The time required for the plasma concentration of a drug to decrease by one-half is referred to as
a. bioavailability.
b. biotransformation.
c. drug distribution.
d. plasma half-life.
ANS: D
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SCENARIOUse this scenario to answer the following question(s).You respond to a 67-year-old female who has fallen at home. On arrival the patient is conscious and alert, with no respiratory or cardiac compromise. She states she tripped and fell and now has pain in her left hip. She thinks she might have heard a "pop" as she hit the floor. She has her neighbor at her side and says it is all right if you leave-the neighbor can get her up and to her favorite chair. She's afraid she can't afford the ambulance and the hospital, and she is sure she is just feeling her age. You know that the ambulance is on its way and should arrive soon.The patient requests that you leave, and she tells you that she will get help from her neighbor. She refuses to sign anything either giving or refusing consent.
You know the ambulance will be there soon, and you consider leaving. What should you do? A. Tell her neighbor that the woman is irrational and not competent to consent. B. Insist that she must sign the refusal-of-care document. C. Leave or be charged with battery. D. Wait for the ambulance to arrive, while calmly explaining to the woman that it would be best to allow care.
Which statement about the ventilation/perfusion (V/Q) ratio in a healthy person is true?
A) Blood flow and amount of ventilation are equal throughout the lungs B) The upper portion of the lungs has wasted ventilation C) The amount of blood perfusion throughout the lungs is greater than the amount of oxygen in the lungs D) The lower portion of the lungs has more oxygen than perfusion
What are the two main functions of the nose?
Which of the following is the cost incurred by the practice for supplies, salaries, and rent?
A) overhead B) accounts receivable C) cash flow D)aging report