Many people do not have a thorough understanding of blood gas tests. In fact, this type of test carries significant meaning. Through this test, we can understand whether there is an imbalance in the acid-base balance of the human body, as well as whether there is a lack of oxygen in the body. This method of testing is relatively simple and also has a good examination effect on respiratory function and various trace elements in the blood. Let's briefly understand this aspect.

1. What is Blood Gas Analysis?

Blood gas analysis mainly includes the detection of blood gas solubility concentration and body fluid acidity and alkalinity. The main detection indicators include arterial blood oxygen partial pressure (PO2), which is the main reference indicator reflecting individual respiratory function. Respiratory function failure or obstructive symptoms will show varying degrees of decline. Clinically, the need for oxygen therapy can be judged by observing the changes in PO2. The normal reference range for this indicator is 60-90mmHg. Blood carbon dioxide partial pressure (PCO2) is also commonly used as a reference indicator for reflecting individual lung respiratory function, with a normal reference range of 35-45mmHg. Blood acid-base value (pH value) reflects whether there is an imbalance in the acid-base balance of the body by detecting the concentration of hydrogen ions in the blood. The normal reference range for this indicator is 7.35-7.45.

2. How to Perform Blood Gas Analysis?

Blood gas analysis is a commonly used detection method in respiratory medicine, mainly aimed at measuring the ventilation and gas exchange functions of the respiratory system. Especially when clinically presenting with hypoxemia, hypercapnia, electrolyte imbalance, and acid-base imbalance, it can be used as a reference for detection. Clinically, blood gas analyzers are used to measure the oxygen and carbon dioxide content in arterial blood and the pH value of the blood. Measurements are made by collecting blood from arteries or capillaries. Elevated or reduced carbon dioxide content and elevated or reduced oxygen content in the blood can be measured to identify the presence of the above-mentioned pathological changes. Clinically, it is mainly used for the clarification of diseases, such as respiratory distress syndrome caused by various reasons, persistent status of bronchial asthma, acute exacerbation of chronic bronchitis, and diffuse pulmonary interstitial fibrosis with dyspnea caused by various reasons.

3. Normal Values and Clinical Significance of Blood Gas Analysis?

Blood gas analysis is of great clinical significance and is a method used to determine whether there is an imbalance in acid-base balance, as well as the presence and degree of hypoxia in the human body. The pH value represents the actual state of blood acidity and alkalinity, reflecting the indicator of H concentration. A pH value greater than 7.45 indicates alkalosis. The normal reference range for blood indicators is PO2: 60-90mmHg, PCO2: 35-45mmHg, with a pH value of 7.35-7.45.