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Peri-operative Labs
UTHSCSA N3802 Peri-operative Labs
| Question | Answer |
|---|---|
| Complete Blood Count Definition | the calculation of the cellular (formed elements) of blood. A major portion is the measure of the concentration of white blood cells, red blood cells, and platelets in the blood. |
| White Blood Cell (WBC) Definition | The number of white blood cells in a volume of blood. |
| WBC Normal Range | 5,000 – 10,000 cells/millimeter (mm)³ |
| Red Blood Cell (RBC) Definition | The number of red blood cells in a volume of blood. |
| RBC Normal Range for Men | 4.7 – 6.1 million cells/millimeter (mm)³ |
| RBC Normal Range for Women | 4.2 – 5.4 million cells/millimeter (mm)³ |
| Hemoglobin (Hgb) Definition | The amount of hemoglobin in a volume of blood. Hemoglobin is the protein molecule within red blood cells that carries oxygen and gives blood its red color. |
| Hemoglobin (Hgb) Normal Range for Men | 14 -18 grams/100 mL |
| Hemoglobin (Hgb) Normal Range for Women | 12 – 16 grams/100 mL |
| Hematocrit (Hct) Definition | The ratio of the volume of red cells to the volume of whole blood. |
| Hematocrit (Hct) Normal Range for Men | 42% - 52% |
| Hematocrit (Hct) Normal Range for Women | 37% - 47% |
| Platelet Count Definition | The number of platelets in a volume of blood. Platelets play a vital role in blood clotting. |
| Platelet Count Normal Range | 150,000 – 400,000 cells/cubic millimeter (mm)³ |
| Prothrombin Time (PT) tests what? | Reveals clotting ability of blood. |
| Prothrombin Time (PT) Normal Range | 11 – 12.5 seconds |
| Partial Thromboplastin Time (PTT) Normal Range | 60 – 70 seconds |
| Activated Partial Prothrombplastic Time (APTT) tests what? | Reveals clotting ability of blood. |
| Activated Partial Prothromboplastic Time (APTT) Normal Range | 30 – 40 seconds |
| Why is APTT called Activated | because activators have been added to the PTT Test. Reagents to shorten the normal clotting time. If the patient is on anticoagulant – you will expect the APTT to be 1.5 to 2.5 X the normal APTT |
| What should be done if the APTT less than 50 seconds when patient is on anticoagulant therapy? | patient requires more Heparin due to not receiving the therapeutic dose. |
| What should be done if the APTT greater than 100 seconds when patient is on anticoagulant therapy? | indicates that the patient is getting too much Heparin and the risk of serious spontaneous bleeding exists. |
| Serum Electrolytes Test is done to…? | Reveal fluid and electrolyte imbalances. |
| Sodium (Na) Normal Range | 136 – 145 mEq/L |
| Potassium (KCL) Normal Range | 3-5 – 5.0 mEq/L |
| Chloride (Cl) Normal Range | 98 – 106 mEq/L |
| Bicarbonate (HCO3) Normal Range | 21 – 28 mEq/L |
| Renal/Kidney Lab Studies include what tests? | serum creatinine and Blood Urea Nitrogen |
| Serum Creatinine Tests what? | Ability of kidneys to excrete creatinine, creatinine is a by-product of muscle metabolism. |
| Serum Creatinine Normal Range for Men | 0.6 – 1.2 mg/100 mL |
| Serum Creatinine Normal Range for Women | 0.5 – 1.1 mg/100 mL |
| Blood Urea Nitrogen tests what? | Ability of kidneys to excrete urea and nitrogen indicates renal function. |
| Blood Urea Nitrogen (BUN) Normal Range | 10 – 20 mg/100 mL |
| Coagulation Studies include what tests? | Prothrombin Time (PT), Partial Thromboplastin Time (PTT), and Activated Partial Prothrombplastic Time (APTT) |
Created by:
dietrichl
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