Correct Answer: A

Rationale: The correct answer is A: Levodopa. Levodopa is the most effective pharmacologic agent for treating Parkinson's disease because it is converted to dopamine in the brain, replenishing the deficient dopamine levels in Parkinson's patients. Selegiline and Symmetrel are also used in treating Parkinson's, but they are typically used as adjunctive therapy rather than the primary treatment. Permax has been withdrawn from the market due to safety concerns, making it an incorrect choice.

Correct Answer: C

Rationale: The correct answer is C, bilateral crackles. Fluid in both lung bases on x-ray indicates pulmonary edema, causing crackles on auscultation. Fatigue (A) is a nonspecific symptom. Peripheral edema (B) is a sign of fluid retention in the extremities, not lungs. Jugular vein distention (D) indicates increased central venous pressure, which is not specific to lung fluid.

Correct Answer: B

Rationale: The correct answer is B, weight gain, as it is not typically considered a warning sign of cancer. Changes in bladder and bowel habits (A), indigestion or difficulty in swallowing (C), and a nagging cough or hoarseness (D) are commonly associated with various types of cancer. Weight gain is more commonly linked to factors such as diet, exercise, and hormonal imbalances rather than cancer. It is important to be vigilant about the other warning signs and seek medical attention if any of those symptoms persist.

Correct Answer: A

Rationale: The correct answer is A: Avoiding using soap on the irradiated areas. This is because soap can irritate the skin, leading to skin breakdown in a client at risk for impaired skin integrity due to radiation therapy. Avoiding soap helps to prevent further damage to the skin. Choice B is incorrect as talcum powder can further irritate the skin and should be avoided. Choice C is not relevant to preventing skin integrity issues. Choice D is incorrect because thoracic skin markings should not be removed as they are essential for accurate radiation delivery.

Correct Answer: C

Rationale: The normal range for intraocular pressure (IOP) is approximately 10-21 mm Hg. Choice C has an IOP of 11 mm Hg, falling within this normal range, making it the correct answer. Choices A, B, and D are outside the normal range, with A being too low and B and D being too high, indicating abnormal IOP levels. Choice A (8 mm Hg) is below the normal range, while choices B (25 mm Hg) and D (28 mm Hg) are above the normal range, therefore, they are incorrect answers.