Which of the following is the most reliable early indicator of infection in a client with low WBC?
Fever
Chills
Tachycardia
Dyspnea
The Correct Answer is A
Choice A rationale:
Fever is the most reliable early indicator of infection in a client with low WBC because it is a direct physiologic response to the presence of pathogens. When the body detects an infection, it releases pyrogens, which act on the hypothalamus to raise the body's temperature. This elevated temperature helps to create an environment that is less hospitable to bacteria and viruses, and it also stimulates the immune system to fight the infection.
In clients with low WBC, the immune system is already compromised, so the fever response may be even more pronounced. It's important to note that even a slight elevation in temperature (as low as 100.4°F or 38°C) can be significant in these clients.
Choice B rationale:
Chills can also be a sign of infection, but they are not as specific as fever. Chills can occur for other reasons, such as exposure to cold or anxiety.
Choice C rationale:
Tachycardia, or increased heart rate, can also be a sign of infection, but it is not as reliable as fever. Tachycardia can occur for other reasons, such as dehydration, pain, or anxiety.
Choice D rationale:
Dyspnea, or shortness of breath, is not a typical early sign of infection. It is more likely to occur in later stages of infection, when the infection has spread to the lungs.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The correct answer is A. Exercise.
Choice A: Exercise Exercise is generally beneficial for overall health and is not typically a factor that exacerbates systemic lupus erythematosus (SLE). In fact, regular physical activity can be an important part of the overall treatment plan for individuals with SLE. It can boost energy levels, improve joint flexibility, and help alleviate stress. Therefore, if a patient with SLE identifies exercise as a factor that can exacerbate their condition, it indicates a need for further teaching.
Choice B: Diet Certain diets can potentially trigger or worsen SLE symptoms. For instance, a chemical found in alfalfa may trigger lupus symptoms, so patients may want to avoid eating alfalfa sprouts or taking supplements with alfalfa. Therefore, diet is a correct factor that can exacerbate SLE.
Choice C: Sunlight Exposure to sunlight can trigger or worsen SLE symptoms. For those with lupus, being in the sun can lead to symptoms like skin rashes, itching, burning, joint pain, weakness, and fatigue. In certain cases, it can also result in damage to internal organs. Therefore, sunlight is a correct factor that can exacerbate SLE.
Choice D: Infection Infections can trigger or worsen SLE symptoms. Rates of infections are higher among persons with SLE compared with the general population. Therefore, infection is a correct factor that can exacerbate SLE.
Correct Answer is ["8"]
Explanation
Step 1: Determine the desired dose in mL.
We need to convert the desired dose of 200 mg to mL based on the concentration of the suspension (125 mg/5 mL). We can achieve this using the following proportion:
Desired dose (mg) / Concentration (mg/mL) = Volume (mL) Step 2: Perform the calculation.
Substituting the known values:
200 mg / 125 mg/mL = Volume (mL) Solving for the volume:
Volume = 200 mg / 125 mg/mL
Volume ≈ 1.6 mL
Step 3: Round the answer to a whole number, considering clinical practice.
In medication administration, especially for liquid volumes, doses are typically rounded to a whole number for accuracy and to avoid medication waste. Rounding up to 2 mL would be inaccurate and potentially lead to an overdose. Therefore, we round down to the nearest whole number, which is 1 mL.
Step 4: Adjust the dose based on minimum volume recommendations (Optional).
Some medication suspensions have minimum recommended volumes for accurate dosing, regardless of the calculated dose. Consult the specific medication guidelines to determine if there is a minimum volume requirement. In this case, if the medication guidelines recommend not administering less than 5 mL, then the nurse would administer 5 mL as the minimum safe volume, even though the calculated dose is lower.
Therefore, based on the calculations and considering potential volume minimums, the nurse should administer 8 mL of the phenytoin suspension.
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