A nurse is analyzing the laboratory data on a client who has dehydration. Which finding should the nurse anticipate in a client who has fluid volume deficit?
Decreased serum osmolarity
Decreased hematocrit
Elevated blood urea nitrogen (BUN)
Lower urine specific gravity
The Correct Answer is C
A. Decreased serum osmolarity: Fluid volume deficit typically leads to an increase in serum osmolarity due to concentration of solutes in the blood, not a decrease.
B. Decreased hematocrit: Dehydration causes hemoconcentration, leading to an increase in hematocrit, not a decrease.
C. Elevated blood urea nitrogen (BUN): Dehydration results in decreased renal perfusion and concentration of urea in the blood, leading to elevated BUN levels.
D. Lower urine specific gravity: Dehydration causes increased urine concentration, resulting in higher urine specific gravity, not lower.
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Related Questions
Correct Answer is D
Explanation
A. Herpes simplex virus 2: Herpes simplex virus infections are not typically reportable to the
Centers for Disease Control and Prevention (CDC). These infections are commonly managed at the local level.
B. Candida albicans: Candida albicans infections are not typically reportable to the CDC. Candida species are common pathogens and are usually managed at the local level.
C. Staphylococcus aureus: Staphylococcus aureus infections, including methicillin-resistant
Staphylococcus aureus (MRSA), are not typically reportable to the CDC unless part of a larger outbreak or public health concern.
D. Lyme disease: Lyme disease is a reportable infection that requires notification to public health authorities, including the Centers for Disease Control and Prevention (CDC). Lyme disease is a vector-borne illness transmitted through the bite of infected ticks.
Correct Answer is A
Explanation
A.
A. Troponin is a protein released into the bloodstream when there is damage to the heart muscle (myocardium), such as during a heart attack. Elevated troponin levels indicate myocardial injury or damage, making this the correct choice for indicating myocardial damage.
B. Erythrocyte sedimentation rate (ESR) measures the rate at which red blood cells settle in a tube of blood. It is a non-specific marker of inflammation and is not specific to myocardial damage.
C. Human B-type natriuretic peptide (BNP) is released by the heart in response to increased pressure and volume. Elevated levels are indicative of heart failure, not necessarily myocardial damage.
D. Activated partial thromboplastin time (aPTT) measures the time it takes for blood to clot. It is used to monitor the effectiveness of anticoagulant therapy and is not specific to myocardial
damage.
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