Laboratory and Imaging- Exam 3

At the bedside

Where do you label the sample for specimen collection?

Step 1

For imaging studies, verifying the order is what step

complete blood cell count

CBC represents

5,000-10,000 mm3

WBC reference range

12-18 g/dl

Hemoglobin (Hgb)

40-50

Hematocrit (HCT)

4.2-5.9 million

RBC count

100,000-400,000

Platelet count

Carries oxygen

Hemoglobin does what

• Identify source of bleeding

• Anemia

• Activity tolerance

What is concern if hemoglobin is low?

Measures rbc in the blood and also carries oxygen

Hematocrit does what?

Also carries oxygen similar to H&H

RBC does what?

Controls clotting

What does patalet count do?

3.5-5.0

Potassium levels are usually

BUN and creatinine

To make sure the kidneys are functioning properly what tests should we run?

135-145 mEq/L

Sodium levels are normally

8.0-20

Normal range for Blood Urea Nitrogen levels are

0.7-1.4

Creatinine levels should be within what range?

10-13.1

For coagulation studies, prothrombin time should usually be within what range?

0.88-1.6

For coagulation studies, the international normalized ratio should be within what range?

Time will increase to coagulate

What will happen to the INR time for a patient with blood thinners

Anerobic

Which blood culture do you do first?

Anarobic

What blood culture comes second?

15 minutes

What is the time difference between taking blood cultures?

Blue

What color top for the blood tubes must you do first and fill to the top?

• No tissue paper in the bedpan

• Do not have any fecal matter in the bedpan

What should the pt not do during a 24 hr urine collection?

X-rays

• No contrast is used in this radiography

• Emits radiation

• Positive scan means a problem

Allergic reaction

Contrast can cause what?

Not for pregnant patients

Risk factors with radiation

CT Scans

• May use oral or IV contrast to illuminate images for this radiography

• Emits radiation

• Normal= negative

MRI

• No radiation emitted

• May use IV contrast to illuminate

• Normal= negative

• Detailed anatomic view

Metals, pacemakers, jewelry

What is not good for MRI machines that can be on a pt

Ultrasound

• Visualizes organs

• No contrast used, no radiation

• Normal= negative