Chapter 04: Drug Interactions and Over-the-Counter Drugs

Chapter 04: Drug Interactions and Over-the-Counter Drugs

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

MULTIPLE CHOICE

 

1. A patient has been taking a drug for several years and tells the nurse it is no longer working. The nurse learns that the patient has recently begun taking an over-the-counter antacid medication. What does the nurse suspect is occurring?

a.	An adverse drug reaction
b.	A drug interaction
c.	Drug incompatibility
d.	Drug tolerance

 

 

ANS:  B

Drug interactions are an altered or modified action or effect of a drug as a result of interaction with one or more other drugs. An adverse drug reaction can occur with one or more drugs and has effects ranging from mild to severe toxicity. Drug incompatibility is a chemical reaction of two or more drugs that occurs in vitro. Drug tolerance is the development of reduced response to a medication over time.

 

DIF:    COGNITIVE LEVEL: Applying (Application)                  REF:   Page 30

TOP:   NURSING PROCESS: Evaluation

MSC:  NCLEX: Physiological Integrity: Pharmacological and Parenteral Therapies

 

2. The nurse is preparing to administer two intravenous medications that should not be given using the same IV tubing. The nurse understands that this is because of drug

a.	adverse reactions.
b.	incompatibility.
c.	interactions.
d.	potentiation.

 

 

ANS:  B

Drugs that are incompatible cannot be mixed together in solution and cannot be mixed in a syringe, IV bag, or other artificial environment. Adverse reactions are symptoms occurring from drug effects. Drug interactions occur in vivo. Potentiation is when one drug causes an enhanced response in another drug.

 

DIF:    COGNITIVE LEVEL: Applying (Application)                  REF:   Page 30

TOP:   NURSING PROCESS: Nursing Intervention

MSC:  NCLEX: Physiological Integrity: Pharmacological and Parenteral Therapies

 

3. The nurse is teaching a patient who will begin taking ciprofloxacin. What instruction will the nurse include when teaching this patient about this drug?

a.	“Do not take this medication with oral contraceptive pills.”
b.	“Take at least 1 hour after or 2 hours before taking antacids.”
c.	“Take in the morning with your multivitamin tablet.”
d.	“Take with milk to reduce gastric upset.”

 

 

ANS:  B

Dairy products, multivitamins, and antacids should be avoided 1 hour before and 2 hours after taking ciprofloxacin because these products contain divalent cations that form a drug complex that prevents absorption of the ciprofloxacin.

 

DIF:    COGNITIVE LEVEL: Applying (Application)                  REF:   Page 30

TOP:   NURSING PROCESS: Nursing Intervention: Patient Teaching

MSC:  NCLEX: Physiological Integrity: Pharmacological and Parenteral Therapies

 

4. A patient who takes a drug that undergoes gastric absorption will begin taking an opioid analgesic after sustaining an injury in a motor vehicle accident. The nurse will observe the patient closely for which effects?

a.	Decreased effects of the first drug
b.	Increased effects of the first drug
c.	Decreased effects of the narcotic
d.	Increased effects of the narcotic

 

 

ANS:  B

Opioids slow gastric emptying, allowing more time for drugs absorbed in the stomach to be absorbed. The nurse should expect increased effects of the first drug.

 

DIF:    COGNITIVE LEVEL: Applying (Application)                  REF:   Page 30

TOP:   NURSING PROCESS: Evaluation

MSC:  NCLEX: Physiological Integrity: Pharmacological and Parenteral Therapies