Author Question: After seven half-lives of a drug, which of the following percentages of the medication or drug ... (Read 90 times)

cookcarl

  • Hero Member
  • *****
  • Posts: 539
After seven half-lives of a drug, which of the following percentages of the medication or drug remains in the plasma of the person taking that drug?
 
  a. less than 1
  b. 1.5
  c. 5
  d. 50

Question 2

During the assessment of a healthy older adult, which normal age-related changes in memory functioning should a nurse anticipate?
 
  A) Mild deterioration in short-term memory; no change in long-term memory
  B) Mild deterioration in short-term memory; mild deterioration in long-term memory
  C) No change in short-term memory; mild deterioration in long-term memory
  D) No change in short-term memory; no change in long-term memory



shoemake

  • Sr. Member
  • ****
  • Posts: 343
Answer to Question 1

A
After seven half-lives, less than 1 of the medication remains in the plasma. A drug's half-life is the time required for plasma concentrations of a drug to decrease to half of an initial value. After each successive half-life, half of the medication remains in the plasma that was there before. For instance, after the eighth half-life, less than 0.5 of the medication remains in the plasma, which is half of the medication in the plasma that was present after the seventh half-life

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

For a complete list of videos, visit our video library