A client is diagnosed with metastatic adenocarcinoma of the stomach. The physician prescribes mitomycin (Mutamycin) with other chemotherapeutic agents for palliative treatment. How mitomycin does exert its cytotoxic effects?

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Test Bank Pharmacology and the Nursing Process Questions

Question 1 of 5

A client is diagnosed with metastatic adenocarcinoma of the stomach. The physician prescribes mitomycin (Mutamycin) with other chemotherapeutic agents for palliative treatment. How mitomycin does exert its cytotoxic effects?

Correct Answer: A

Rationale: The correct answer is A: It inhibits deoxyribonucleic acid (DNA) synthesis. Mitomycin is an alkylating agent that works by cross-linking DNA, preventing DNA synthesis and leading to cell death. This mechanism of action makes it effective against rapidly dividing cells like cancer cells. Choice B, inhibiting ribonucleic acid (RNA) synthesis, is incorrect as mitomycin primarily targets DNA synthesis. Choice C, being cell cycle-phase specific, is incorrect as mitomycin affects cells in all phases of the cell cycle. Choice D, inhibiting protein synthesis, is incorrect because mitomycin's primary mode of action is on DNA replication, not protein synthesis.

Question 2 of 5

A client with supraglottic cancer undergoes a partial laryngectomy. Postoperatively, a cuffed tracheostomy tube is in place. When removing secretions that pool above the cuff, the nurse should instruct the client to:

Correct Answer: D

Rationale: The correct answer is D: Exhale deeply as the nurse re-inflates the cuff. Rationale: 1. When the cuff of the tracheostomy tube is deflated, the client should be instructed to exhale deeply to prevent aspiration of secretions. 2. Exhaling helps to clear the airway by pushing secretions out of the trachea, reducing the risk of aspiration. 3. Inhaling or holding the breath while the cuff is being re-inflated can increase the risk of inhaling secretions. 4. Coughing as the cuff is being deflated (choice A) may not be as effective in clearing secretions as exhaling deeply. 5. Taking a deep breath as the nurse deflates the cuff (choice C) may not be as effective as exhaling deeply in preventing aspiration. In summary, choice D is the correct answer because exhaling deeply helps clear secretions and reduce the risk of aspiration, while the other choices may

Question 3 of 5

A client has a routine Papanicolaou (Pap) test during a yearly gynecologic examination. The result reveals a class V finding. What should the nurse tell the client about this finding?

Correct Answer: D

Rationale: The correct answer is D because a class V Pap test finding indicates severe abnormalities, such as high-grade dysplasia or carcinoma in situ. Therefore, the nurse should instruct the client to undergo a biopsy as soon as possible to confirm the diagnosis and initiate appropriate treatment promptly. Choices A, B, and C are incorrect because a class V result is not normal and requires immediate follow-up, rather than waiting or repeating the Pap test at a later time.

Question 4 of 5

A client receives a sealed radiation implant to treat cervical cancer. When caring for this client, the nurse should:

Correct Answer: A

Rationale: The correct answer is A because bodily fluids and excretions (urine, feces, vomitus) can become contaminated with radiation from the implant. Therefore, they should be considered highly radioactive and handled appropriately. Choice B is incorrect because the client may remain radioactive for a longer period than 10 days post-implant removal. Choice C is incorrect because soiled linens should be handled according to radiation safety protocols and removed promptly. Choice D is incorrect because bed rest is not necessary unless specifically indicated by the healthcare provider; the client should be encouraged to move around as tolerated to prevent complications.

Question 5 of 5

The nurse is reviewing the medication history of a new preoperative patient who is nil by mouth (NPO). The nurse notes that the patient has been on long-term oral steroid therapy. The nurse understands that which of the following is the reason that steroids cannot be abruptly stopped?

Correct Answer: A

Rationale: The correct answer is A because abruptly stopping steroids can lead to adrenal insufficiency due to suppression of the adrenal glands. This can result in a sudden drop in cortisol levels, which are essential for various physiological functions. Patients on long-term steroid therapy need a gradual taper to allow the adrenal glands to resume cortisol production. Choices B, C, and D are incorrect as they do not directly relate to the physiological effects of stopping steroids abruptly.

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