A patient has been ordered azithromycin [Zithromax] and asks the nurse why the medication does not have to be taken as often as other antibiotics that have previously been ordered. What is the nurse's best response?
"This drug has a longer duration of action than some of the other antibiotics."
"This is a much more effective drug than what you received previously."
"I'll call the pharmacy and ask about the chemical makeup of the drug."
"You'll need to ask your healthcare provider questions like that."
The Correct Answer is A
A. "This drug has a longer duration of action than some of the other antibiotics."
Explanation: Azithromycin, a macrolide antibiotic, has a longer half-life in the body compared to some other antibiotics. Half-life refers to the time it takes for half of the drug to be eliminated from the body. A longer half-life means the drug remains effective for a longer duration, allowing for less frequent dosing.
B. "This is a much more effective drug than what you received previously."
Explanation: While azithromycin is effective against a wide range of bacterial infections, it's not accurate to say it's universally more effective than other antibiotics. The choice of antibiotic depends on the specific type of infection and the susceptibility of the bacteria causing it. Effectiveness varies based on the context of use.
C. "I'll call the pharmacy and ask about the chemical makeup of the drug."
Explanation: While understanding the chemical makeup of drugs is important for healthcare professionals, it might not directly answer the patient's question about the dosing frequency. Explaining the drug's pharmacological properties, such as its duration of action, would provide a more relevant and understandable response to the patient's query.
D. "You'll need to ask your healthcare provider questions like that."
Explanation: This response does not provide the patient with the information they seek. Nurses are valuable resources for medication-related questions and should strive to provide accurate and understandable explanations to patients.
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Related Questions
Correct Answer is C
Explanation
A. "Cephalosporins are assigned to generations based on their relative costs to administer."
This statement is incorrect. The classification of cephalosporins into generations is based on their antimicrobial spectrum and activity against specific bacteria, not their cost.
B. "Later generations of cephalosporins have lower resistance to destruction by beta-lactamases."
This statement is not accurate. In fact, later generations of cephalosporins have increased resistance to destruction by beta-lactamases, which are enzymes produced by bacteria that can break down certain antibiotics.
C. "Cephalosporins have increased activity against gram-negative bacteria with each new generation."
This statement is correct. Cephalosporins are grouped into generations (first to fifth) based on their antibacterial spectrum. As the generations progress, there is an increase in activity against gram-negative bacteria, among other improvements in their spectrum.
D. "First-generation cephalosporins have better penetration of the cerebrospinal fluid."
This statement is generally true. First-generation cephalosporins have better penetration into the cerebrospinal fluid, making them useful for treating certain central nervous system infections.
Correct Answer is B
Explanation
A. Bactericidal and bacteriostatic are used interchangeably.
This statement is incorrect. Bactericidal and bacteriostatic have distinct meanings in pharmacology and microbiology. Bactericidal means the drug kills bacteria, whereas bacteriostatic means the drug inhibits the growth of bacteria without killing them.
B. Bactericidal drugs are directly lethal to bacteria, and bacteriostatic drugs work to slow bacterial growth but do not cause cell death.
This statement is correct. Bactericidal drugs directly kill bacteria, leading to their death. Bacteriostatic drugs inhibit the growth of bacteria without causing their immediate death. Both types of drugs play different roles in the treatment of bacterial infections.
C. Bacteriostatic drugs are directly lethal to bacteria, and bactericidal drugs work to slow bacterial growth but do not cause cell death.
This statement is incorrect. It confuses the roles of bactericidal and bacteriostatic drugs. Bactericidal drugs directly kill bacteria, while bacteriostatic drugs inhibit bacterial growth without immediate cell death.
D. A bactericidal drug can cause death to the host, whereas a bacteriostatic drug only affects bacteria.
This statement is incorrect. Both bactericidal and bacteriostatic drugs primarily affect bacteria, not the host. The difference lies in how they affect bacteria: bactericidal drugs kill bacteria directly, and bacteriostatic drugs inhibit their growth.
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