Capillary Puncture Flashcards
Blood collection from a vein
Venipuncture
Carrie’s blood back to heart
Veins
Carries blood away from heart
Arteries
One thin layer, arterial and venous blood
Capillaries
Generated by physician/provider
Requisition
Ways to verify patient before performing capillary Puncture/venipuncture
Verify D.O.B
Patient labels
Most critical error a phlebotomist could make before collecting a blood specimen
Misidentification of a patient
Positions for patients when performing blood collection methods
Semi reclining position
Phlebotomy chair
All fluid except blood found in space between tissues (tissue fluid)
Interstiatal fluid
In what circumstances should capillary puncture not be used?
Needing large amount of blood
Poor circulation in hands/feet
Edema
Lancet
Sterile
Disposable
Retractable
Depth of heel stick for infant
No more than 2mm
Depth of finger stick for adult
2-3mm
Types of capillary puncture collection containers
Microtainer
Capillary tube
Point of care testing
Direct contact patient setting
Collecting small amounts of blood
Microcollection
Blood moves freely into the tube
Capillary action
Inflammation of bone caused by bacterial infection
Osteomyelitis
Cyanotic
Blue
Oxygen deficiency
Methods to increase blood flow to capillary puncture sites
Massage site
Apply warm towel
Proper sites for finger and heel sticks
Middle/ring finger
Medial/lateral plantar surface of heel
Capillary Puncture procedure
Warm site Sanitize, make sure alcohol dries Proper Lancet Hold perpendicular Poke Wipe away first blood Fill container
What if blood flow stops during collection of a capillary blood specimen
Repeat entire procedure
Conditions tested for newborn screening and why
PKU
Hypothyroidism
Look for abnormalities, looking for certain enzymes
What could happen if newborn conditions aren’t screend
Mental retardation, abnormalities
What is the first time frame for blood collection for newborn screening
24-72 hrs after birth
What setting is the blood collection generally performed at newborn screening
Hospital nursery
Heel stick collection procedure/guidelines fir newborn screening
Medial/lateral planters surface of heel
No deeper than 2mm
Remove first drop.of blood
