A complete blood count is commonly performed before Joe goes into surgery. What does this test seek to identify?
A. Potential hepatic dysfunction indicated by decreased blood urea nitrogen (BUN) and creatinine levels.
B. Low levels of urine constituents normally excreted in the urine.
C. Abnormally low hematocrit (HCT) and hemoglobin (Hb) levels.
D. Electrolyte imbalance that could affect the blood’s ability to coagulate properly.
Correct Answer: C. Abnormally low hematocrit (HCT) and hemoglobin (Hb) levels.
Low preoperative HCT and Hb levels indicate the client may require a blood transfusion before surgery. If the HCT and Hb levels decrease during surgery because of blood loss, the potential need for a transfusion increases.
Option A: Possible renal failure is indicated by elevated BUN or creatinine levels.
Option B: Urine constituents aren’t found in the blood. They are found in urine specimens.
Option D: Coagulation is determined by the presence of appropriate clotting factors, not electrolytes.