Which of the following types of patients are more vulnerable to drug toxicity?
Immunocompromised patients
Immunocompetent patients
Infants and elderly patients
Patients who have allergic reactions
The Correct Answer is A
A. Immunocompromised patients:
Immunocompromised patients, whose immune systems are weakened or impaired, are indeed more vulnerable to drug toxicity. This vulnerability can be due to factors such as decreased ability to metabolize and eliminate drugs, increased susceptibility to infections and opportunistic pathogens, and impaired organ function, particularly in the liver and kidneys, which are involved in drug metabolism and excretion.
B. Immunocompetent patients:
Immunocompetent patients have normal immune function and are generally less vulnerable to drug toxicity compared to immunocompromised individuals. However, susceptibility to drug toxicity can still vary depending on factors such as age, underlying health conditions, renal and hepatic function, and concurrent use of other medications.
C. Infants and elderly patients:
Infants and elderly patients are more vulnerable to drug toxicity due to factors such as immature or declining organ function, altered drug metabolism and elimination, and differences in body composition. In infants, organ systems are still developing, while in elderly patients, age-related changes can affect drug pharmacokinetics and increase the risk of adverse reactions.
D. Patients who have allergic reactions:
Patients who have allergic reactions may experience adverse drug reactions if they are exposed to the offending medication again. However, this does not necessarily make them more vulnerable to drug toxicity in general. Allergic reactions are specific immune responses and differ from drug toxicity, which can occur due to various mechanisms unrelated to allergies.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. “It’s fine for me to become pregnant while taking this medication.”
This statement is incorrect. Tetracycline is known to have teratogenic effects, meaning it can harm the developing fetus if taken during pregnancy. Women of childbearing age should use effective contraception while taking tetracycline and avoid becoming pregnant during treatment.
B. “I will need to postpone my vacation at the beach until I finish this medication."
This statement demonstrates an understanding of the discharge instructions. Tetracycline can increase the risk of sunburn and photosensitivity reactions. Therefore, it's advisable for the client to avoid prolonged sun exposure, particularly during peak sunlight hours, and to use sun protection measures such as wearing protective clothing, using sunscreen, and avoiding tanning beds or sunlamps. Postponing a vacation at the beach until after finishing the medication is a prudent precaution to minimize the risk of sun-related side effects.
C. “I am so glad to be leaving today because I have an appointment at the tanning salon."
This statement is incorrect. Tetracycline can increase the risk of sunburn and photosensitivity reactions. Visiting a tanning salon while taking tetracycline can further increase the risk of skin damage and should be avoided.
D. "I will stop taking this medication as soon as I feel better.”
This statement is incorrect. It's important for the client to complete the full course of tetracycline as prescribed by their healthcare provider, even if they start to feel better before finishing the medication. Stopping the medication prematurely can lead to incomplete treatment and potential recurrence of the infection.
Correct Answer is B
Explanation
A. Decision to administer either a bactericidal or bacteriostatic drug:
Culture and sensitivity tests provide information about the susceptibility of the microorganism to specific antimicrobial agents. Based on this information, healthcare providers can choose between bactericidal (agents that kill bacteria) or bacteriostatic (agents that inhibit bacterial growth) drugs. For example, if the culture indicates that the microorganism is susceptible to a bactericidal drug, such as penicillin, the healthcare provider may choose to administer that type of drug.
B. Microbial susceptibility to an anti-infective:
This option accurately describes one of the primary purposes of culture and sensitivity tests. These tests determine whether the microorganism causing the infection is susceptible or resistant to specific antimicrobial agents. This information guides the selection of the most appropriate anti-infective therapy to effectively treat the infection.
C. Duration of the antibacterial drug therapy:
While culture and sensitivity tests provide valuable information about microbial susceptibility to antimicrobial agents, they do not specifically determine the duration of antibacterial drug therapy. The duration of therapy is often determined based on factors such as the type and severity of the infection, the patient's response to treatment, and clinical guidelines, rather than solely on the results of culture and sensitivity tests.
D. Decision to administer empiric therapy:
Empiric therapy involves the initiation of antimicrobial treatment based on clinical judgment and knowledge of likely pathogens before culture and sensitivity results are available. Culture and sensitivity tests help confirm the causative microorganism and guide subsequent treatment decisions, including adjustments to therapy based on the results. Therefore, while culture and sensitivity tests inform decisions regarding antimicrobial therapy, they do not directly determine whether empiric therapy should be initiated.
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