The nurse reviews the laboratory results for a patient and determines the viscosity of the blood is thick. Which laboratory result did the nurse check?
a. Arterial blood gas
b. Blood culture
c. Hematocrit
d. Potassium
ANS: C
The hematocrit, or the percentage of red blood cells in the blood, determines blood viscosity. Blood cultures determine the causative agent of an infection. Abnormal potassium levels can cause dysrhythmias. Arterial blood gases determine acid-base balance or the pH levels of the blood.
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