A nurse is preparing to administer digoxin 5 mg PO to a client. The amount available is digoxin 0.5 mg/tablet. How many tablets should the nurse administer? (Round the answer to the nearest whole number, Use leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["10"]
Set up the dosage calculation:
Desired dose: 5 mg
Available dose: 0.5 mg/tablet
We need to find out how many tablets will contain 5 mg of digoxin.
Use the formula:
Number of tablets = Desired dose (mg) / Available dose (mg/tablet)
Plug in the values and calculate:
Number of tablets = 5 mg / 0.5 mg/tablet
Number of tablets = 10 tablets
Round to the nearest whole number:
10 tablets
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.75"]
Explanation
Given:
Ordered dose of Enoxaparin: 30 mg
Concentration of Enoxaparin: 40 mg/mL
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
30 mg / Volume = 40 mg/mL
Step 3: Solve for the unknown volume:
Volume = 30 mg / (40 mg/mL)
Volume = 30 mg x (1 mL / 40 mg)
Volume = 0.75 mL
Correct Answer is A
Explanation
A) Trough:
The trough level refers to the lowest serum concentration of a medication in the bloodstream, typically measured just before the next dose is administered. This point is crucial for ensuring that drug levels remain within the therapeutic range and for avoiding toxicity. Monitoring the trough level helps healthcare providers determine whether the medication is being cleared appropriately from the system and whether dosage adjustments are needed.
B) Peak:
The peak level is the highest concentration of the medication in the bloodstream, typically measured shortly after the medication is administered. This is the opposite of the trough level. The peak level is important for assessing the maximum therapeutic effect of the medication but does not reflect the lowest concentration.
C) Half-life:
The half-life of a medication is the time it takes for the serum concentration of the drug to decrease by half. While it provides useful information about how long a drug stays in the body, it is not related to the lowest concentration of the drug. The half-life influences dosing intervals but is not directly tied to the concept of trough levels.
D) Toxic:
Toxic levels refer to the concentration of a medication in the blood that is high enough to cause harmful effects or toxicity. This is the opposite of the trough level, which represents the lowest safe level of the drug in the system. Toxicity occurs when drug levels exceed the therapeutic range, posing a risk to the patient’s health.
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