Phenytoin (Dilantin) suspension 200 mg is prescribed for a client with epilepsy.The suspension contains 125 mg/5 ml. How much solution should the nurse administer? Record your answer using a whole number.
The Correct Answer is ["8"]
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
Magnet activation: Placing a magnet over the implantable device activates an on-demand feature of the VNS, delivering extra stimulation to the vagus nerve. This can potentially disrupt or shorten a seizure, especially when used at the onset of an aura (a warning sign that a seizure may be imminent).
Patient empowerment: Teaching the patient how to use the magnet provides them with a sense of control and a way to actively manage their seizures. It can reduce anxiety and improve quality of life.
Choice B rationale:
Microwave safety: While there's no definitive evidence that microwaves directly interfere with VNS devices, manufacturers generally recommend avoiding close or prolonged exposure to microwaves as a precaution. Specific guidelines may vary, but they often suggest keeping a distance of at least 15-20 inches from microwaves. The statement in Choice B about 12,000 watts or less is inaccurate and misleading.
Choice C rationale:
CT scans with contrast: There's no contraindication for patients with VNS to undergo CT scans with contrast. The device is designed to withstand common imaging procedures.
Choice D rationale:
Pain management: Burst catheters are typically used for pain management after surgery or during childbirth. They have no direct relevance to VNS therapy or seizure management.
Correct Answer is A
Explanation
Choice A rationale:
Hydroxychloroquine can cause a rare but serious side effect called bone marrow suppression. This is a decrease in the production of blood cells in the bone marrow.
White blood cells (WBCs) are a key component of the immune system, and a decrease in WBCs can make a patient more susceptible to infections.
Therefore, it's crucial for nurses to monitor the patient's WBC count to detect any potential bone marrow suppression early and take necessary actions to prevent or manage infections.
Choice B rationale:
An increased blood cell count is not a typical side effect of hydroxychloroquine.
Some conditions, like polycythemia vera, can cause an increase in blood cell count, but they are not related to hydroxychloroquine use.
Choice C rationale:
While hydroxychloroquine can sometimes cause a decrease in platelet count, it's less common than bone marrow suppression affecting WBCs.
However, it's still essential for nurses to monitor platelet counts as well, as a significantly low platelet count can impair blood clotting and increase the risk of bleeding.
Choice D rationale:
Hydroxychloroquine does not typically affect red blood cell (RBC) counts.
Conditions that affect RBC counts, such as anemia, are not directly related to hydroxychloroquine use.
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