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
Explanation
A. The intracellular space contains most of the body's water: While it is true that the intracellular space holds the majority of the body's water, this statement does not specifically relate to the concept of fluid volume deficit or how the body responds to it.
B. A fluid volume deficit inhibits baroreceptors: In fact, fluid volume deficit activates baroreceptors due to reduced blood pressure, leading to compensatory mechanisms like increased heart rate and vasoconstriction to maintain blood pressure.
C. When the body loses water, the intravascular space experiences the water loss: This statement accurately describes the process during fluid volume deficit. The intravascular space loses water, leading to decreased blood volume, which can result in symptoms like hypotension and reduced tissue perfusion.
D. A negative fluid balance occurs when the body takes in more water than the body needs: This statement is incorrect; a negative fluid balance occurs when the body loses more water than it takes in, leading to dehydration or fluid volume deficit.
Correct Answer is A
Explanation
A. The client has developed confusion: Hypotonic fluids can cause a rapid shift of water into cells, potentially leading to cerebral edema. This can manifest as confusion or altered mental status, which is a serious adverse effect requiring immediate attention.
B. The client's serum sodium is 140 mEq/L (135 to 145 mEq/L): A serum sodium level within the normal range indicates that the hypotonic fluid therapy is likely effective in correcting hypernatremia, and does not suggest an adverse effect.
C. The client has a positive Chvostek's sign: A positive Chvostek's sign is indicative of hypocalcemia rather than an adverse effect of hypotonic fluid administration. This sign is related to low calcium levels and is not a direct result of hypotonic fluid therapy.
D. The client's blood urea nitrogen (BUN) level is 18 mg/dL (10 to 20 mg/dL): This BUN level is within normal limits and does not suggest an adverse effect of hypotonic fluid therapy. BUN levels can be affected by various factors, but this value alone is not indicative of an adverse reaction.
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