சனி, 10 ஜனவரி, 2015
சனி, 3 ஜனவரி, 2015
correction forumula for HIGH PCV /HCT in coagulation tests.
Correcting high hematocrit coagulation
- Packed cells up this high indicates a high hematocrit (ᡯ) the patient may need a custom draw.
- This hematocrit is 40.5%
- Use the following formula to customize a collection for a patient with a hematocrit greater than 55%
- Step 1. Solve for “a” where a= 3.2 * (100-the patient’s hematocrit)/ 55
- Step 2. Solve for “y” where y = a * 0.3 / 3.2
- y is the volume of 3.2% citrate needed to add
- to 2.7 ml of patient’s blood.
- Example: Let’s say the patient has a Hct of 63%
- Step 1. Solve for “a” where a= 3.2*(100-63)/ 55
- a= 2.15
- Step 2. Solve for “y” where y = 2.15 * 0.3 / 3.2
- y= 0.2
- You would now use 0.2ml of 3.2% citrate for
- 2.7 ml of patient’s blood.
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