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A nursing instructor is preparing a teaching plan for a group of nursing students about pharmacology. When describing this topic, the instructor would focus the discussion on which of the following as an essential aspect?
- A. Drug name
- B. Drug class
- C. Drug action
- D. Drug source
Correct Answer: C
Rationale: Pharmacology is the study of drugs and their action on living organisms. Thus, an essential aspect of pharmacology is drug action. An understanding of the drug name, drug class, and drug source is important, but the most critical aspect related to pharmacology is how the drug acts in the body.
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The nurse observes that after administration of a drug the patient has developed itching and a skin rash. The nurse interprets these findings as which of the following?
- A. Toxicity
- B. Allergic reaction
- C. Angioedema
- D. Crystalluria
Correct Answer: B
Rationale: Allergic reactions are manifested by a variety of signs and symptoms including itching, skin rashes, and hives. Swollen eyelids, lips, and mouth are some of the symptoms of angioedema, an allergic drug reaction that may block the airway, causing asphyxia. Toxicity or toxic reactions are caused when blood concentration levels exceed the therapeutic level of drugs. Reduced blood pressure is called hypotension. Crystals in the urine are symptoms of crystalluria.
The nurse administers a prescribed medication that is supplied as an enteric-coated tablet. The patient asks the nurse about this form of tablet. When describing how this tablet is absorbed, which response by the nurse would be most accurate?
- A. The medication dissolves directly from the stomach into the body.
- B. The drug breaks up into pieces as it moves through the stomach.
- C. The medication bypasses the GI tract and goes quickly into the bloodstream.
- D. The drug dissolves into fragments after it reaches your small intestine.
Correct Answer: D
Rationale: Enteric-coated tablets disintegrate or fragment after reaching the alkaline medium of the small intestine. Tablets and capsules break up into small particles and dissolve into body fluids in the gastrointestinal tract. Liquids and parenteral drugs are quickly absorbed into the body system.
After teaching a group of nursing students about pharmacokinetics, the instructor determines that the teaching was successful when the students identify which of the following as the first phase?
- A. Metabolism
- B. Absorption
- C. Distribution
- D. Excretion
Correct Answer: B
Rationale: Pharmacokinetics refers to the transportation activity of drugs in the body after administration. The first component is absorption. This is followed by distribution, metabolism, and finally excretion.
A patient arrives at the health care clinic and informs the nurse that he has consumed several aspirin tablets for a severe headache over the past 24 hours. The nurse would be alert for which of the following as a harmful effect?
- A. Gastrointestinal bleeding
- B. Breathing difficulties
- C. Visual disturbances
- D. Loss of balance
Correct Answer: A
Rationale: Aspirin is potentially harmful and can cause gastrointestinal bleeding and salicylism. Breathing difficulties, visual disturbances, and loss of balance could be due to an illness or the effects of some other drug.
When describing the various types of medications to a group of nursing students, a nursing instructor would identify which of the following as a source for deriving medications? Select all that apply.
- A. Plants
- B. Synthetic sources
- C. Mold
- D. Minerals
- E. Animals
Correct Answer: A,B,C,D,E
Rationale: Medications are derived from natural sources, for example, plants, molds, minerals, and animals, as well as created synthetically in a laboratory.