Correct Answer: C

Rationale: The correct answer is C because Neomycin is given preoperatively to decrease and retard the growth of normal bacteria in the intestines. This helps reduce the risk of infection during surgery by minimizing the number of bacteria present in the colon. Options A, B, and D are incorrect because Neomycin is not given to prevent infection postoperatively, eliminate the need for preoperative enemas, or treat cancer of the colon. The main purpose of administering Neomycin in this scenario is to create a sterile surgical field by reducing the normal flora in the intestines.

Correct Answer: D

Rationale: The correct answer is D: Peritonitis. Peritonitis is a major complication of peritoneal dialysis due to infection of the peritoneum. It can lead to serious consequences if not treated promptly. The nurse should monitor for signs of peritonitis such as abdominal pain, cloudy dialysate, fever, and increased white blood cell count.

Internal hemorrhage (
A), hydronephrosis (
B), and ecchymosis (
C) are not major complications specific to peritoneal dialysis. Internal hemorrhage can occur but is less common. Hydronephrosis is more related to obstruction of the ureters. Ecchymosis refers to bruising and is not directly associated with peritoneal dialysis.

Correct Answer: A

Rationale: The correct answer is A: Potential for infection. The decreased WBC count indicates reduced ability to fight off infections, making this the priority nursing diagnosis. Normal RBC count rules out anemia-related complications. Decreased HCT and Hgb indicate possible anemia but do not directly relate to infection risk.

Choices B and C are not as critical as the potential for infection due to the significant impact on the individual's health and well-being.
Choice D, fluid volume excess, is not directly related to the blood test results provided.

Correct Answer: D

Rationale: The correct answer is D: Dysphagia or hoarseness. In laryngeal cancer, dysphagia and hoarseness are early symptoms due to vocal cord involvement. Hoarseness results from vocal cord paralysis, while dysphagia occurs when the tumor obstructs the esophagus. Anemia and fatigue (choice
A) are nonspecific symptoms seen in various conditions. A noticeable lump in the neck (choice
B) typically indicates metastasis to the lymph nodes, which occurs later in laryngeal cancer. Crackles and stridor (choice
C) are more associated with respiratory conditions rather than laryngeal cancer.

Correct Answer: A

Rationale:
Rationale: Intrinsic factor is a glycoprotein produced by the stomach that is essential for the absorption of vitamin B12 in the ileum. Without intrinsic factor, vitamin B12 absorption is impaired, leading to megaloblastic anemia. Histamine and hydrochloric acid are not directly involved in vitamin B12 absorption. Liver enzymes are not implicated in the absorption process.
Therefore, the correct answer is A.