Ask questions about respiratory failure, which is usually due to .

Respiratory failure is a clinical syndrome in which pulmonary ventilation and/or ventilation dysfunction is severely impaired due to various causes, so that effective gas exchange cannot be carried out, resulting in hypoxia with (or without) carbon dioxide retention, thus causing a series of physiological function and metabolic disorders. Respiratory failure (referred to as respiratory failure) occurs when the partial pressure of oxygen in arterial blood (PAO2) is lower than 8 kPa (60 mmHg) or accompanied by a partial pressure of carbon dioxide (PAC2) when the partial pressure of oxygen in arterial blood is lower than 8 kPa (60 mmHg) or accompanied by a higher partial pressure of carbon dioxide (PAC2) after breathing room air at rest, and excluding intracardiac anatomical shunt and decreased cardiac output. It is a dysfunctional state, not a disease, and can be caused by lung disease or can be a complication of various diseases.

In recent years, some scholars have proposed that the classification of respiratory failure can be divided into:

1. Pump failure: that is, respiratory failure caused by insufficient respiratory drive (respiratory movement center) or limited respiratory movement (peripheral nerve paralysis, respiratory muscle fatigue, thoracic deformity) is called pump failure;

2. Lung failure: Respiratory failure caused by airway obstruction, lung tissue lesions and pulmonary vascular lesions is called pulmonary failure.

It should be processed on. According to the severity of respiratory insufficiency, respiratory failure can be divided into oxygenation failure and ventilatory failure, such as pulmonary interstitial disease, pneumonia, etc. ARDS predominantly presents with oxygenation failure, while chronic obstructive pulmonary disease (COPD) is a combination of both.

In the case of inhaled bronchodilators, the measured arterial oxygen partial pressure is less than 60mmHg, with or without carbon dioxide partial pressure greater than 50mmHg, it is called respiratory failure, and severe respiratory failure requires long-term oxygen inhalation!

a.Internal respiratory dysfunction.

b.External respiratory dysfunction (correct answer).

c.Disorders of oxygen transport and blood transport.

d.Dioxo-called carbon emission cautiously answers the wide chain Huineng obstacle.

e.Respiratory lesions cause a lack of oxygen in the body.

a.Consequences of severe external respiratory dysfunction on Leung's.

b.Consequences of severe internal respiratory dysfunction.

c.Internal search and dispersion, external breathing work leakage bridge can be the consequence of serious obstacles.

d.The consequence of the inability of the blood to carry oxygen.

e.The consequence of the inability of tissue cells to utilize oxygen.

Correct Answer: a

Please take a closer look!

In respiratory failure, the lowest concentration of inspired oxygen is an oxygen saturation of less than 75%. Arterial blood analysis in respiratory failure: PAO2 less than 60 mmHg, with or without PACO2 greater than 50 mmHg.

It is better for ordinary people to have an oxygen saturation above 95, but there are also special ones, such as lung disease, altitude sickness, etc. If it is below 90 for a long time, it should be in a state of hypoxia. However, it should be determined according to the patient's condition and other special circumstances, if the patient is now recommended to be sent to a regular comprehensive examination at home, such as already following the doctor's advice.

If it is a young person, when the SPO2 measured non-invasively at the peripheral vascular end is less than 96%, it should be paid attention to! The elderly have low SPO2 due to peripheral vascular obstruction due to various reasons, which does not indicate the blood oxygen status of the whole body. The doctor will take a blood sample for testing.

Normal arterial oxygen saturation is about 95 97% and mixed venous oxygen saturation is about 75%. The normal oxygen content of the human body is about 90%. The higher the oxygen content in the blood, the better the person's metabolism.

Of course, high blood oxygen content is not a good phenomenon, the blood oxygen in the human body has a certain saturation, too low will cause insufficient oxygen supply to the body.

a.Internal respiratory dysfunction.

b.Severe external respiratory dysfunction with low or elevated PAO2.

c.Blood carries a deficit in sales, and oxygen transport is impaired.

d.Second, the air trap carbon oxide emission dysfunction.

e.Tissue oxygen use disorders.

Correct answer: Severe external respiratory dysfunction with low or elevated PAO2.