The nurse is gathering data on a client with a diagnosis of tuberculosis. The nurse should review the results of which diagnostic test to confirm this diagnosis?
Sputum culture
Chest x-ray
Tuberculin skin test
Bronchoscopy
The Correct Answer is A
A. Sputum culture: A sputum culture is the definitive diagnostic test for tuberculosis (TB). It involves collecting a sample of the patient’s sputum and testing it for the presence of Mycobacterium tuberculosis, the bacterium that causes TB. This test confirms active TB infection and is critical in guiding treatment.
B. Chest x-ray: A chest x-ray can show abnormalities in the lungs that may suggest TB, such as infiltrates or cavities, but it cannot confirm the diagnosis. It is often used as a supporting diagnostic tool alongside other tests.
C. Tuberculin skin test: The tuberculin skin test (TST) is used to identify latent TB infection, not active TB. A positive result indicates that a person has been exposed to TB bacteria, but it does not confirm active disease.
D. Bronchoscopy: Bronchoscopy allows for direct visualization of the airways and collection of samples, but it is not the standard diagnostic test for confirming TB. Sputum culture remains the gold standard for diagnosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["C","D"]
Explanation
A. Blood urea nitrogen (BUN) 25 mg/dl (10 to 20 mg/dL): Elevated BUN can indicate dehydration or kidney issues, but it is not directly related to metabolic alkalosis.
B. Serum potassium level 4.8 mg/dL (3.5 to 5 mg/dL): This potassium level is within the normal range and does not indicate a cause of metabolic alkalosis. Metabolic alkalosis is more commonly associated with hypokalemia rather than normal potassium levels.
C. History of vomiting: Vomiting can lead to metabolic alkalosis due to the loss of stomach acid (hydrochloric acid), which reduces the body's acidity and raises the pH.
D. Overuse of antacids: Excessive use of antacids can contribute to metabolic alkalosis because antacids neutralize stomach acid, leading to an increase in blood pH.
E. Polycythemia: Polycythemia, an increased concentration of red blood cells, is not typically associated with metabolic alkalosis. It is related to other conditions such as chronic hypoxia or bone marrow disorders.
Correct Answer is C
Explanation
A. The excretion of calcium by the kidneys is related to electrolyte balance and bone health but does not directly contribute to hydrostatic pressure in the vasculature.
B. Osmotic pressure is the force exerted by solutes (such as plasma proteins) drawing water into the bloodstream, which opposes hydrostatic pressure. It does not directly contribute to hydrostatic pressure but rather counterbalances it.
C. Hydrostatic pressure is primarily generated by the force of the heart's contraction, which pushes blood through the arteries and capillaries. This pressure drives fluid out of the blood vessels into the surrounding tissues, a crucial process in nutrient and waste exchange.
D. Pressure applied by plasma proteins contributes to oncotic (colloid osmotic) pressure, not hydrostatic pressure. Oncotic pressure pulls fluid into the capillaries, opposing the outward force of hydrostatic pressure.
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