Pharmacology and the Nursing Process 10th Edition Test Bank

Correct Answer: C

Rationale: Step-by-step rationale: 1. Propranolol is a beta-blocker that acts on the heart. 2. It blocks beta-adrenergic receptors, leading to decreased heart rate and contractility. 3. Decreased heart rate and contractility result in reduced cardiac output. 4. Therefore, the correct answer is C - It decreases cardiac output. Summary: A, B, and D are incorrect because propranolol does not increase heart rate, fluid volume, or cardiac contractility.

Correct Answer: D

Rationale: The correct answer is D: Cryptorchidism. Cryptorchidism, or undescended testicle, is a known risk factor for testicular cancer as the undescended testicle is more prone to developing cancerous changes. This condition increases the risk of testicular cancer even if the testicle is surgically corrected later in life. Other choices like A (Testosterone therapy during childhood) and B (Sexually transmitted disease) are not linked to testicular cancer. Choice C (Early onset of puberty) is not a direct risk factor for testicular cancer.

Correct Answer: B

Rationale: The correct answer is B: inadequate supply of oxygen to the myocardium. Angina pectoris is chest pain or discomfort caused by reduced blood flow to the heart muscle. This lack of oxygenated blood supply to the myocardium leads to ischemia, resulting in the characteristic chest pain. Choice A is incorrect as it refers to a decrease in alveolar surface area for gas exchange, which is related to conditions like emphysema, not angina. Choice C is incorrect as it pertains to pulmonary circulation, not coronary circulation. Choice D is incorrect as an increase in alveolar surface area would not be a cause of angina pectoris.

Correct Answer: D

Rationale: Pulmonary edema causes an increase in pressure in the pulmonary circulation, leading to an alteration in afterload due to increased resistance. It also causes fluid accumulation in the pulmonary vessels, affecting preload. Additionally, the heart may compensate by increasing contractility. Therefore, all of the above choices are altered in pulmonary edema. The incorrect choices are A, B, and C individually as they only represent one aspect of the alterations seen in pulmonary edema, while the correct answer D encompasses all three factors affected in this condition.

Correct Answer: A

Rationale: The correct answer is A because it follows the correct format of a nursing diagnosis: "Problem related to Etiology." In this case, "Decreased cardiac output" is the problem, and "altered myocardial contractility" is the cause. This format helps identify the specific issue and its underlying cause, allowing for targeted interventions. Choice B is incorrect as it doesn't follow the problem-etiology format and lacks specificity. Choice C is also incorrect as it lacks a clear nursing diagnosis and specific etiology. Choice D is incorrect as it presents a symptom rather than a nursing diagnosis with an associated cause. Overall, choice A is the best option as it provides a clear, specific nursing diagnosis that guides appropriate nursing interventions.