Which antitumor drug has a dual role of being an antibiotic?
Methotrexate
Antiestrogens
Corticosteroid
Doxorubicin (Doxil)
The Correct Answer is D
Choice A rationale: Incorrect. Methotrexate is a chemotherapy drug and an immunosuppressant but not an antibiotic. It inhibits the metabolism of folic acid, which is necessary for cell replication, but it does not have antibiotic properties.
Choice B rationale: Incorrect. Antiestrogens are a class of drugs used to treat hormone-sensitive cancers like breast cancer by blocking the effects of estrogen. They are not antibiotics and do not have antimicrobial properties.
Choice C rationale: Incorrect. Corticosteroids are used in cancer treatment primarily to reduce inflammation and manage side effects of chemotherapy, such as nausea and allergic reactions. They have immunosuppressive properties but are not antibiotics.
Choice D rationale: Correct. Doxorubicin (Doxil) is an antitumor drug that also has antibiotic properties. It belongs to the anthracycline class of chemotherapy drugs and works by intercalating DNA, disrupting the replication and transcription processes, leading to cell death. Doxorubicin was originally derived from the bacterium Streptomyces peucetius, which imparts its antibiotic properties.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C"]
Explanation
A. Chest X-rays
Chest X-rays are imaging tests that provide detailed pictures of the inside of the chest, including the heart, lungs, and other structures. They are noninvasive as they do not involve any penetration or insertion into the body.
B. Echocardiogram
An echocardiogram is a noninvasive test that uses sound waves to create images of the heart. It provides information about the structure and function of the heart without the need for invasive procedures.
C. Pulmonary function tests
Pulmonary function tests (PFTs) are noninvasive tests that assess the function of the lungs. They include various breathing exercises and measurements to evaluate lung capacity and respiratory function.
D. Cardiac catheterization
Cardiac catheterization is an invasive procedure that involves the insertion of a catheter into the heart. It is not considered noninvasive.
Correct Answer is B
Explanation
A. Relieves nasal congestion
Dornase alfa is not used to relieve nasal congestion. It is specifically designed to address the thick, sticky mucus that can accumulate in the airways of individuals with cystic fibrosis (CF).
B. Decreases thick secretions
This is the correct answer. Dornase alfa is known for its ability to decrease the viscosity of thick secretions in the airways of individuals with CF. By breaking down the DNA within the mucus, it helps to thin and improve the clearance of the mucus.
C. Decreases pain
Dornase alfa is not primarily used to decrease pain. Its main action is related to improving respiratory function by reducing the thickness of mucus, which can help ease breathing difficulties associated with CF.
D. Suppresses cough
Dornase alfa is not used to suppress cough. In fact, it may increase coughing initially as it facilitates the loosening and clearance of mucus from the airways.
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