Pharmacology and the Nursing Process Test Bank

Correct Answer: C

Rationale: The correct answer is C: Check his airway. Ensuring a patent airway is the priority in trauma care to maintain oxygenation and ventilation. With the patient unconscious and bleeding profusely, airway obstruction or compromise is a critical concern. By checking the airway first, the nurse can quickly assess and address any immediate threats to the patient's breathing. Stopping the bleeding (choice A) can be addressed once the airway is secured. Taking vital signs (choice B) and finding out what happened from eyewitnesses (choice D) can be important but are secondary to ensuring the patient's airway is clear and unobstructed.

Correct Answer: C

Rationale: The correct answer is C because data validation involves verifying the accuracy and consistency of data by comparing it with other reliable sources. This ensures that the data is correct and reliable for analysis. Choice A is incorrect because data validation typically occurs after data collection, which is followed by data interpretation. Choice B is incorrect because validation is not about professional standards but about verifying data accuracy. Choice D is incorrect because data interpretation focuses on deriving meaning and insights from data, not on professional standards. In summary, understanding the differences between data validation and interpretation is crucial for ensuring data accuracy and reliability.

Correct Answer: B

Rationale: The correct answer is B: Pericardial friction rub. This is a key diagnostic sign of pericarditis due to the inflammation of the pericardial layers causing a rough, grating sound heard upon auscultation. Precordial pain (A) is a common symptom but not a specific diagnostic sign. Hypotension (C) and rapid/labored respirations (D) are not typically associated with pericarditis. Therefore, the presence of a pericardial friction rub is crucial in confirming the diagnosis of pericarditis.

Correct Answer: A

Rationale: The correct answer is A: Hyperkalemia. In acute Addisonian crisis, the adrenal glands do not produce enough cortisol and aldosterone, leading to electrolyte imbalances. This results in increased potassium levels (hyperkalemia) due to lack of aldosterone to promote potassium excretion. Hypernatremia (choice B) is less likely as aldosterone deficiency leads to sodium loss. Reduced BUN (choice C) is unlikely as Addison's crisis does not directly affect urea levels. Hyperglycemia (choice D) is not typically seen in Addisonian crisis as cortisol deficiency usually results in hypoglycemia.

Correct Answer: A

Rationale: Step-by-step rationale for why choice A is correct: 1. Enalapril maleate is an angiotensin-converting enzyme (ACE) inhibitor. 2. ACE inhibitors like enalapril maleate block the conversion of angiotensin I to angiotensin II. 3. By inhibiting the formation of angiotensin II, enalapril maleate decreases the levels of angiotensin II. 4. Angiotensin II is a potent vasoconstrictor, so decreasing its levels leads to vasodilation and decreased blood pressure. Summary of why other choices are incorrect: - Choice B: Enalapril maleate primarily dilates arterioles by decreasing angiotensin II levels, not veins. - Choice C: Enalapril maleate does not directly adjust extracellular volume; it primarily affects the renin-angiotensin-aldosterone system. - Choice D: Enalapril maleate