What causes dyspnea

summary

Palpitations, dyspnea are more common in life, in addition to the symptoms of fatigue during work, some patients will also appear at night. This change is changeable, and is often seen in cardiogenic pulmonary edema caused by left ventricular dysfunction. If the patient has a serious history of heart disease, he has mixed dyspnea, obvious in supine position and at night. Severe anemia can cause shortness of breath due to decreased red blood cells and insufficient blood oxygen, especially after activities, which brings great physical and mental harm to people. Here is a brief introduction to the specific situation of dyspnea.

What causes dyspnea

First, dyspnea is an important symptom of respiratory insufficiency. Subjectively, the patient felt lack of air, objectively manifested as hard breathing, severe nasal flapping, cyanosis, sitting breathing, auxiliary respiratory muscles involved in respiratory activities, and there may be abnormal respiratory rate, depth and rhythm. At present, it is generally believed that dyspnea is mainly caused by the need for ventilation exceeding the ventilation capacity of respiratory organs.

Second, acidosis caused by various reasons can increase carbon dioxide in blood and decrease pH, stimulate peripheral chemoreceptors or directly excite respiratory center and increase respiratory ventilation, which shows deep and large dyspnea; when respiratory inhibitors such as morphine and barbiturates are poisoned, they can also inhibit respiratory center and make breathing shallow and slow.

Third: severe brain diseases such as encephalitis, cerebrovascular accident, brain tumor directly affect the respiratory center, abnormal respiratory rhythm, leading to dyspnea; myasthenia gravis crisis causes respiratory muscle paralysis, leading to serious dyspnea; in addition, hysteria can also have dyspnea attack, patients in this regard should pay attention to.

matters needing attention

If the disease is serious, it should be diagnosed and treated as soon as possible. It can be determined only by combining the examination of cardiopulmonary function and blood routine, and by combining the examination of blood oxygen content when necessary. Go to the hospital for ECG examination to confirm the cause. It's better to go to the hospital for ECG examination in the form of emergency in the evening,