Whether respiratory failure can be cured depends on the causes of the respiratory failure and the severity of the condition. Respiratory failure can potentially be cured. For example, acute left heart failure can lead to pulmonary congestion and subsequent respiratory failure. This condition primarily manifests as a decrease in oxygen tension, and by conducting a blood gas analysis, if the oxygen tension is found to be less than 60 mmHg, it can be diagnosed as respiratory failure. However, with symptomatic treatments such as vasodilation and diuretics, once the left heart failure is alleviated, the respiratory failure will also improve. On the other hand, for diseases intrinsic to the lungs, such as chronic obstructive pulmonary disease or severe pulmonary infections, these chronic conditions cannot be completely cured. The symptoms of respiratory failure can only be managed with medication or ventilators.