A nurse is monitoring a client who is dehydrated. Which of the following laboratory findings should the nurse report to the provider?
Hematocrit 45% (37% to 52%)
Creatinine 0.9 mg/dL (0.5-1.2 mg/dL)
BUN 25 mg/dL (10-20 mg/dL)
Urine specific gravity 1.028 (1.005 to 1.030)
The Correct Answer is C
A. Hematocrit 45% (37% to 52%): This value is within the normal range for hematocrit. Dehydration may increase the hematocrit due to a relative increase in red blood cell concentration, but 45% is still within normal limits.
B. Creatinine 0.9 mg/dL (0.5-1.2 mg/dL): This value is within the normal range for creatinine, indicating normal kidney function.
C. BUN 25 mg/dL (10-20 mg/dL): An elevated BUN level is a sign of dehydration as it reflects increased protein breakdown and decreased renal perfusion. This value is above the normal range and should be reported to the provider.
D. Urine specific gravity 1.028 (1.005 to 1.030): This value is within the normal range and indicates that the kidneys are concentrating urine, which is typical in dehydration as the body tries to conserve water.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Potassium 2.5 mEq/L: This critically low potassium level can cause life-threatening cardiac dysrhythmias and requires immediate intervention.
B. Urine specific gravity 1.035: While indicative of dehydration, it is not life-threatening and can be addressed after correcting the potassium imbalance.
C. Weight loss of 3% of total body weight: Significant but not the most critical concern in the immediate term.
D. Blood glucose 150 mg/dL: Elevated but not urgent compared to the hypokalemia.
Correct Answer is C
Explanation
A. Urine output 20 mL/hr: A urine output of 20 mL/hr is on the low side but can still be expected in dehydration, as the body attempts to conserve water. Normal urine output is 30 mL/hr or more, so this could still be a sign of dehydration.
B. Sodium 142 mEq/L (136 to 145 mEq/L): This sodium level is within the normal range. Dehydration may cause sodium to be elevated if water loss is more significant than sodium loss, but a normal value does not indicate dehydration.
C. Cool skin: Cool skin is a typical finding in dehydration, particularly in severe cases, due to reduced peripheral circulation and vasoconstriction as the body tries to maintain core temperature and blood pressure.
D. Bradycardia: Dehydration usually causes tachycardia as a compensatory mechanism to maintain blood pressure and perfusion, not bradycardia.
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