Blood gas analysis results often look at the indicators are acid-base level, carbon dioxide partial pressure, oxygen partial pressure, alkali residual value and so on. 1. Acid-base level: the average value is 7.40, acidosis is acidic if the acid-base level is less than 7.35, and alkalosis is alkalosis if the acid-base level is more than 7.45. 2. Carbon dioxide partial pressure: carbon dioxide partial pressure is greater than 45mmHg for alveolar hyperventilation, seen in respiratory acidosis, less than 35mmHg for alveolar hyperventilation, seen in respiratory alkalosis. 3. Oxygen partial pressure: normal value is 80-100mmHg, less than 60mmHg is respiratory failure. 4. Alkali residual value: the normal range of alkali residual value is ±3, if more than +3 can be seen in metabolic alkalosis, less than -3 can be seen in metabolic acidosis. Blood gas analysis results are complex and should be interpreted by a medical professional. When problems are detected, the doctor will also take positive action.