What diseases are associated with expiratory dyspnea

The happiest thing in life is to have a healthy body. Many people have experienced symptoms such as dyspnea in life. This symptom always makes people feel particularly uncomfortable, but there are many reasons for dyspnea. Only after we understand the cause and diagnose the disease, can we effectively relieve this symptom. Let's learn about the diseases that cause expiratory dyspnea.

What diseases are associated with expiratory dyspnea?

Pulmonary dyspnea

It is caused by respiratory organ diseases and mainly manifests in the following three forms:

1) Inspiratory dyspnea: manifested by wheezing, and depression of the sternum, supraclavicular fossa, and intercostal spaces during inspiration - the three-depression sign. It is common in laryngeal and tracheal stenosis, such as inflammation, edema, foreign bodies and tumors.

2) Expiratory dyspnea: prolonged expiratory phase accompanied by wheezing, seen in bronchial asthma and obstructive pulmonary disease.

3) Mixed dyspnea: seen in pneumonia, pulmonary fibrosis, large pleural effusion, pneumothorax, etc.

Cardiac dyspnea

Common in cardiogenic pulmonary edema caused by left heart failure, its clinical features are:

1) The patient has a history of severe heart disease.

2) Mixed dyspnea, more obvious in supine position and at night.

3) Medium and small wet gong sounds may be heard at the bottom of the lungs and vary with body position.

4) X-ray examination: abnormal changes in the cardiac shadow; congestion in the hilum of the lung and its vicinity or signs of pulmonary edema.

Toxic breathing difficulties

Acidosis caused by various reasons can increase carbon dioxide in the blood and decrease pH, stimulate peripheral chemoreceptors or directly excite the respiratory center, increase respiratory ventilation, and manifest as deep and severe dyspnea. Poisoning with respiratory depressants such as morphine and barbiturates can also inhibit the respiratory center, causing shallow and slow breathing.

Hematogenous dyspnea

Severe anemia can cause shortness of breath due to a decrease in red blood cells and lack of blood oxygen, especially after activity. In case of massive hemorrhage or shock, ischemia and a drop in blood pressure stimulate the respiratory center and cause breathing difficulties.

Neuropsychiatric and myopathic dyspnea

Severe brain diseases such as encephalitis, cerebrovascular accident, brain tumors, etc. directly affect the respiratory center, causing abnormal respiratory rhythm and leading to dyspnea; myasthenia gravis crisis causes respiratory muscle paralysis, leading to severe dyspnea; in addition, hysteria can also cause dyspnea attacks, which are characterized by significantly fast and shallow breathing. Respiratory alkali poisoning is often accompanied by tetany.

After understanding the diseases that cause expiratory dyspnea, we know that dyspnea is generally caused by diseases such as bronchitis and asthma. In fact, if we can maintain good living habits in normal times, we can alleviate this symptom. We must pay attention to a balanced diet, exercise more often, and enhance the body's immunity to reduce illness.