Chap # 6 Blood Gas Lab Flashcards
Arterial Blood Gas Kit cosist on?
- 3 - 5 cc Syringe, pre- heparinized)
- 22 ga x 2 needle
- Alcohol swap
- Gauze pad
- Bizohard bag
- Misc. Items
ABG Collection Site
ABG Collection Site
- Radial
- Bracheal
- Femoral
- Dorsalis Pedis
Most common site for ABG Specimen is?
The Radial Artery is the most common because there is collateral cinculation to the hand (Ulnar Artery) in case that we damage the radial artery.
Radial Artery Angle of insertion is?
45 angle degree
Bracheal artery angle of Insertion?
Is 60 - 90 Angle Degree
Femoral Artery Insertion Angle is?
90 Degree almost straight down
TRUE or FALSE
After Blood Sample is taken, site must be compressed until clotted.
TRUE
Hazards of ABG
- Hematoma
- Arterial laceration
- Hemorrhage
- Vasovagal reaction
- loss of Limb
TRUE or FALSE
Blood Gases should be collected anaerobically?
TRUE
No air should be in ABG sample, Blood gas is a living tissue, as a consecuence will consume O2 and create CO2 afecting the sample
ABG Handling
- Blood gas specimen must be adequately anticuagulated (Heparin)
- sample volume should be 1 - 2 ml (enough to run at least twice in case first one did not work)
- Sample should be analyzed as soon as possible ( plastic syringe can be iced for 15 min)
- Specimen should be acequatelly identified
- Transport specimen in biohazard container
- Temperature correct specimen in analizer.
What should be an adequatelly specimen identification?
- Patient name/ ID number
- Date/ Time
- Ordering Physician
- Accession Number
- Puncture site
- O2 adjunct and FiO2
- Ventilation setting
Increased Body temperature, how will affect ABG sample?
It will ↑PO2, ↑PCO2, ↓PH.
Decreased Body temperature, how will affect ABG sample?
It will ↓PO2, ↓PCO2, ↑PH
Blood Gas Analyzer measures:
- PH
- PCO2
- PO2
this is only blood gas, not cooxymetry
what is the PH electrode
Sannz electrode
What is the PCO2 electrode?
Severinghaus electrode, May be also refered as a modified Sanz Electrode
What is the PO2 electrode
Clark Electrode, may also be refered as a polarographic electrode.
TRUE or FALSE
Calibration procedure is performed automatically every 30 minutes by the ABG machine ( it calibrate PH, PCO2, PO2)
TRUE
Two point calibration consist on:
A low and High concentration is used at both ends
What is calibration?
Is when the equipment is adjusted or corrected to match the control standars
What is Quality Control?
Testing must be performed on a regular basis to determine the accuaracy and precision of the equipment
TRUE or FALSE
Quality Control must be done every shift?
TRUE
Accuaracy is?
Refer to the mean value of several measurements
Precision is?
Refer to how consistently the same measurement will produce the same results
What are the quality control plotting
- In Conrol
- Trend
- Random Error
- Out of Control
What trend is this?
In control
This is:
Trend
this is ?
Random
