all of the following statements about helicobacter pylori h pylori are true except
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1. Which of the following statements about Helicobacter pylori (H. pylori) is false?

Correct answer: C

Rationale: H. pylori is known to reside in the mucus layer of the stomach and does not invade the epithelium. It produces urease that splits urea into ammonia and CO2. This action helps in neutralizing the acidic environment and allows H. pylori to survive. Additionally, urease activity can be detected in diagnostic tests for H. pylori. The stimulation of gastric acid secretion and disruption of the protective mucus layer are mechanisms by which H. pylori promotes injury. While eradicating H. pylori infection has been associated with a decreased risk of developing gastric cancer, it does not prevent adenocarcinoma of the stomach entirely.

2. The client has acute kidney injury (AKI). Which assessment finding requires immediate intervention?

Correct answer: B

Rationale: An elevated serum potassium level of 6.2 mEq/L in a client with AKI can lead to life-threatening cardiac arrhythmias, necessitating immediate intervention. Hyperkalemia is a serious complication in AKI as impaired kidney function can result in the accumulation of potassium in the blood, posing a risk of cardiac arrest. Prompt treatment to lower potassium levels is crucial to prevent cardiac complications in this situation.

3. When assessing a client reporting severe pain in the right lower quadrant of the abdomen, which sign would most likely indicate appendicitis?

Correct answer: A

Rationale: Rebound tenderness at McBurney's point is a classic sign of appendicitis. This sign indicates peritoneal irritation, a common feature of appendicitis. McBurney's point is located in the right lower quadrant of the abdomen and is a focal point for assessing tenderness. Positive Murphy's sign is associated with cholecystitis, not appendicitis. Rovsing's sign is elicited by palpation of the left lower quadrant resulting in pain in the right lower quadrant, also suggestive of appendicitis. Cullen's sign is associated with acute pancreatitis and manifests as periumbilical ecchymosis.

4. A 35-year-old man presents with difficulty swallowing, weight loss, and regurgitation of undigested food. A barium swallow shows a 'bird beak' appearance of the lower esophagus. What is the most likely diagnosis?

Correct answer: B

Rationale: The 'bird beak' appearance on a barium swallow is characteristic of achalasia, a condition where the lower esophageal sphincter fails to relax properly. This leads to difficulty swallowing, weight loss, and regurgitation of undigested food, which are hallmark symptoms of achalasia.

5. In planning the turning schedule for a bedfast client, it is most important for the nurse to consider what assessment finding?

Correct answer: B

Rationale: A low Braden score indicates a high risk for pressure ulcers, making regular turning crucial to prevent skin breakdown.

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