暗記メーカー
ログイン
HEMATOLOGY pt. 1
  • Jibreel Espinosa

  • 問題数 100 • 12/13/2023

    記憶度

    完璧

    15

    覚えた

    35

    うろ覚え

    0

    苦手

    0

    未解答

    0

    アカウント登録して、解答結果を保存しよう

    問題一覧

  • 1

    What is the average blood in human?

    5L

  • 2

    Composition of blood

    55% plasma; 45% formed elements

  • 3

    fat, plasma, buffy coat, erythrocytes

  • 4

    Treat all specimens such as blood, body fluids, and unfixed tissue to be ______

    potentially infectious

  • 5

    Most effective way of breaking the chain of infection?

    handwashing

  • 6

    Handwash at least _____

    15 seconds

  • 7

    The process of destroying pathogenic microorganisms in inanimate object is?

    disinfection

  • 8

    Bleach (sodium hypochlorite) dilution is?

    1:10

  • 9

    all are correct order of draw except:

    sts, red top, coagulation tube, EDTA, gray top

  • 10

    I. yellow II. orange III. green IV. lavender and pink V. gray which of the ff. needs 8 inversions

    I, II, III, IV, V

  • 11

    What is the preferred concentration of anticoagulant in oxalate?

    1-2 mg/mL of blood

  • 12

    What is the preferred concentration of anticoagulant in citrate?

    3.2 - 3.8 g/dL

  • 13

    What is the preferred concentration of anticoagulant in fluoride?

    10 mg/mL of blood

  • 14

    What is the preferred concentration of anticoagulant in heparin?

    0.2 mg/mL of blood

  • 15

    Tourniquet should be applied _____ above the venipuncture site.

    3-4 inches

  • 16

    _____ is used for sample collection for blood alcohol measurement

    Benzalkonium chloride

  • 17

    What should be done if the patient refuses the venipuncture procedure?

    gently pursuade the patient

  • 18

    Skin is performed in: I. pediatric patients II. adults who are severely burned III. pregnant woman IV. elderly patients

    I, II, IV

  • 19

    Capillary puncture should not be more than _____ deep

    2mm

  • 20

    Hemoglobin is composed of _____ heme and _____ globin chains

    4 and 4

  • 21

    what is the hemoglobin count at birth?

    15-20 g/dL

  • 22

    what is the hemoglobin count of adult women?

    12-16 g/dL

  • 23

    what is the hemoglobin count of men?

    13-18 g/dL

  • 24

    It is also known as modified drabkin's reagent

    cyanmethemoglobin method

  • 25

    to shorten the reaction time in cyanmethemoglobin method, sodium bicarbonate is replaced by

    KH2PO4

  • 26

    _____ donates cyanide to hemoglobin

    potassium cyanide

  • 27

    sodium bicarbonate is replaced by KH2PO4 and shortens the reaction time from 15 minutes to _____

    3 minutes

  • 28

    What wavelength does cyanmethemoglobin method is using?

    540nm

  • 29

    All are measured in modified drabkins reagent except:

    sulfhemoglobin

  • 30

    It only measures the functional hemoglobin

    Blood Oxygen Capacity

  • 31

    Also know as Van Slyke Method

    Blood Oxygen Capacity

  • 32

    In Blood Oxygen Capacity (Van Slyke Method) 1g of Hb carries _____ of oxygen

    1.34

  • 33

    Hemoglobin iron content = 100g of Hb = _____ of Fe++

    0.347g

  • 34

    It is a method used for blood donor screening

    copper sulfate method

  • 35

    also known as copper sulfate method

    gravimetric method

  • 36

    If the hemoglobin is equal to or more than _____, the blood will sink in within _____ and the donor is accepted

    12.5 g/dL; 15 seconds

  • 37

    the specific gravity of the copper sulfate solution is _____

    1.053

  • 38

    In the copper sulfate method (gravimetric method), the drop of blood should be added from a height of _____

    1cm

  • 39

    acid hematin is also known as

    sahli's method

  • 40

    reagent for acid hematin

    0.1 N HCl

  • 41

    HbF is alkali _____

    resistant

  • 42

    Destruction of all forms of microbial life including spores

    Sterilization

  • 43

    It is a combination of hemoglobin with carbon monoxide and unable to transport oxygen

    carboxyhemoglobin

  • 44

    In carboxyhemoglobin the affinity for carbon monoxide is _____ greater than for oxygen

    200x

  • 45

    carboxyhemoglobin color and peak absorbance

    color: cherry-red peak absorbance: 576nm

  • 46

    methemoglobin can cause _____ discoloration of the blood

    chocolate brown

  • 47

    peak absorbance in methemoglobin

    630nm

  • 48

    when ferrous ion has been oxidized to ferric state it is called

    methemoglobin

  • 49

    sulfhemoglobin causes a _____ discoloration of the blood and has a peak absorbance at _____

    mauve-lavender; 618nm

  • 50

    It is the volume of packed RBCs that occupies a given volume of whole blood

    hematocrit

  • 51

    hematocrit at birth

    45-60%

  • 52

    hematocrit in females

    36-48%

  • 53

    hematocrit in males

    40-55%

  • 54

    microhematocrit tube is _____ long with an internal bore of _____ and can hold _____ of blood

    75mm; 1.2mm; 0.05mL

  • 55

    microhematocrit centrifuge is capable of _____ RCF _____ minutes

    10,000-15,000; 5

  • 56

    K2-EDTA whole blood is more preferred than K3-EDTA whole blood

    true

  • 57

    In microhematocrit method incomplete sealing will lead to falsely increase results

    false

  • 58

    In microhematocrit method, inadequate centrifugation will lead to falsely increased result

    true

  • 59

    In microhematocrit method, allowing the tube to stand longer than several minutes leads to falsely increased result

    true

  • 60

    overanticoagulation in microhematocrit method will lead to LOW hct and HIGH esr

    false

  • 61

    Increased amount of trapped plasma is found in: I. macrocytic II. microcytic III. spherocytosis IV. thalassemia V. dacrocytosis VI. hypochromic VII. sickle cell

    I, III, IV, VI, VII

  • 62

    equipment used in the macrohematocrit method

    wintrobe tube

  • 63

    length and size of internal bore in wintrobe tube

    115mm long; 3mm internal bore

  • 64

    rule of three is only applies in _____

    normocytic, normochromic

  • 65

    normal rbc count for newborns

    5.0-6.5x10^12/L

  • 66

    normal rbc count for females

    3.6-5.6x10^12/L

  • 67

    normal rbc count for males

    4.2-6.0x10^12/L

  • 68

    whole blood is diluted with isotonic diluting fluid to facilitate counting and prevent the lysis of RBCs

    true

  • 69

    wbc count for adults

    4.0-11.0x10^9/L

  • 70

    wbc count for newborns

    10.0-30.0x10^9/L

  • 71

    wbc count for 1 year of age

    6.0-17.0x10^9/L

  • 72

    wbc count procedure: statement 1: allow the dilution to sit for 10 minutes to ensure that the red blood cells (RBCs) have lysed statement 2: leukocytes counts should be performed within 2 hours of dilution

    only statement 1 is correct

  • 73

    diluent for wbc counting 1% ammonium oxalate 3% acetic acid 1% HCl

    true

  • 74

    diluent for rbc counting isotonic saline

    true

  • 75

    diluent for platelet count 1% ammonium oxalate

    true

  • 76

    size: 10-15 um nucleus: segmented in 2-5 lobes (2-4 lobes) cytoplasm: stains light pink due to the presence of secondary granules, and purple because of a few primary granules

    neutrophil (segmented)

  • 77

    size: 10-15 nucleus: sausaged shape, elongated curve cytoplasma: identical to segmented neutrophil

    neutrophil (band)

  • 78

    size: 12-17 um nucleus: dark purple, band shaped or segmented with only two lobes cytoplasm: contains large, spherical granules that stain orange-pink

    eosinophil

  • 79

    size: 10-14 um nucleus: light to purple staining, usually difficult to see due to overlying granules, bilobed cytoplasm: densely stained, dark violet granules

    basophil

  • 80

    size: 12-20 um nucleus: round, horseshoe-shaped or lobulated, usually folded or with convolutions cytoplasm: abundant cytoplasm with gray-blue containing indistinct granules giving it a ground glass apppearance

    monocyte

  • 81

    size: small (6-8 um), medium to large (8-12 um) nucleus: deep purple, compact, densely packed clumps, may be round or oval, or indented cytoplasm: stains pale to bright sky blue, may contain a few prominent reddish (azurophilic) granules (a.k.a robin's egg blue cytoplasm)

    lymphocyte

  • 82

    if the differential count shows the presence of immature granulocyte, it is termed _____ and may be found in disorders like leukemia and bacterial infections

    shift to the left

  • 83

    It refers to an increased number of hypersegmented neutrophils (megaloblastic anemia)

    shift to the right

  • 84

    It indicates the average volume of RBCs in femtoliters (fL)

    MCV

  • 85

    An expression of the average concentration of hemoglobin in red blood cells

    MCHC

  • 86

    It indicates the average weight of hemoglobin in the red blood cells

    MCH

  • 87

    RDW is

    1. determined from the RBC histogram; coefficient of variation of the MCV 2. directly proportional to the variation in RBC size (anisocytosis)

  • 88

    _____ is the true increase of MCHC

    spherocytosis

  • 89

    reference range of MCHC

    32-36 g/dL

  • 90

    reference range of MCH

    28-32 pg

  • 91

    reference range of RDW

    11.5-14.5%

  • 92

    what is the MCV, MCHC and RBC morphology of the following diseases/conditions IDA, thalassemia, sideroblastic anemia, defective iron use, chronic infection/inflammation

    MCV: < 80 MCHC: < 32 MORPHOLOGY: microcytic; hypochromic

  • 93

    what is the MCV, MCHC and RBC morphology of the following diseases/conditions hemolytic anemia, aplastic anemia, acute blooad loss anemia

    MCV: 80-100 MCHC: 32-36 MORPHOLOGY: normocytic; normochromic

  • 94

    what is the MCV, MCHC and RBC morphology of the following diseases/conditions liver disease, myelodysplasias, megaloblastic anemia

    MCV: > 100 MCHC: 32-36 MORPHOLOGY: macrocytic; normochromic

  • 95

    coverslip technique is the most common and most convenient technique for blood smear

    false

  • 96

    the size of the blood drop in blood smear must be _____

    2-3 mm

  • 97

    statement 1: a drop of blood that is too large can cause a short and thin smear statement 2: a drop of blood that is too small can cause a short and thick smear

    both statement is wrong

  • 98

    In manual wedge technique the angle must be _____

    30-45°

  • 99

    All factors can affect the thickness of a wedge smear except: I. pressure II. viscosity of blood III. angle IV. size of blood V. glass slide VI. speed

    II, V