Cystic fibrosis (CF) is suspected in a toddler. Which test is essential in establishing this diagnosis?
Bronchoscopy
Serum calcium
Urine creatinine
Sweat chloride test
The Correct Answer is D
This test measures the amount of chloride in the sweat, which is abnormally high in people with cystic fibrosis (CF). CF is an inherited disorder that affects the cells that produce mucus, sweat, and digestive juices.
Choice A is wrong because bronchoscopy is a procedure that allows the doctor to examine the airways and lungs, but it is not essential for diagnosing CF.
Choice B is wrong because serum calcium is a blood test that measures the level of calcium in the blood, which is not related to CF.
Choice C is wrong because urine creatinine is a test that measures the amount of creatinine in the urine, which reflects the kidney function, but it is not relevant to CF.
Normal ranges for sweat chloride test are:
- Less than 40 millimoles per liter (mmol/L) for children and adults
- Less than 30 mmol/L for infants younger than 6 months
A sweat chloride level of more than 60 mmol/L is considered positive for CF.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B"]
Explanation
Pitocin and Methergine are both medications used to manage postpartum hemorrhage (PPH) by causing the uterus to contract and reduce bleeding. Pitocin is the most effective and preferred medication for PPH prevention and treatment.
Choice C is wrong because Terbutaline is a medication that relaxes the uterus and is used to stop preterm labor, not PPH.
Choice D is wrong because Hemabate is a brand name for carboprost, which is a prostaglandin that can be used for PPH, but it has more side effects and contraindications than Pitocin or Methergine.
Choice E is wrong because Magnesium sulfate is a medication that prevents seizures in women with preeclampsia or eclampsia, not PPH.
Correct Answer is D
Explanation
Ulcerative colitis is a chronic inflammatory bowel disease that causes diarrhea, pain, and bleeding in the colon. Stress and certain foods can trigger or worsen the symptoms, so it is important to teach the mother how to help her son cope with stress and avoid triggers.
Choice A is wrong because ulcerative colitis is not an infectious disease that can spread to others.
Choice B is wrong because ulcerative colitis causes diarrhea, not constipation. Nutritional guidance is important, but not the main focus of teaching.
Choice C is wrong because the daily use of enemas is not part of the treatment plan for ulcerative colitis. Enemas can irritate the colon and cause more inflammation.
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