Topic 1 - Capillary puncture and equipments Flashcards

1
Q

sterile, disposable, sharp-pointed or bladed
instrument that either punctures or makes an
incision in the skin to obtain capillary blood
specimens for testing

A

LANCET/INCISION DEVICES

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2
Q

also called microtubes, are special small plastic
tubes used to collect the tiny amounts of blood
obtained from capillary punctures.

A

MICROCOLLECTION CONTAINERS/MICROTUBES

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3
Q

They are often
referred to as “bullets” because of their size and
shape. Some come fitted with narrow plastic
capillary tubes

A

MICROCOLLECTION CONTAINERS/MICROTUBES

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4
Q

Types of finger puncture lancets

A

BD Microtainer
Tenderlett
Capiject
ACCU-CHEK

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5
Q

Types of heel puncture lancets

A

QuikHeel
Tenderfoot

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6
Q

are disposable, narrow-bore plastic that fill by capillary action and typically hold 50
to 75 μL of blood.

A

MICROHEMATOCRIT TUBES

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7
Q

Examples of microcollection container

A

Microtainer
MiniCollect
Capiject
Samplette
BD Microtainer

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8
Q

They are used primarily for manual hematocrit (Hct)

A

MICROHEMATOCRIT TUBES

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9
Q

also called packed cell volume (PCV), determinations.

A

Hematocrit

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10
Q

Heparin tubes
typically have a ____ on one end

A

Red or green band; nonadditive tubes have a blue band

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11
Q

Come in small trays are used to seal one end of microhematocrit tubes.

A

Sealants
(plastic, clay, wax-type)

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12
Q

Capillary puncture can be an appropriate choice for older children and adults under the following circumstances:

A
  • procedures such as chemotherapy.
  • There are no accessible veins
  • Several unsuccessful
    venipunctures have been performed and the requested test can be collected by capillary puncture.
  • The patient has thromboticorclot-forming tendencies.
  • The patient is apprehensive or has an intense fear of needles.
  • To obtain blood for POCT procedures such as glucose monitoring.
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13
Q

Capillary puncture is the preferred method of obtaining blood from infants and very
young children for the following reasons.

A
  • Infants have a small blood volume.
  • Large quantities removed rapidly can cause cardiac arrest.
  • Difficult and may damage veins and surrounding tissues.
  • Puncturing deep veins can result in hemorrhage, venous thrombosis, infection, and
    gangrene.
  • An infant or child can be injured by the restraining method used while performing a
    venipuncture.
  • capillary blood is preferred for some tests, such as newborn screening tests.
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14
Q

TESTS THAT CANNOT BE COLLECTED BY
CAPILLARY PUNCTURE

A

ESR Methods
Coagulation studies
Blood Cultures

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15
Q

Order of Draw for Capillary Specimens (Tube, additive, mix)

A

Blood Gas (Cap ends rotate between palms to mix)

EDTA (10)

Lithium Heparin (10)

Lithium Heparin with gel seperator (10)

Sodium Flouride/Potassium Oxalate (10)

Serum - Clot Activator (5)

Serum - No additive (0)

Newborn Blood Spot Card (Recommended to be collected seperately)

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16
Q

In selecting puncture site:

A

must be warm, pink or normal color and free from scars, cuts, bruises, or rashes

It should not be CYANOTIC, EDEMATOUS, INFECTED, OR BE A RECENT
PREVIOUS PUNCTURE SITE.

17
Q

In infants, puncture of the bone can cause:

A

OSTEOMYELITIS and OSTEOCHONDRITIS