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Arterial blood gas analysis 動脈血液氣體分析

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Arterial blood gas analysis 動脈血液氣體分析

2024/12/18

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.
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