1- If a standard loading dose of the medication for a patient weighting 70kg is 20mg, what will be the recommended dose of the same drug in the overweight 105kg patient?

A. 20

B. 50

C. 30

D. 10

2- A patient is being treated with a medication that is metabolized by cytochrome P450 enzyme group. He decides to start drinking grapefruit juice, which of the following effects can be caused by this dietary modification?

a. The first-pass loss of the drug increases

b. The volume of distribution of the drug increases.

c. The hepatic ciearance of the drugs increases.

d. The half-life of the drug increases.

e. The renal clearance of the drug decreases.

Question

31-05-2024
Medicine

College

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1- If a standard loading dose of the medication for a patient weighting 70kg is 20mg, what will be the recommended dose of the same drug in the overweight 105kg patient?

A. 20

B. 50

C. 30

D. 10

2- A patient is being treated with a medication that is metabolized by cytochrome P450 enzyme group. He decides to start drinking grapefruit juice, which of the following effects can be caused by this dietary modification?

a. The first-pass loss of the drug increases

b. The volume of distribution of the drug increases.

c. The hepatic ciearance of the drugs increases.

d. The half-life of the drug increases.

e. The renal clearance of the drug decreases.

Answer :

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sachdevariya005 sachdevariya005 · Answer 1 · 2024-07-17T22:17:13-04:00

1. The recommended dose of the same drug for an overweight patient weighing 105kg would be higher than the standard dose.

Dosage calculations often take into account the patient's weight, among other factors, to ensure appropriate dosing. In this case, the overweight patient's dose would likely be higher than that of the 70kg patient. However, the specific recommended dose cannot be determined without additional information.

2. Drinking grapefruit juice can affect the metabolism of drugs metabolized by the cytochrome P450 enzyme group. The potential effect is an increase in the drug's concentration and prolongation of its effects, resulting in a longer half-life of the drug.

Grapefruit juice contains compounds that inhibit the activity of certain cytochrome P450 enzymes, leading to decreased drug metabolism. This can result in higher drug concentrations in the body, increased duration of drug effects, and a longer half-life. It's important for patients to be aware of potential interactions between grapefruit juice and medications and to consult their healthcare provider for personalized advice. The effects mentioned in s a, b, c, and e are not typically associated with grapefruit juice consumption.

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