Clinical Laboratory Chemistry: Chapter 13, Blood Gases Flashcards
What are the 4 major body buffer systems?
Hgb, phosphates, proteins, and bicarbonate
5 ways in which CO2 is carried in the blood:
Preanalytical sources of errors in blood gas analysis include:
Air in syringe, _______, speciment not well mixed, and test delays
What is the speciman of choice, syringe choice and area of draw for blood gas analysis?
Increased amount of carbon dioxide in blood is __________.
What is the most IMPORTANT extracellular buffer system?
Biocarbonate/carbonic acid system
What is the LARGEST buffer in the body?
After ABG draw, specimen should be placed in an ice slurry and should be read within _________ from draw
Specimens exposured to any air will cause _________ in pO2 and a ________ in pCO2, also an ___________ in pH
Speciman in a higher temp. glycolysis contributes to an _____pH and ___ pCO2.
At 7.4 the normal biocarbonate:carbonic acid ratio is
Normal pH range
Normal HCO3- range
Normal pCO2 range
pO2 normal range is
Arterial blood collected in a syringe but exposed to room air by introduction of an air bubble would cause __________ PO2____________PCO2 _______pH.
Use the following artirial blood gas results
pCO2= 55 mm Hg
HCO3= 23 mEq/L
What is the likely diagnosis of the patient?
Specimens for blood gas determination should be drawn into a syringe containing __________.
Toxic effects of carbon monoxide are caused by displacement of oxygen _______
Toxic effects of carbon monoxide would cause a __________ shift of the oxygen curve
What is the primary carrier of carbon dioxide?
Metabolic acidosis has a __________pH __________ HCO3 _____________PCO2
Respiratory Alkalosis has a __________pH, _______HCO3, __________PCO2
Blood pH above 7.45 is called
Blood pH below 7.35 is called
What is it called when the body tries to correct the problem by using the system that isn't causing the problem?
Compenstated respiratory acidosis shows a __________ pH, _________HCO3, __________PCO2
decrease of pH,
increase in PCO2
Increased amount of Carbon Dioxide in the blood
The form that CO2 is carried in the blood
Pressure exerted by gas, whether alone or mixed with other gases