Nursing Elites

1. Which of the following techniques would the nurse use first to determine if a nasogastric tube is positioned in the stomach?

• A. Aspirating with a syringe and observing for the return of gastric contents.
• B. Irrigating with normal saline and observing for the return of solution.
• C. Placing the tube's free end in water and observing for air bubbles.
• D. Instilling air and auscultating over the epigastric area for the presence of the tube.

Correct answer: A

Rationale: The initial way to determine if a nasogastric tube is in the stomach is to apply suction to the tube with a syringe and observe for the return of stomach contents. Then the pH of the aspirate can be measured. This is the method of choice. One would not irrigate until tube placement is confirmed. Observing for air bubbles when the free end of the tube is placed under water is an unacceptable, unsafe method of determining tube placement. Another method is to instill air into the tube with a syringe while auscultating over the epigastric area. Hearing the air enter the stomach helps ensure proper placement, but the method is not foolproof and is no longer considered an effective or preferred way to determine placement.

2. Which of the following laboratory results would be expected in a client with peritonitis?

• A. Partial thromboplastin time above 100 seconds
• B. Hemoglobin level below 10 mg/dL
• C. Potassium level above 5.5 mEq/L
• D. White blood cell count above 15,000

Correct answer: D

Rationale: A white blood cell count above 15,000 is indicative of an infection, such as peritonitis.

3. The nurse is reviewing the record of a client with Crohn’s disease. Which of the following stool characteristics would the nurse expect to note documented in the client’s record?

• A. Chronic constipation
• B. Diarrhea
• C. Constipation alternating with diarrhea
• D. Stool constantly oozing from the rectum

Correct answer: B

Rationale: Crohn’s disease is characterized by nonbloody diarrhea of usually not more than four to five stools daily. Over time, the diarrhea episodes increase in frequency, duration, and severity. Chronic constipation (Choice A), constipation alternating with diarrhea (Choice C), and stool constantly oozing from the rectum (Choice D) are not characteristics typically associated with Crohn’s disease.

4. If a client had irritable bowel syndrome, which of the following diagnostic tests would determine if the diagnosis is Crohn’s disease or ulcerative colitis?

• A. Abdominal computed tomography (CT) scan
• B. Abdominal x-ray
• C. Barium swallow
• D. Colonoscopy with biopsy

Correct answer: D

Rationale: A colonoscopy with biopsy is the most definitive diagnostic test to differentiate between Crohn's disease and ulcerative colitis.

5. Before administering an intermittent tube feeding through a nasogastric tube, the nurse assesses for gastric residual. The nurse understands that this procedure is important to

• A. Confirm proper nasogastric tube placement.
• B. Observe gastric contents.
• C. Assess fluid and electrolyte status.
• D. Evaluate absorption of the last feeding.

Correct answer: D

Rationale: Evaluating the absorption of the last feeding is important because administration of a tube feeding to a full stomach could result in overdistention, thus predisposing the client to regurgitation and possible aspiration.

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