Correct Answer: C

Rationale: The correct answer is C because primary brain tumors originate from cells within the brain itself. These tumors develop from abnormal growth of brain cells. Choice A is incorrect as primary brain tumors do not come from outside the central nervous system (CNS). Choice B is incorrect as primary brain tumors do not typically start in glands. Choice D is incorrect as primary brain tumors do not arise from nerve tissue elsewhere in the body. In summary, the nurse should explain to the patient that the tumor originated from cells within his brain to provide accurate information about the nature of primary brain tumors.

Correct Answer: B

Rationale: The correct answer is B because verifying tube placement before feeding is essential to prevent pulmonary aspiration. If the tube is not correctly positioned in the stomach, there is a risk of feeding going into the lungs. Observing the color of gastric contents (A) may not always indicate correct placement. Adding blue food coloring (C) is unnecessary and could cause confusion. Running the formula over 12 hours (D) does not address the risk of pulmonary aspiration and does not ensure proper tube placement.

Correct Answer: C

Rationale: Correct Answer: C - Administering an enema Rationale: Administering an enema is a task that can be safely delegated to nursing assistive personnel (NAP) as it is within their scope of practice and does not require the specialized knowledge and skills of a registered nurse. NAP can be trained to perform enema administration safely and effectively, under the supervision of a nurse. This task involves following a specific procedure and does not require clinical judgment or decision-making. Summary of other choices: A: Performing the first postoperative pouch change - This task involves wound care and assessment, which require the expertise of a registered nurse. B: Maintaining a nasogastric tube - This task involves ongoing assessment, monitoring for complications, and adjustments, which are responsibilities of a registered nurse. D: Digitally removing stool - This task involves invasive procedures and assessment, which are beyond the scope of practice for nursing assistive personnel.

Correct Answer: C

Rationale: The correct answer is C. Cholesteatomas are often the result of chronic otitis media. Chronic otitis media can lead to the formation of cholesteatomas, which are noncancerous but can cause complications if left untreated. Cholesteatomas do not resolve spontaneously (A), are not the result of metastasis (B), do not typically cause intractable neuropathic pain (D), and usually require surgical removal to prevent complications (E). Therefore, educating the patient about the association between chronic otitis media and cholesteatoma is essential for understanding the diagnosis and potential treatment options.

Correct Answer: A

Rationale: The correct answer is A: decreased fibrinogen. In disseminated intravascular coagulation (DIC), there is widespread activation of coagulation leading to consumption of clotting factors like fibrinogen, resulting in decreased levels. Platelets are usually decreased, not increased, in DIC. Hematocrit may be elevated due to hemoconcentration but not directly related to DIC. Thromboplastin time would be prolonged, not decreased, in DIC due to consumption of clotting factors.