Correct Answer: A

Rationale: When caring for an AV fistula used for hemodialysis, it is important to assess for a bruit (a humming sound) or thrill (a vibrating sensation) at the site of the fistula. These indicate proper blood flow through the fistula, ensuring it is patent and suitable for hemodialysis. Assessing for clotting in fistula tubing (Choice A) is not a routine nursing intervention for AV fistulas. Applying a dressing over the fistula site (Choice B) is not necessary as the site needs to be accessible for hemodialysis. Assessing circulation proximal to the fistula site (Choice D) is important but not specific to caring for the access site of an AV fistula.

Correct Answer: A

Rationale: The correct answer is 'Increased appetite.' In cases of acute meningitis, loss of appetite would be expected rather than an increase. Meningitis is often caused by an infectious agent that colonizes or infects various sites in the body, leading to systemic symptoms. Common symptoms of acute meningitis include fever, vomiting, and poor tolerance of light due to meningeal irritation. The inflammatory response in the meninges can result in symptoms like photophobia. Increased appetite is not typically associated with acute meningitis. Therefore, choice A is the least likely symptom to be observed in a patient with acute meningitis. Choices B, C, and D are symptoms commonly seen in acute meningitis due to the inflammatory process affecting the central nervous system and meninges.

Correct Answer: D

Rationale: A wound evisceration occurs when the edges of an abdominal wound separate, allowing the coils of the intestine to protrude outside of the body. The nurse should notify the physician at once if this occurs. While waiting for treatment, the nurse should cover the intestines with sterile gauze soaked in saline. Turning the client on his side or asking the client to take a breath and hold it are not appropriate actions in this situation. Pushing the abdominal contents back inside the wound using sterile gloves can lead to infection and is not within the nurse's scope of practice.

Correct Answer: D

Rationale: A platelet count of 25,000/microliter indicates severe thrombocytopenia, which increases the risk of bleeding. It is crucial to initiate bleeding precautions, including regularly checking for signs of bleeding such as examining urine and stool for blood. Monitoring for fever every 4 hours (Choice A) should be included for neutropenic precautions, not specifically related to platelet count. Requiring visitors to wear respiratory masks and protective clothing (Choice B) is more relevant for patients with airborne precautions. Considering transfusion of packed red blood cells (Choice C) is not indicated for low platelet count but is more appropriate for managing anemia or low hemoglobin levels.

Correct Answer: B

Rationale: Increased intracranial pressure after head trauma can lead to serious complications. Repeated vomiting is a concerning sign as it can indicate stimulation of the vomiting center within the brainstem due to increased pressure. This can be an early indicator of raised intracranial pressure and the need for urgent medical intervention. Bulging anterior fontanel may not be immediately apparent in a 4-year-old child and is more common in infants. Signs of sleepiness at a particular time of day are not specific to increased intracranial pressure. Inability to read short words from a distance of 18 inches may indicate vision problems but is not directly related to intracranial pressure.