Purpose of Examination
- To monitor the content of oxygen and carbon dioxide in arterial blood to evaluate the gas exchange in the lungs.
- To evaluate the acid-base balance in vivo.
- To monitor the severity of disease progression as a reference for treatment.
- To help medical staff evaluate the effectiveness of respiratory therapy for patients.
Indications
Respiratory disorders, dysfunction of cardiovascular system, renal dysfunction, shock, etc.
Item
|
Normal values
|
Clinical significance
|
pH
|
7.35 ~ 7.45
|
Acid-base equilibrium in the blood
|
PaO2
|
80 ~ 100 mmHg
|
Oxygen levels in arterial blood
|
PaCO2
|
35 ~ 45 mmHg
|
Patients' ventilation capacity
|
HCO3
|
24 ± 4 mEq/L
|
Bicarbonate levels in the blood
|
BE
|
0 ± 2 mEq/L
|
Acid-base equilibrium
|
SaO2
|
97 ~ 98 %
|
Oxygen carrying capacity of heme
|
Comorbidity
- Causes of comorbidity: frequent extraction, improper puncture, or misoperation.
- Common comorbidities: hematoma, tissue damage, thrombosis, poor peripheral blood circulation, numbness, infection, etc.
- After a puncture, the patient should be assisted or his family members asked to apply pressure to the puncture site for at least 5 minutes to stop the bleeding and check for any comorbidity.