incorrect as it only addresses the lens shape without mentioning the role of the cornea in focusing light. Choice C is incorrect as it only focuses on the function of photoreceptor cells in the retina without considering the lens and cornea's role in focusing light.
The nurse is counseling a group of individuals over the age of 50 with average risk for cancer about screening tests for cancer. Which screening recommendation should be performed to screen for colorectal cancer?
- A. Barium enema every year
- B. Colonoscopy every 10 years
- C. Fecal occult blood every 5 years
- D. Annual prostate-specific antigen (PSA) and digital rectal exam
Correct Answer: B
Rationale: Colonoscopy every 10 years is recommended for colorectal cancer screening in individuals over 50 with average risk.
Tolerogenic dendritic cells
- A. Induce T cell unresponsiveness
- B. Do not secrete IL-12
- C. Express high levels of co-stimulatory molecules
- D. Have recognized PAMPs
Correct Answer: E
Rationale: I apologize, but it seems like there was a mistake in the question. The correct answer is not provided as choice "E." Could you please provide the correct choices for the question so I can provide you with the detailed explanation you are looking for?
T cells can recognize
- A. Linear peptides
- B. The shape of antigens
- C. Buried epitopes
- D. Soluble antigens
Correct Answer: B
Rationale: The correct answer is B: The shape of antigens. T cells recognize antigens based on their shape, specifically the conformational structure of the antigen. T cell receptors interact with the surface of antigens, forming a complex based on the shape complementarity. This interaction is crucial for T cell activation and immune response.
A: Linear peptides - While T cells can recognize linear peptides presented by MHC molecules, the primary mode of recognition is through the shape of antigens.
C: Buried epitopes - T cells typically recognize epitopes displayed on the surface of antigens rather than buried within the structure.
D: Soluble antigens - T cells can recognize both soluble and membrane-bound antigens, but the key factor is the shape rather than the solubility of the antigen.
What treatment is commonly used for anaphylaxis?
- A. Antihistamines only
- B. Epinephrine
- C. Corticosteroids only
- D. Antibiotics
Correct Answer: B
Rationale: The correct answer is B: Epinephrine. Epinephrine is the first-line treatment for anaphylaxis as it rapidly reverses the symptoms by constricting blood vessels, relaxing airway muscles, and increasing heart rate. It is crucial in preventing severe complications and can be life-saving. Antihistamines (choice A) only target histamine effects, which are not sufficient in managing anaphylaxis. Corticosteroids (choice C) are used as adjunct therapy but are not as immediate or critical as epinephrine. Antibiotics (choice D) are not indicated for anaphylaxis treatment. Therefore, epinephrine is the most appropriate choice for managing anaphylaxis effectively.