CH 19 LAB Flashcards Preview

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Flashcards in CH 19 LAB Deck (107)
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1

Lab form?

SF 545

2

Listing of SF forms?

P-117

3

Alcohol pads contain what percent solution?

70% isopropyl alcohol

4

Best finger for stick?

Middle or ring (puncture perpendicular to grooves)

5

Length of lancet puncture depth?

No greater than 2mm

6

What is the preferred source of blood specimen obtained for clinical examination

venipuncture

7

When performing a finger puncture the first drop should be wiped away to avoid?

dilution of the specimen with tissue fluid

8

Tourniquet placement?

3–4 inches above the site

9

Venipuncture is what degree

15–30 with the bevel up

10

At what point in the venipuncture procedure should the tourniquet be removed

once blood flows freely into tubes

11

Max TQ time?

1 minute

12

When should specimens be labeled

Never before the sample is collected, but before leaving the patient

13

which color tube is the best choice for routine chem tests

RED TOP

14

Which color tube is the best choice for a CBC

lavender top

15

Additive in green top?

Heparin

16

The part of the microscope on which the prepared specimen is placed for examination is called the

Mechanical stage

17

What objective should be used for a detailed history of stained bacterial smears

oil immersion

18

Three objective lenses on microscope?

10x low power, 40x high power, 100x oil-immersion

19

Usual magnification of ocular lens?

10x (multipy this by the objective lens)

20

A CBC includes what five tests?

 Total red blood cell (RBC) count

 Hemoglobin determination (Hgb)

 Hematocrit calculation (Hct)

 Total white blood cell (WBC) count

 White Blood Cell Differential count

21

function of hemoglobin in the body

Transport oxygen to the tissues

22

Factors that affect the hgb values

age, sex , altitude

23

a low rbc count may indicate that the patient has what condition

anemia

24

Hemoglobin grams per 100 ml of blood in men/women?

MEN: 14–18 WOMAN: 12-16

25

Manual methods for determining blood hemoglobin?

Mixed with cyanomethoglobin and turns brownish color

26

What is the term for the volume of erythrocytes expressed as a percentage of the volume of whole blood in a sample

hematocrit

27

Hematocrit values?

FEMALE: 37–47 MALE: 42-52 PERCENT

28

Normal WBC count?

4,800-10,800 cells per cubic millimeter

29

Select the term used to describe an abnormally high WBC count

Leukocytosis

30

List conditions that may cause leukopenia

radiation, Psittacosis, anaphylactic shock, viral infections