HEMATOCRIT

Jef Marc Valencia · 73問 · 2年前

通報

問題一覧

Hematocrit is also known as the

PACKED CELL VOLUME

It is the ratio of the volume of erythrocyte to that of the whole blood volume

HEMATOCRIT

Hematocrit is reported as

PERCENT, DECIMAL FRACTION

The unit of hemotocrit when expressed in decimal fraction

L/L

Hemtocrit is used for the calculation of the red cell indices like

MEAN CORPUSCULAR VOLUME, MEAN CORPUSCULAR HEMATOCRIT CONCENTRATION

The other use of hematocrit which is the estimation between hemoglobin and hemtocrit

ROUGH QUALITY CONTROL

1 Hct point is equivalent to

0.34 gm Hb/100mL, 107000 RBC/cumm WB

Ways to determine Hct

INDIRECT, DIRECT

Method of Hct determination employed by automated machines

INDIRECT

Manual determination of Hematocrit

DIRECT, SPUN

The only Hct micromethod determination which utilizes capillary tubes

ADAMS

Wintrobe method is a direct hct macrodetermination uses what reagent

DOUBLE OXALATE

Hadens method is a direct hct macrodetermination uses what reagent

1.1% NA OXALATE

Van Allen is a direct hct macrodetermination uses what reagent

1.6% NA OXALATE

Sanford Magath Method is a direct hct macrodetermination uses what reagent

1.3% NA OXALATE

Brays method is a direct hct macrodetermination uses what reagent

HEPARIN

All Direct Hct Determination requires what to the blood sample

CENTRIFUGATION

What are the 2 sealers in Hct Determination

CLAY, PARAFFIN

Red banned xapillary tubes are

HEPARINIZED

Approx length of capillary tubes

70-75 MM

Diameter of capillary tubes

1 MM

These C.Tubes are used in samples that are non anti coagulated like the collected in skin puncture

HEPARINIZED

These C. Tubes are used for samples that are coagulated with EDTA

NON HEPARINIZED

Over Anti coagulation will make the RBCS causing a_in hematocrit volume

SHRINK, DECREASE

Optimal volume of blood to be filled in a C. Tube

3/4, 0.05 mL

Anti coagulant used in C. Tube

HEPARIN

How many mm do sealers should be putted in a C. Tube to prevent washing out during centrifugation

4-6

What is the RCF for the centrifugation of hematocrit tubes

10000-15000 g/5 MIN

Dimensions of Wintrobe Tube Length: Width: Blood volume capacity:

115, 3, 100

The Left side which has a graduation of Top to Bottom is used for

ERYTHROCYTE SEDIMENTATION RATE

This measures the settling of RBC

ESR

The right side of wintrobe tube with a graduatiom of bottom to top is used for

MACROHEMATOCRIT

What is the centrifugation settings of Wintrobe Macrohematocrit determination

3000 RPM/30 MIN

Referece range for Hct in males

0.42-0.50

Reference range for Hct in females

0.36-0.45

Reference for Hct in infants

0.45-0.60

This the abnormal condition of the bone marrow characterized by increased growth of RBCs

POLYCYTHEMIA VERA

Hct may elevates in these conditions

POLYCYTHEMIA VERA, HEMOCONCENTRATION, DEHYDRATION

A condition in which the ht of packed cell is within normal range of the plasma volume is decreased

HEMOCONCENTRATION, DEHYDRATION

Conditions that may induced hemoconcentration

SUDDEN CHANGE OF POSITION, PROLONGED TOURNIQUET

How many percent of water does a 55% of plasma has

91-92

Indicate the cause

HEMOCONCENTRATION, DEHYDRATION

Hct may decreased in these conditions

ANEMIA, HYDRATION

Type of anemia due to destruction

HEMOLYTIC

Type of anemia due to decrease production

APLASTIC

Indicate the cause

ANEMIA

Indicate the cause

HYDRATION

Increase of plasma volume may lead to

HEMODILUTION

Indicate the cause

ACUTE BLOOD LOSS

Excess anticoagulant used in hematocrit termination may lead to what result

FALSE NEGATIVE

Maximum hour duration of blood sample prior to test in hematocrit determination

This is the reading error in laboratory caused by improper angle of the eye level prior to the tube

PARALLAX

This may cause a false increase in hematocrit determination due to loose pack of red blood cell

INADEQUATE CENTRIFUGATION

Maximum minute duration of reading the hematocrit after centrifugation

This refers to the error of the sample

PHYSIOLOGIC

COMPH Lesson 5

COMPH Lesson 5

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dis 5

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Introduction

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