What role do the kidneys have in the pharmacokinetics process?
Excretion
Absorption
Metabolism
Distribution
The Correct Answer is A
A) Excretion:
This is the correct answer. The kidneys play a crucial role in the excretion of drugs and their metabolites from the body. After drugs undergo metabolism in the liver or other tissues, the resulting metabolites are often water-soluble and can be filtered by the kidneys into the urine. This process helps eliminate drugs and their byproducts from the body, preventing their accumulation and potential toxicity.
B) Absorption:
Absorption refers to the movement of drugs from the site of administration into the bloodstream. While the kidneys do not directly facilitate drug absorption, they may indirectly influence drug absorption by regulating blood flow and systemic circulation.
C) Metabolism:
Metabolism, or biotransformation, involves the enzymatic alteration of drugs into metabolites, which are often more water-soluble and easier to excrete. While the liver is the primary site of drug metabolism, the kidneys do not play a direct role in drug metabolism.
D) Distribution:
Distribution refers to the movement of drugs from the bloodstream to various tissues and organs in the body. While the kidneys do not directly influence drug distribution, changes in renal function can affect drug distribution by altering blood flow and plasma protein binding. However, the primary role of the kidneys in pharmacokinetics is excretion, not distribution.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A) Bicarbonate:
While bicarbonate levels may be relevant in some cases, they are not typically a primary consideration before administering furosemide. Furosemide primarily affects electrolyte balance, particularly potassium and sodium, rather than bicarbonate levels.
B) Potassium:
This is the correct answer. Before administering furosemide, it is essential to review the client's potassium levels because furosemide is a loop diuretic that can lead to potassium depletion. Monitoring potassium levels helps prevent hypokalemia, which can lead to cardiac dysrhythmias and other complications, especially in clients with heart failure.
C) Phosphate:
Phosphate levels are not typically a primary concern before administering furosemide. Furosemide primarily affects sodium and potassium levels rather than phosphate levels.
D) Carbon dioxide:
Carbon dioxide levels are not typically a primary consideration before administering furosemide. Furosemide primarily affects electrolyte balance rather than carbon dioxide levels.
Correct Answer is ["100"]
Explanation
We are given the following information:
Medication: Ticarcillin/clavulanate 3.1 g
Administration route: Intermittent IV bolus over 30 minutes
Available solution: Ticarcillin/clavulanate 3.1 g in 50 mL 0.9% sodium chloride (NSS)
However, the IV pump controls the rate of delivery over time (usually in hours). An intermittent bolus means the medication is infused all at once over a shorter period (30 minutes in this case).
The pump rate calculation here focuses on the total volume of the available solution containing the medication to be delivered, not necessarily on the medication amount itself.
Therefore, we need to find the rate at which the total volume of 50 mL solution should be delivered over 30 minutes.
Conversion is necessary because pump rates are typically set in hours (hr).
Time (hours) = 30 minutes / 60 minutes/hour = 0.5 hours
Now, calculate the flow rate:
Flow rate (mL/hr) = Total volume (mL) / Infusion time (hours)
Flow rate (mL/hr) = 50 mL / 0.5 hours = 100 mL/hr
Round to the nearest whole number as requested.
Therefore, the nurse should set the pump to deliver approximately 100 mL/hr. This ensures the total 50 mL solution containing the 3.1 g of ticarcillin/clavulanate is delivered over the intended 30-minute period.
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