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What is the role of a nurse during scratch test to detect allergies?
- A. Applying the liquid test antigen
- B. Determining the type of allergy
- C. Measuring the length and width of the
- D. Documenting the findings raised wheal
Correct Answer: A
Rationale: During a scratch test to detect allergies, one of the key roles of a nurse is to apply the liquid test antigen onto the patient's skin. The liquid test antigen contains small amounts of common allergens that could trigger a reaction in individuals who are allergic to them. By applying the test antigen onto the skin and creating small scratches or pricks, the nurse can observe if the patient develops a raised, red, itchy bump called a wheal at the site of the allergen exposure. This helps in identifying specific allergies and determining the appropriate treatment plan for the patient.
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The nurse is caring for a client in the emergency room diagnosed with Bell's palsy. The client has been taking acetaminophen (Tylenol), and acetaminophen overdose is suspected. The nurse anticipates that the antidote to be prescribed is:
- A. Pentostatin (Nipent)
- B. Fludarabine (Fludara)
- C. Auranofin (Ridaura)
- D. Acetylcysteine Mucomyst)
Correct Answer: D
Rationale: Acetylcysteine (Mucomyst) is the antidote for acetaminophen (Tylenol) overdose. If an overdose of acetaminincophen is suspected, acetylcysteine should be administered within 8-10 hours of ingestion to prevent liver damage and failure. Pentostatin, Fludarabine, and Auranofin are not antidotes for acetaminophen overdose and are used for other medical conditions.
Parents report that they have been giving a multivitamin to their 1-year-old infant. The nurse counsels the parents that which vitamin can cause a toxic reaction at a low dose?
- A. Niacin
- B. B
- C. D
- D. C
Correct Answer: C
Rationale: Vitamin D is a fat-soluble vitamin that can be toxic in high doses, leading to hypercalcemia. Infants are particularly vulnerable to vitamin D toxicity because they have a lower ability to excrete excess vitamin D. Symptoms of vitamin D toxicity include nausea, vomiting, weakness, and kidney problems. Therefore, it is important for parents to avoid giving high doses of vitamin D to infants and always follow healthcare provider recommendations for supplementation.
Which of the following parts of neuron transmits impulses away from the cell body?
- A. Dendrite
- B. Neurolemma
- C. Axon
- D. Synapse
Correct Answer: C
Rationale: The axon is the part of the neuron that transmits impulses away from the cell body. It is a long, slender extension of the neuron that conducts electrical signals known as action potentials to other cells. Dendrites, on the other hand, receive signals from other neurons and transmit them to the cell body. The neurolemma is a layer of cells surrounding the axon that facilitates nerve regeneration. The synapse is the junction between two neurons where signals are transmitted through neurotransmitters.
With pulmonary edema, there is usually an alteration in:
- A. Afterload
- B. Preload
- C. Contractility
- D. All of the above
Correct Answer: D
Rationale: Pulmonary edema is characterized by the accumulation of excess fluid in the lungs, which can lead to impaired gas exchange and respiratory distress. In the presence of pulmonary edema, there is usually an alteration in all three factors mentioned: afterload, preload, and contractility.
Blood and fluid loss from frequent diarrhea may cause hypovolemia and you can quickly assess volume depletion in Miss CC by:
- A. Measuring the quantity and specific gravity of her urine output
- B. Taking her blood pressure
- C. Comparing the patient's present weight with her last weight
- D. Administering the oral water test
Correct Answer: C
Rationale: Comparing the patient's present weight with her last weight is the best way to quickly assess volume depletion in Miss CC. As she has been experiencing frequent diarrhea leading to blood and fluid loss, changes in weight are a reliable indicator of changes in the body's fluid status. A significant decrease in weight would suggest a loss of fluid and potential hypovolemia due to the diarrhea. This method is simple, immediate, and directly reflects the impact of the fluid loss on the body's volume status. Measuring the quantity and specific gravity of her urine output could provide information on her kidney function but may not be as quick and direct in evaluating volume depletion as comparing her current weight with her last recorded weight. Taking her blood pressure is important in assessing overall cardiovascular status but may not be as immediate in reflecting the impact of fluid loss on volume status. Administering the oral water test is not a standard method for quickly assessing volume depletion in this scenario.