In preparation for a patient having a Schilling test, the nurse should explain that the test:

will confirm a diagnosis of G6PD anemia.

requires the patient to be NPO for 12 hours prior to the test.

is a 24-hour urine specimen collection test.

entails administration of methylcellulose prior to the test.

Answer and Explanation

The Correct Answer is C

Choice A reason: The Schilling test is not used to diagnose G6PD anemia, which is a genetic disorder that causes red blood cells to break down when exposed to certain substances. The Schilling test is used to measure how well the body absorbs vitamin B12 from the intestine. ¹²

Choice B reason: The Schilling test does not require the patient to be NPO (nothing by mouth) for 12 hours prior to the test. The patient can drink water, but should avoid food for 8 hours before the test. ²

Choice C reason: The Schilling test is a 24-hour urine specimen collection test. The patient is given a dose of radioactive vitamin B12 by mouth and another dose of nonradioactive vitamin B12 by injection. The urine is collected for 24 hours to measure how much of the radioactive vitamin B12 is excreted. This indicates how well the body absorbs vitamin B12 from the intestine. ¹²

Choice D reason: The Schilling test does not entail administration of methylcellulose prior to the test. Methylcellulose is a type of laxative that can interfere with the absorption of vitamin B12. The patient should avoid taking any laxatives, antacids, or antibiotics before the test. ²³

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Correct Answer is D

Explanation

Choice A reason: I will call dietary to bring you breakfast is not the best response by the nurse. This response may imply that the nurse is willing to compromise the test results or the client's safety by allowing them to eat before the test. The nurse should explain the rationale for fasting and offer the client some water or ice chips if allowed.

Choice B reason: Food may interact with the dye that is used for the test is not the best response by the nurse. This response may be partially true, but it is not specific or clear enough to justify the need for fasting. The nurse should explain that food can affect the absorption and distribution of the radioactive tracer that is injected into the bloodstream for the test, and that eating can also interfere with the quality of the images.

Choice C reason: I will ask the health care provider if the test can be rescheduled is not the best response by the nurse. This response may suggest that the nurse is not confident or knowledgeable about the test protocol or the client's condition. The nurse should explain the importance and urgency of the test and reassure the client that they will be able to eat after the test is done.

Choice D reason: The procedure is usually completed on an empty stomach is the best response by the nurse. This response is accurate and concise, and it informs the client of the standard preparation for the test. The nurse should also provide more details about the test procedure and the expected duration, and answer any questions or concerns that the client may have.

A. Respiratory alkalosis B. Metabolic alkalosis C. Respiratory acidosis D. Metabolic acidosis

Correct Answer is D

Explanation

Choice A reason: Respiratory alkalosis is not the correct answer. Respiratory alkalosis is a condition where the blood pH is high (above 7.45) due to low carbon dioxide levels (below 35 mmHg) caused by hyperventilation. The client's blood pH is low (7.2) and the carbon dioxide level is normal (40 mmHg), which does not indicate respiratory alkalosis.

Choice B reason: Metabolic alkalosis is not the correct answer. Metabolic alkalosis is a condition where the blood pH is high (above 7.45) due to high bicarbonate levels (above 26 mEq/L) caused by excessive loss of acids or intake of alkali. The client's blood pH is low (7.2) and the bicarbonate level is low (19 mEq/L), which does not indicate metabolic alkalosis.

Choice C reason: Respiratory acidosis is not the correct answer. Respiratory acidosis is a condition where the blood pH is low (below 7.35) due to high carbon dioxide levels (above 45 mmHg) caused by hypoventilation. The client's blood pH is low (7.2) but the carbon dioxide level is normal (40 mmHg), which does not indicate respiratory acidosis.

Choice D reason: This is the correct answer. Metabolic acidosis is a condition where the blood pH is low (below 7.35) due to low bicarbonate levels (below 22 mEq/L) caused by excessive production or intake of acids or loss of alkali. The client's blood pH is low (7.2) and the bicarbonate level is low (19 mEq/L), which indicates metabolic acidosis.

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