As part of primary cancer prevention program, an oncology nurse answers questions from the public at health fair. When someone asks about the laryngeal cancer, the nurse should explain that:

Correct Answer: A

Rationale: Step-by-step rationale for why choice A is correct: 1. Laryngeal cancer is strongly linked to smoking and alcohol consumption. 2. Both smoking and alcohol use are modifiable risk factors, meaning they can be prevented. 3. By avoiding smoking and excessive alcohol intake, individuals can significantly reduce their risk of developing laryngeal cancer. 4. Therefore, laryngeal cancer is considered one of the most preventable types of cancer. Summary of why the other choices are incorrect: B. Inhaling polluted air can be a risk factor for laryngeal cancer, so this statement is inaccurate. C. Laryngeal cancer occurs more frequently in men than women, so this statement is incorrect. D. Squamous cell carcinoma, not adenocarcinoma, is the most common type of laryngeal cancer, making this statement incorrect.

Correct Answer: C

Rationale: The correct answer is C: "Divided doses produce greater cytotoxic effects on the diseased cells." Dividing the doses of the antimetabolite allows for more consistent levels of the drug in the bloodstream, ensuring sustained exposure to the cancer cells. This continuous exposure enhances the drug's cytotoxic effects, increasing its efficacy in targeting and destroying the diseased cells. Options A and B provide vague or incorrect information, while option D is misleading as antimetabolites do not prevent cell division, but rather disrupt DNA synthesis.

Correct Answer: C

Rationale: Step 1: Most clients are not hospitalized long after a mastectomy - Correct. This is because mastectomy is often performed as an outpatient procedure, and clients are discharged home shortly after surgery. Step 2: The adverse effects of mastectomy are not immediate - Incorrect. Adverse effects may occur post-surgery, but early discharge is not solely due to immediate adverse effects. Step 3: The wound of the surgery is not highly contagious - Incorrect. Mastectomy wounds are not contagious, and isolation precautions are not necessary. Step 4: Suicidal tendencies in women undergoing mastectomy are not high - Incorrect. While emotional support is crucial, early discharge is not primarily due to suicidal tendencies. Summary: Choice C is correct because mastectomy clients are typically not hospitalized long, making early discharge instructions and home care arrangements necessary. Choices A, B, and D are incorrect as they do not directly relate to the primary reason for early discharge and home care planning.

Correct Answer: C

Rationale: The correct answer is C because morphine sulfate is given to a patient with pulmonary edema to reduce anxiety (i) and to reduce preload and afterload (v). Morphine sulfate does not increase blood pressure (ii), relieve chest pain (iii), or strengthen heart contractions (iv) in the context of pulmonary edema. Choice A is incorrect because it includes increasing BP, which is not a reason for giving morphine sulfate in this case. Choice B is incorrect because it includes strengthening heart contractions, which is not a reason for administering morphine sulfate. Choice D is incorrect because it includes relieving chest pain, which is not a primary purpose of giving morphine sulfate to a patient with pulmonary edema.

Correct Answer: B

Rationale: The correct answer is B: Clonidine (Catapres). Clonidine is known to cause headache as a side effect due to its mechanism of action affecting blood pressure regulation in the brain. Furosemide (A) is a diuretic that typically causes electrolyte imbalances, not headaches. Atenolol (C) is a beta-blocker used for hypertension, which can cause fatigue but not typically headaches. Adalat (D) is a calcium channel blocker that usually causes peripheral edema, not headaches.