The nurse is explaining to a patient the purpose of certain lab tests that have been ordered.
A carcinoembryonic antigen (CEA) test was ordered and the patient is asking what this value will indicate. Which of the following is correct?
CEA is a chemotherapy drug used to treat cancer.
CEA is a surgical procedure used to remove cancerous tumors.
CEA is a tumor suppressor gene that inhibits the growth of cancer cells.
CEA is a blood test used to detect and monitor certain types of cancer.
The Correct Answer is D
Choice A rationale
CEA is not a chemotherapy drug. Chemotherapy drugs are medications used to treat cancer, while CEA is a protein that can be measured in the blood.
Choice B rationale
CEA is not a surgical procedure. It’s a type of protein in the body that can be measured through a blood test.
Choice C rationale
CEA is not a tumor suppressor gene. Tumor suppressor genes are genes that regulate cell division and prevent the formation of tumors, while CEA is a protein that can be present in higher amounts in people with certain types of cancer.
Choice D rationale
CEA is a blood test used to detect and monitor certain types of cancer. It’s often used in people who’ve been previously diagnosed with certain types of cancer, most commonly colorectal cancer.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Development of gastric ulcers is not a common complication of an esophagogastroduodenoscopy (EGD) procedure. Gastric ulcers are typically caused by factors such as Helicobacter pylori infection or long-term use of nonsteroidal anti-inflammatory drugs (NSAIDs), not by the EGD procedure itself.
Choice B rationale
Perforation of the esophagus, stomach, or duodenum is a potential complication of an EGD procedure. During an EGD, a flexible tube with a camera is inserted through the mouth and down into the gastrointestinal tract. If the tube accidentally punctures or tears the lining of the esophagus, stomach, or duodenum, it can cause a perforation. This is a serious complication that requires immediate medical attention.
Choice C rationale
While allergic reactions to the sedation medication used during an EGD procedure can occur, they are not a direct complication of the EGD procedure itself. Allergic reactions would be related to the specific medication used for sedation and not the procedure.
Choice D rationale
Infection at the site of the procedure is not a common complication of an EGD. The procedure is performed using aseptic technique to minimize the risk of infection.
Correct Answer is D
Explanation
Choice A rationale
The UREA breath test does not measure ammonia levels. While H. pylori can convert urea to ammonia and carbon dioxide, the test specifically measures the level of carbon dioxide in the breath.
Choice B rationale
The UREA breath test does not measure hydrochloric acid. Hydrochloric acid is produced by the stomach to aid in digestion, but it is not measured in the UREA breath test.
Choice C rationale
The UREA breath test does not measure potassium. Potassium is an important electrolyte in the body, but it is not related to the presence of H. pylori or the UREA breath test.
Choice D rationale
The UREA breath test measures carbon dioxide in the breath.
H. pylori bacteria break down urea into ammonia and carbon dioxide. Excess carbon dioxide in the breath is a sign of an H. pylori infection.
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