Arterial blood gas analysis 動脈血液氣體分析
2026/10/14
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.
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Item
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Normal values
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Clinical significance
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pH
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7.35 ~ 7.45
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Acid-base equilibrium in the blood
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PaO2
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80 ~ 100 mmHg
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Oxygen levels in arterial blood
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PaCO2
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35 ~ 45 mmHg
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Patients' ventilation capacity
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HCO3
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24 ± 4 mEq/L
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Bicarbonate levels in the blood
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BE
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0 ± 2 mEq/L
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Acid-base equilibrium
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SaO2
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97 ~ 98 %
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Oxygen carrying capacity of heme
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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.
- Singh, V., Khatana, S., & Gupta, P. (2013). Blood gas analysis for bedside diagnosis. National journal of maxillofacial surgery, 4(2), 136–141. https://doi.org/10.4103/0975-5950.127641
製作單位：胸腔科
編碼：HE-T2001-E
本衛教內容僅供參考，不能取代專業醫師診斷
本衛教內容僅供參考，不能取代專業醫師診斷