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.
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
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Increasing the SA to AV node conduction time is not the goal of using diltiazem for variant angina. Diltiazem is a calcium channel blocker that slows down the conduction of electrical impulses in the heart, but this is not the main mechanism of action for relieving variant angina. Variant angina is caused by spasms of the coronary arteries that reduce blood flow to the heart muscle.
Choice B reason: This is the correct answer. Decreasing coronary artery spasm is the goal of using diltiazem for variant angina. Diltiazem relaxes the smooth muscle of the coronary arteries and prevents them from contracting. This improves the blood supply to the heart and reduces the pain and ischemia associated with variant angina.
Choice C reason: Diltiazem does not cause hyperexcitability in the myocardium. This is a false statement. Diltiazem has the opposite effect of reducing the contractility and excitability of the heart muscle. This lowers the oxygen demand of the heart and helps prevent anginal attacks.
Choice D reason: Increasing the heart rate is not the goal of using diltiazem for variant angina. Diltiazem actually decreases the heart rate by blocking the calcium channels in the sinoatrial node and the atrioventricular node. This reduces the workload of the heart and the oxygen consumption. A high heart rate can worsen angina by increasing the oxygen demand of the heart.
Correct Answer is C
Explanation
Choice A reason: An early morning headache is not the most common side effect of lisinopril. Lisinopril is a drug that lowers blood pressure and prevents the complications of heart failure. ¹ It belongs to a class of drugs called angiotensin-converting enzyme (ACE) inhibitors, which work by relaxing the blood vessels and reducing the workload of the heart. ¹ Headache is a possible side effect of lisinopril, but it is not very frequent or specific to this drug. ²
Choice B reason: Occasional nausea is not the most common side effect of lisinopril. Lisinopril is a drug that lowers the blood pressure and prevents the complications of heart failure. ¹ It belongs to a class of drugs called angiotensin-converting enzyme (ACE) inhibitors, which work by relaxing the blood vessels and reducing the workload of the heart. ¹ Nausea is a possible side effect of lisinopril, but it is not very frequent or specific to this drug. ²
Choice C reason: A chronic cough is the most common side effect of lisinopril. Lisinopril is a drug that lowers the blood pressure and prevents the complications of heart failure. ¹ It belongs to a class of drugs called angiotensin-converting enzyme (ACE) inhibitors, which work by relaxing the blood vessels and reducing the workload of the heart. ¹ However, ACE inhibitors can also cause a dry, persistent cough that does not go away with time or treatment. ² This cough is due to the accumulation of a substance called bradykinin in the lungs, which irritates the airways and triggers the cough reflex. ³ The cough can be annoying and interfere with the quality of life of the client, but it is not harmful or dangerous. ²
Choice D reason: A dry mouth after eating is not the most common side effect of lisinopril. Lisinopril is a drug that lowers the blood pressure and prevents the complications of heart failure. ¹ It belongs to a class of drugs called angiotensin-converting enzyme (ACE) inhibitors, which work by relaxing the blood vessels and reducing the workload of the heart. ¹ Dry mouth is a possible side effect of lisinopril, but it is not very frequent or specific to this drug. ² Dry mouth can be caused by many factors, such as dehydration, medication, or disease. It can be relieved by drinking water, chewing gum, or using saliva substitutes.
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