Why do ventilators and oxygen generators need to match blood oxygen parameters?

Why do ventilators and oxygen generators need to match blood oxygen parameters?


A ventilator is a device that can replace or improve human breathing, increase pulmonary ventilation, improve respiratory function, and reduce respiratory work consumption. It is generally used for patients with pulmonary failure or airway obstruction who cannot breathe normally. The inhalation and exhalation function of the human body helps the patient to complete the breathing process of exhalation and inhalation.


The oxygen generator is a safe and convenient machine for extracting high-concentration pure oxygen. It is a pure physical oxygen generator, compresses and purifies the air to produce oxygen, and then purifies it and delivers it to the patient. It is suitable for respiratory system diseases, heart and brain diseases. For patients with vascular disease and altitude hypoxia, mainly to solve the symptoms of hypoxia.


It is well known that most of the deceased patients with Covid-19 pneumonia have multiple organ failure caused by sepsis, and the manifestation of multiple organ failure in the lungs is acute respiratory distress syndrome ARDS, the incidence rate of which is close to 100%. Therefore, the treatment of ARDS can be said to be the focus of supportive treatment for patients with Covid-19 pneumonia. If ARDS is not handled well, the patient may die soon. During ARDS treatment, if the patient’s oxygen saturation is still low with a nasal cannula, the doctor will use a ventilator to help the patient breathe, which is called mechanical ventilation. Mechanical ventilation is further divided into invasive assisted ventilation and non-invasive assisted ventilation. The difference between the two is intubation.


In fact, before the outbreak of the Covid-19 pneumonia, “oxygen therapy” was already an important adjuvant treatment for patients with respiratory and cardiovascular diseases. Oxygen therapy refers to the treatment of inhaling oxygen to increase blood oxygen levels and is suitable for all hypoxic patients. Among them, diseases of the respiratory system and cardiovascular system are the main diseases, especially in the treatment of chronic obstructive pulmonary disease (COPD), oxygen therapy has been used as an important adjuvant therapy in the family and other places.


Whether it is the treatment of ARDS or the treatment of COPD, both ventilators and oxygen concentrators are required. To determine whether it is necessary to use an external ventilator to assist the patient’s breathing, it is necessary to monitor the patient’s blood oxygen saturation during the entire treatment process to determine the effect of “oxygen therapy”.


Although oxygen inhalation is beneficial to the body, the harm of oxygen toxicity cannot be ignored. Oxygen toxicity refers to a disease manifested by pathological changes in the function and structure of certain systems or organs after the body inhales oxygen above a certain pressure for a certain period of time. Therefore, the oxygen inhalation time and oxygen concentration of the patient can be regulated by monitoring the blood oxygen saturation in real time.

Post time: Feb-10-2023