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Pharmacology Questions and Answers (Q&A)

When would a patient with an edema have an increased volume of distribution (Vd)?
Chris Kenway, Content Writer
Answered: Feb 01, 2019
There are some people who are not too familiar with hydrophilic drugs. This type of drugs usually stays in the blood until the extra fluid becomes eliminated. This is usually eliminated through...Read More

3 Answers

722 views
What is the least common drug-receptor bond?
John Smith
Answered: Jan 22, 2021
Covalent-5) learning objective: describe the different drug -receptor bonds.answer: ein general drugs binding to receptors in a reversible way and therefore the chemical bondbetween drug and...Read More

1 Answer

451 views
What was the content of a single tablet if the A1%,1cm was 490?
John Adney
Answered: Jul 12, 2017

C=0.588/490=0.0012g/100ml

0.0012/100=0.000012g in 1ml

0.000012df=0.0006g in the original

%=0.001/0.5100=20

2 Answers

393 views
How long will a dog take for the drug to reach 90 percent of its final steady state level?
John Smith
Answered: Jan 22, 2021
40 hours

3.3 x t1/2= 3.3x12= about 40 hours

1 Answer

384 views
What is phenytoin?
John Smith
Answered: Jan 22, 2021
Toxic effects may occur with only small increments in dose

Sulfonamides can displace phenytoin from its binding sites, increasing the plasma-free fraction of the drug. Induction of liver...Read More

2 Answers

372 views
What describes minimal effective concentration (MEC)?
M. Porter, Senior Executive
Answered: Dec 14, 2018
The minimal drug plasma concentration to produce effect describes minimal effective concentration (MEC). This question can often be tested in pharmacology or potentially in chemistry when not...Read More

2 Answers

349 views
What will the nurse instruct the patient?
John Smith
Answered: Jan 22, 2021
Remove the contact lenses before applying the drops

1 Answer

342 views
Which of the following is not a side effect of the cholinoreceptor blocker (Atropine)?
Bergeront Tiffney, Computer Engineer
Answered: May 01, 2019
Atropine is an antimuscarinic receptor blocker that is commonly used to treat bradycardia and ophthalmic conditions. It is also used as an antidote to treat the toxicity of Acetylcholine esterase...Read More

3 Answers

322 views
Which of the following statements correctly pair the antifungal drugs with their likely mechanism of action?
John Smith
Answered: Jan 22, 2021
Griseofulvin - interferes with microtubule function-2. terbinafine - inhibits squalene epoxidase-answer: bf griseofulvin is effective only against dermatophytes which take up the drug via an...Read More

2 Answers

317 views
Is it apparent that there are spare receptors comparing the two graphs?
Uncadf
Answered: Jan 22, 2021
No

Spare receptors occur when Emax occurs at less than 100% binding. In other words, when EC50 is less than Kd, spare receptors are present. The two are equal in this figure.

1 Answer

309 views
What are cardiac glycosides?
Malcolm Carneal, Digital Nomad
Answered: Aug 23, 2018
Cardiac glycosides are special glycosides that have a special effect on the heart. They often increase the contractile force of the heart but decrease the rate of contractions. Hence, the heart...Read More

1 Answer

293 views
How long would you expect the glucagon to take for 75% of the initial injection to be absorbed?
John Smith
Answered: Jan 22, 2021
24 minutes

1 Answer

264 views
What is the milligram equivalent dose in the following? The nurse is giving morning medications. The Medication Administration Record has an order for “levothyroxine, 75 mcg PO.” The...
John Smith
Answered: Jan 22, 2021
0.075 mg

There are 1000 mcg in 1 mg.

2 Answers

261 views
What does pKa mean?
M. Kennedy, Web Content Writer
Answered: Jun 28, 2018
PKa shows how strong the acid in a certain compound is. You will be able to tell if the acid is strong based on how high or how low the pKa is. More acidic compounds usually have a low pKa. Some...Read More

1 Answer

244 views
How would you explain the mechanism of tolerance in a 63-year-old patient?
R. Barnes, Analyst
Answered: Feb 26, 2019
When a patient becomes tolerant to a certain dose of morphine, this means that they will have a decreased morphine receptor density. The most common mechanism of pharmacodynamic tolerance is a...Read More

2 Answers

243 views

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