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Ch 10 Study Guide

Capillary Puncture Equipment, Principles and Procedures

TermDefinition
Capillary specimen/capillary puncture drops of blood drawn for specimen testing
Lancet/incision device disposable single use device used to puncture or make an incision in the skin
Microtubes or bullets small tubes used to collect small amounts of blood
Warming devices/heel warmers a commercially available device used to warm the site of capillary puncture
Interstitial fluid fluid between the cells
Intracellular fluid Fluid within the cells
Cyanotic bluish in color from lack of oxygen
Edematous swollen with fluid
Whorls spiral pattern of the fingertips
Calcaneus heel bone
Plantar surface bottom of the heel on the sole side
Posterior Curvature back (rounded part on backside) of the heel
Neonate newborn
NBS (newborn screening) state mandated testing of newborns for detecting genetic, hormonal or functional disorders
Phenylketonuria (PKU) genetic disorder characterized by the inability to metabolize phenylalanine
Capillary order of draw BEOS Blood gasses EDTA Other additives (except sodium citrate) Serum
EDTA tubes are drawn before other tubes to reduce effects of platelet clumping
Sodium citrate are never drawn on capillary blood
Capillary blood is a mixture of arterial, venous, and capillary blood in addition to interstitial and intracellular fluid
When a capillary site is warmed prior to puncture, blood flow is increased to the site up to 7 times
The first drop of blood must be wiped away to prevent contamination of excess tissue fluid and any residual isopropyl alcohol
The preferred capillary puncture site for children one year and older is the end, or distal segment of the ring or middle finger
The only puncture site for infants - 1 year of age is the lateral plantar surface of the heel
CLSI recommended depth of lancet insertion for an infant heel stick is no more than 2 mm deep
The thinnest area of a properly made blood smear is one cell thick and is called a feathered edge
Created by: user-2043425
 

 



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