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HEMATOLOGY 1 > BC2 > Flashcards

BC2 Flashcards

1
Q
A
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2
Q

Most Common Site for Venipuncture

A

Antecubital Fossa (Median, Cephalic, Basilic)

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3
Q

Cleansing The Site Motion

A

Friction of Back & Forth

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4
Q

Angle Between Skin & Needle

A

<30 Deg

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5
Q

Length of Time of torniquet Application

A

< 1 Minute/60 Secs

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6
Q

Cause of Spx Hemolysis

A

Prolonged torniquet
Moisture/Contamination in Blood Tube
Needles with too Small Bores
Excessive Agitation
Frothing (Bubbles) in Sample

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7
Q

Effects of Prolonged torniquet Application (Hhs)

A

Hemolysis
Hemoconcentration
Shortened Coagulation Time

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8
Q

Condition Which Venous Flow is Slowed

A

Stasis

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9
Q

Local Accumulation of FVIII & VWF Results in

A

False Shortening of Coagulation Test

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10
Q

Distance of torniquet

A

3-4 inches or 7.5 to 10 cm

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11
Q

Most Common Needle Size for Adult Venipuncture

A

21 G ; 1 inch Length

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12
Q

Phlebotomist Should Never Puncture More Than

A

Twice

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13
Q

When to Replace Sharp Container

A

No More Than Three Quarters Full

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14
Q

Most Common Cause of A Needle Puncture

A

Improper Disposal

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15
Q

Usual EDTA Used Component

A

Dipotassium (K2)

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16
Q

CBC is Also Called

A

Hemogram

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17
Q

Optimal Anticoagulant Conc for Hema

A

1.5 Mg/mL of Blood

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18
Q

Blood Spx for CBC Must Be Analyzed within

A

6 hours of Collection (Room Temperature Storage); 24 hours if Ref Temperature

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19
Q

Blood Smear Should Be Made within

20
Q

EDTA Prevents Platelet

A

Aggregation

21
Q

EDTA Causes Swelling of Platelets That Approximately increases for

A

20% During The First Hour

22
Q

Excessive EDTA Causes

A

Decreased Hct, ESR, Degenerate Changes in WBC, increased MCHC

23
Q

RBC Parameters

A

RBC Count, Hgb, Hct, RBC indices, RDW, Retic Count

24
Q

WBC Parameters

A

WBC Count, Neut, Lymph, Mono, Eo, Baso (Relative & Absolute Count)

25
Q

Platelet Parameters

A

Platelet Count; Mean Platelet Volume

26
Q

Formation of Ring-Shaped Molecular Complex in Which Metal Ions is Covalently Bound

27
Q

Process in Which A Current Test Result is Compared with The Result of The Same Test From The Previous Specimen From The Same Patient

A

Delta Check

28
Q

Delta Check Method of QC

A

Utilizes The Patient’s Own Data to Monitor Population Values

29
Q

Test Being Ordered Automatically Based On The Results of Prior Tests or Preset Parameters

A

Reflex Test

30
Q

Any Numerical Value That Depicts An Entire Population

31
Q

Heparin Anticoagulant is Used for

A

Flow Cytometry, Plasma Chem, Blood Gas Studies

32
Q

Optimal Anticoagulant Conc for Heparin

A

15-20 Units/mL Blood

33
Q

Actions of Heparin

A

Binds Anti-Thrombin/inhibits Thrombin & Factor Xa

34
Q

Heparin That Causes Least Interference in Chemistry Testing

A

Lithium Heparin

35
Q

Heparin Causes Cellular Clumping (Especially of Platelets), Which Leads to

A

Pseudoleukocytosis (Falsely High WBC Count) & Pseudothrombocytopenia (Falsely Low Platelet Count)

36
Q

Heparin Causes in Blood Smears

A

Bluish Coloration of The Background On Blood Smears Stained with A Romanowsky Stain Because of Its pH

37
Q

Critical Ratio for 3.2% Sodium Citrate Between Anticoagulation & Blood

38
Q

Forceful Mixing or An Excessive Number of Inversions Can Do What in Sodium Citrate

A

Activate Platelets & Shorten Clotting Times

39
Q

Factors That Affect Coagulation Results; Shortened Coagulation Result (Heparin)

A

Hemolysis, Excessive Agitation, Prolonged torniquet Application, Excessive Needle Manipulation, Platelet Contamination

40
Q

Prolonged Coagulation is Due to

A

Presence of Clots, increased Acidity Concentration

41
Q

Invert Each Tube Containing Additive

A

Immediately

42
Q

Only Blood Culture Tubes, Glass Nonadditive Serum Tubes, or Plastic Serum Tubes without A Clot Activator May Be Collected Before The

A

Coagulation Tube

43
Q

Black Top Anticoagulant for Westergren

A

3.8% Na Citrate (Blood 4:1)

44
Q

Pink top is Used for What Section

A

Blood Bank Tests (WB, Hema Determination)

45
Q

Light Blue May Contain Either

A

3.2% Na Citrate or CTAD (Citrate, Theophylline, Adenosine, Dipyridamole)

46
Q

CTAD Uses

A

Coagulation Test, Platelet Function Assay (PF4 & B-Thromboglobulin Assays)

HEMATOLOGY 1 (29 decks)

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