PHS 4904 ABG (Arterial Blood Gas)/Nova Southeastern University.

Laboratory Tests
This section provides detailed information on a wide range of laboratory tests relevant
to women's medicine

A rapid reference



ABG (Arterial Blood Gas)
Arterial blood gas analysis typically measures: Normal Adult Arterial Values*

 pH (acidity) pH 7.35–7.45
pCO2 35–45 torr 4.5–6.0
 pCO2 (partial pressure of carbon kPa
dioxide) pO2 >79 torr >10.5
kPa
 pO2 (partial pressure of oxygen) CO2 23-30
mmol/L
 CO2 (carbon dioxide content) Base ± 3 mEq/L ±2
excess/deficit mmol/L
 Base excess (the loss of buffer base to SO2 >94%
neutralize acid)

And may include:

 Oxygen saturation Normal Adult Venous Values*

pH 7.31–7.41
These measurements are often used to evaluate
pCO2 41–51 torr 5.5–6.8
oxygenation of the tissues and pulmonary kPa
function. pO2 30–40 torr 4.0–5.3
kPa
CO2 23–30
mmol/L
pH is a measurement of the acidity of the blood, Base ± 3 mEq/L ±2
reflecting the number of hydrogen ions present. excess/deficit mmol/L
SO2 75%
Lower numbers mean more acidity; higher
numbers mean more alkalinity.

pH is elevated (more alkaline, higher pH)
with: Blood Gas Abbreviations

BE Base excess (positive
number) or base deficit


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, (negative number)
 Hyperventilation HCO3 Bicarbonate
H2CO3 Carbonic acid
 Anxiety, pain PO2 Partial pressure of oxygen
PaO2 Partial pressure of oxygen in
 Anemia arterial blood
PvO2 Partial pressure of oxygen in
 Shock venous blood
PCO2 Partial pressure of carbon
 Some degrees of pulmonary disease dioxide
PaCO2 Partial pressure of carbon
 Some degrees of congestive heart failure dioxide in arterial blood
PvCO2 Partial pressure of carbon
 Myocardial infarction dioxide in venous blood
SO2 Oxygen saturation
 Hypokalemia (decreased potassium)
SaO2 Oxygen saturation in
arterial blood
 Gastric suctioning or vomiting
SvO2 Oxygen saturation in venous
blood
 Antacid administration
TCO2 Total carbon dioxide content
 Aspirin intoxication

pH is decreased (more acid, lower pH) with:

 Strenuous physical exercise

 Obesity

 Starvation

 Diarrhea

 Ventilatory failure

 More severe degrees of pulmonary
disease

 More severe degrees of congestive heart
failure

 Pulmonary edema




This study source was downloaded by 100000850299972 from CourseHero.com on 08-03-2023 01:06:08 GMT -05:00


https://www.coursehero.com/file/19889781/ABG-Arterial-Blood-Gas/