What factor has the most impact on the pharmacokinetic phase of distribution?
Low albumin
Renal disease
Hepatic disease
An elevated gastric pH
The Correct Answer is A
A) Low albumin: This factor has the most impact on the pharmacokinetic phase of distribution. Albumin is a key protein in the blood that binds to many medications. When albumin levels are low, fewer drug molecules will be bound, leading to an increased concentration of free (unbound) drug in the bloodstream. This can result in enhanced drug effects or toxicity, as the unbound drug is pharmacologically active and more readily able to cross cell membranes.
B) Renal disease: While renal disease can impact drug elimination and excretion, it does not have as direct an effect on the distribution phase of pharmacokinetics. Renal function primarily affects the clearance of drugs from the body rather than how the drug is distributed within the tissues.
C) Hepatic disease: Hepatic disease can affect the metabolism of drugs and their clearance, but it does not directly affect the distribution phase. While the liver is involved in metabolizing drugs, it is the ability to clear or process the drug that is most influenced, rather than its distribution to tissues.
D) An elevated gastric pH: Elevated gastric pH (which can occur with antacid use or in certain conditions) can affect the absorption of some medications but has minimal direct impact on the distribution phase of pharmacokinetics. Distribution is primarily concerned with how a drug moves from the bloodstream into tissues, and this is more influenced by factors like blood flow, protein binding, and the drug's lipophilicity, rather than the pH of the stomach.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["4"]
Explanation
Identify the desired dose: The doctor has ordered 40 mg of atorvastatin.
Identify the available tablet strength: Each tablet contains 10 mg of atorvastatin.
Set up the calculation: We need to find out how many tablets are needed to administer 40 mg of the medication.
We can use the following formula:
(Desired dose) / (Tablet strength) = Number of tablets
Plug in the values and calculate:
(40 mg) / (10 mg/tablet) = 4 tablets
Correct Answer is B
Explanation
A) Right dose: The right dose was administered. The order specifies 1000 mg of
acetaminophen, and the nurse gave 1000 mg. Therefore, the right dose was given, and this is not the issue in this situation.
B) Right route: The right route was not followed in this situation. The order specifies that acetaminophen should be administered IV, but the nurse administered the medication PO. The route of administration is crucial for ensuring the medication is delivered in the appropriate manner for the intended therapeutic effect. By giving the medication orally instead of intravenously, the nurse deviated from the prescribed route, which is a violation of the "right route."
C) Right reason: The right reason was followed because acetaminophen is commonly given for pain or fever management, and no information suggests the wrong reason for administering the drug. The nurse's action doesn’t indicate a mistake in the reasoning for giving the medication.
D) Right time: The right time is not affected here, as the nurse did administer the acetaminophen at the scheduled time. The issue is with the route, not the timing.
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