Diagnostic criteria for type II respiratory failure

For many patients with pneumothorax and asthma, they often encounter acute pulmonary edema, lung infection or pulmonary embolism in their lives. Problems with the arteries and qi and blood are not ruled out. The diagnosis of type II respiratory failure and related precautions have reasonable standards. They can be recovered and treated slowly through some simple and effective methods, so that they can recover faster.

It should be distinguished from tension pneumothorax and status asthmaticus, and attention should be paid to differentiating it from acute pulmonary edema, pulmonary infection, pulmonary embolism, acute respiratory distress syndrome and cerebrovascular accident.

Inspection method

Laboratory tests:

Arterial blood gas analysis was abnormal.

Other auxiliary examinations:

1. Pulmonary function tests show an increase or decrease in the ventilation-perfusion ratio.

2. Cerebral blood flow diagram shows increased cerebral blood flow.

complication

Complications include pulmonary encephalopathy, gastrointestinal bleeding, shock and metabolic acidosis.

Prognosis

Chronic respiratory failure recurs frequently and is often associated with a poor prognosis.

Pathogenesis

The main physiological function of the lungs is to carry out gas exchange, which mainly involves the body's intake of oxygen from outside the body through the lung tissue and the excretion of carbon dioxide produced after the body's metabolism through the lung tissue. The transport of gases within the body relies on blood circulation, and tissue cells absorb oxygen and expel carbon dioxide from the blood or tissue fluid environment. The whole process of breathing includes three interrelated links: ① External respiration, which refers to the gas exchange between the external environment and blood in the lungs.

It includes two processes: pulmonary ventilation (gas exchange between the lungs and the outside world) and pulmonary gas exchange (gas exchange between the alveoli and the blood). ②Transport of gases in the blood. ③Internal respiration refers to the gas exchange between blood or tissue fluid and tissues. The mechanism involved in respiratory failure is mainly external respiration, which includes pulmonary ventilation and pulmonary ventilation, which are described below.