Collateral Damage
Which site is last for arterial selection and why?
Femoral artery does not have sufficient collateral supply.
Which test uses arterial blood to assess respiratory function?
ABG
Which needle system is typically used for ABG?
a syringe
involuntary contraction of an artery
arteriospasm
insert needle, fill, remove needle, cap and discard ___, check patients arm
expel air bubbles and mix
What is the collateral supply for the ulnar artery and where is it located?
The radial artery thumb side of the wrist.
Which analyte is used to identify acidosis and alkalosis?
pH
In addition to alcohol, what else is used to prep the site before ABG collection?
local anesthetic
sign of impaired circulation
numbness
before you inject local anesthetic you must
disinfect top of bottle with alcohol
What is the name of the test that assesses for sufficient collateral supply?
Modified Allen Test
What are the analytes of ABG?
pH, PaO2, PaCO2, HCO3, O2 saturation
What are the conditions of "steady state" status?
no exercise, suctioning, or respiratory changes
the circulation of undissolved matter
embolus
too little of this in the syringe can result in clotting
herparin
Which artery in the arm has no direct collateral circulation?
Brachial Artery
Analyte that accounts for increase in respiratory rate or respiratory disturbances.
PaCO2
What is the gauge of the needle used for ABG?
22 or smaller
common mistake in draw of arterial blood
drawing from a vein
too much of this in the syringe can result in acidosis
too much heparin
Using medical terminology describe the brachial artery's position?
medial anterior aspect of the antecubital fossa
Test requisition prerequisite which details the prescribed flow rate.
fraction of inspired oxygen
Name 3 of the special requisition requirements of an ABG.
FiO2, ventilation status, respiratory rate, body temperature
response related to hypotension
vasovagal response
What is the best way to be certain that you are obtaining an arterial blood sample?
the blood pulses into the syringe