- pH.
- Partial pressure of oxygen (PaO2)
- Partial pressure of carbon dioxide (PaCO2)
- Bicarbonate (HCO3)
- Oxygen saturation (O2 Sat)
- Oxygen content (O2CT)
What are the component parts of an arterial blood gas quizlet?
Arterial blood gases include
blood pH, oxygen, carbon dioxide, and bicarbonate levels
. The anion gap is the difference between measured cations, sodium and potassium, and measured anions, chloride and bicarbonate.
What are the components of arterial blood gas?
- Partial pressure of oxygen (PaO2). …
- Partial pressure of carbon dioxide (PaCO2). …
- pH. …
- Bicarbonate (HCO3). …
- Oxygen content (O2CT) and oxygen saturation (O2Sat) values.
What are the four components of blood gasses?
| Test Components | Arterial blood gas pO2, pCO2, pH, bicarb., Tot. CO2, base excess | Venous blood gas pO2, pCO2, pH, bicarb., Tot. CO2, base excess. | Blood gas/lytes plus panel pO2, pCO2, pH, bicarb., Tot. CO2, base excess, Na, K, Cl, ICa, ICa @ pH 7.4, anion gap |
|---|
What is be in ABG?
Assessment of acid-base status depends on measurement of pH and partial pressure of carbon dioxide (pCO
2
) in a sample of arterial blood using electrodes housed in the blood gas analyzer, and two further calculated parameters, bicarbonate (HCO
3
-) concentration and
base excess
(BE), that are derived by calculation from …
What are the two most important blood gases?
Oxygen (O
2
) and carbon dioxide (CO
2
)
are the most important respiratory gases, and their partial pressures in arterial blood reflect the overall adequacy of gas exchange. Pao
2
is affected by age and altitude.
What is the normal range for blood gases?
The following are normal ranges for results of a blood gas test:
pH: 7.35–7.45
. partial pressure of oxygen (PaO2): 80–100 millimeters of mercury (mmHg) partial pressure of carbon dioxide: 35–45 mmHg.
What key characteristics are revealed in an arterial blood gas ABG test?
Arterial Blood Gas (ABG) is defined as: “
The measurement of the acidity and the levels of oxygen and carbon dioxide in the blood from an artery
.” ABG are tests which are used to check how well a patient’s respiratory efforts are able to move oxygen into the blood and remove carbon dioxide from the blood..
Which cause is associated with acidosis?
Acidosis is caused by
an overproduction of acid that builds up in the blood
or an excessive loss of bicarbonate from the blood (metabolic acidosis) or by a buildup of carbon dioxide in the blood that results from poor lung function or depressed breathing (respiratory acidosis).
What key characteristics are revealed in an arterial blood gas test?
An arterial blood gas is a blood test that is performed specifically on arterial blood, to
determine the concentrations of carbon dioxide, oxygen and bicarbonate, as well as the pH of the blood
.
What is pH in arterial blood gas?
pH. The pH measures hydrogen ions (H+) in blood. The pH of blood is usually
between 7.35 and 7.45
. A pH of less than 7.0 is called acid and a pH greater than 7.0 is called basic (alkaline).
What are two conditions that cause polycythemia?
- Hypoxia from long standing (chronic) lung disease and smoking are common causes of polycythemia. …
- Chronic carbon monoxide (CO) exposure can also be a risk factor for polycythemia.
What is PCO2 in blood gas?
The
partial pressure of carbon dioxide
(PCO2) is the measure of carbon dioxide within arterial or venous blood. It often serves as a marker of sufficient alveolar ventilation within the lungs. Generally, under normal physiologic conditions, the value of PCO2 ranges between 35 to 45 mmHg, or 4.7 to 6.0 kPa.
How do you interpret an ABG?
- Look at pH – < 7.40 – Acidosis; > 7.40 – Alkalosis.
- If pH indicates acidosis, then look at paCO
2
and HCO
3
–
- If paCO
2
is ↑, then it is primary respiratory acidosis. … - If paCO
2
↓ and HCO
3
–
is also ↓→ primary metabolic acidosis. … - If HCO
3
–
is ↓, then AG should be examined.
What happens if ABG is low?
A test result of low bicarbonate and low pH (less than 7.35) is a condition called metabolic acidosis. Common causes are:
kidney failure
.
severe diarrhea
.
How can you tell the difference between ABG and VBG?
In conclusion, the VBG is a useful, less painful, and more easily gathered test than ABG to asses for acidosis and hypercarbia. Multiple studies have shown that
pH correlates well between VBG
and ABG. As for PvCO2, using a cutoff of 45mmHg is very sensitive in determining whether there is arterial hypercarbia.
