Dermal/Capillary puncture
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| capillary or dermal punctures are frequently used for: | infants and children or hard draws
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| Capillary punctures can be used on patients who are: | obese, elderly, or severely burned
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| blood for tests such as ___________ can not be used with a capillary puncture: | coagulation tests or blood cultures
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| Dermal puncture blood is obtained from the: | capillaries
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| capillaries join the smallest veins and arteries called: | venues and arterioles
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| Capillary or dermal blood is a: | mix of venous and arterial blood and interstitial fluid
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| interstitial fluid is the: | fluid between cells and tissues
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| Capillary blood is higher in_______. and lower in _____: | glucose and potassium
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| The draw back to performing dermal or capillary punctures is: | the small amount of blood able to be collected
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| The system for preparing for a capillary or dermal puncture is: | the same as a venipuncture
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| The skin should be: | pink, warm, free of scars, cuts, rashes, and bruises
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| Site for a capillary puncture is: | middle/third finger, or ring/fourth finger
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| The site on the foot used for a dermal puncture is: | the medial lateral region of the plantar surface of the heel on infants
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| what two sites need to be approved by a doctor to be used for a dermal or capillary puncture? | Toe or earlobe
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| Always puncture ___________ the finger print | across or against the grain of
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| Dermal punctures can be done on : | infants under 1 year old not walking
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| Never do a dermal puncture on a child who: | is walking
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| Performing a dermal on a child who is walking can: | cause pain and infection
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| Do not puncture the: | calcaneus/heel bone
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| Puncturing the calcaneus can cause: | osteomyelitis, an infection of the bone
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| Never puncture deeper than | two mm
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| This is caused by a build up of fluid | edema
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| If both hands are edematous then you should | do a venipuncture
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| Site should not be on same side as a: | mastectomy
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| pre-warming the site: | increases blood flow sevenfold producing a more accurate result
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| Microspecimen containers vary in size and shape, some: | have straw like tubes used for collection
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| safety puncture devices have: | a spring loaded blade that retracts after use
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| Puncture device is selected according to: | age and size of the patient
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| Premature neonate puncture site and depth | heel, 0.85mm
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| full term neonate puncture site and depth | heel, less than 2mm
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| children 6 months to 8 years old puncture site and depth | finger, 1.5
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| Child over 8 year old to adult puncture site and depth | finger, 2.4
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| If alcohol is not allowed to dry before incision: | hemolysis will occur
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| If incision is made between fingerprint lines the blood: | channels into the ridges and won't form good drops
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| Always ___________- the first drop | wipe away
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| Do not | milk the site
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| Milking the site causes | contamination/ diluted sample
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| What is the order of collection | edta, heparin, sodium fluoride, non-additive or serum
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| Do not puncture | over old sites
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| Be aware of _______ __________ in infants | blood volumes
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| Collecting too much blood from an infant can cause | iatrogenic anemia or exsanguination
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| Blood collection guidelines are based on | body weight
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| If blood loss exceeds 10% of body volume | death can occur
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| Do not ever ____________ on kids under the age of 2 | use band aids
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Created by:
CWillems
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