The nurse is reviewing the concept of a drug's half-life for a student nurse, explaining that it is the time it takes for what to happen?

1. One-half of the drug to be absorbed
2. One-half of the drug to be eliminated by the body
3. The drug to elicit a therapeutic response
4. The drug to reach the target tissue


Correct Answer: 2
Rationale 1: A drug's half-life is the time it takes for one-half of the original dose to be eliminated by the body.
Rationale 2: A drug's half-life is the time it takes for one-half of the original dose to be eliminated by the body.
Rationale 3: A therapeutic response can be reached before the half-life occurs.
Rationale 4: Target tissue is reached on the onset of action, not at half-life.
Global Rationale: A drug's half-life is the time it takes for one-half of the original dose to be eliminated by the body. A therapeutic response can be reached before the half-life occurs. Target tissue is reached on the onset of action, not at half-life.

Nursing

You might also like to view...

A woman 2 weeks past her expected delivery date is receiving an oxytocin infusion to induce labor and begins to have contractions every 90 seconds. What is the nurse's initial action?

a. Stop the oxytocin infusion. b. Continue the infusion and report the findings to the physician. c. Turn her on her left side and reassess the contractions. d. Administer oxygen by mask.

Nursing

Which of the following groups was primarily responsible for the establishment of the first school of public health?

a. The American Medical Association b. The Association of State Departments of Public Health c. The federal government d. The Rockefeller Foundation

Nursing

A patient in the neurologic intensive care unit is being treated for cerebral edema. Which class of diuretic is used to reduce intracranial pressure?

a. Loop diuretics b. Osmotic diuretics c. Thiazide diuretics d. Vasodilators

Nursing

The nurse is teaching a group of menopausal women about the signs and symptoms of menopause and how they can get relief. One of the main concerns of the group is vaginal dryness and difficult intercourse

What is the reason the nurse will give for this? 1. The loss of cervical gland function leads to dryness of the mucous membranes of the vagina. 2. The vaginal pH increases, and the number of Doderlein's bacilli decreases. 3. The uterine lining thins and the muscle layer atrophies. 4. The labia shrink and lose their pigmentation.

Nursing