Dyspnea when lying down may be caused by heart disease, respiratory disease and physiologic reasons.
1. Heart disease, such as coronary atherosclerotic heart disease, rheumatic heart disease caused by cardiac insufficiency, when lying down with an increase in the volume of return blood, which can lead to varying degrees of dyspnea, to treat the primary disease, to control the cause of the disease and triggers.
2. Respiratory diseases, such as bronchial asthma, chronic obstructive pulmonary disease, hindering gas exhalation or inhalation, especially at night when the vagus nerve is excited, it will make the airway constriction and aggravate dyspnea. It is important to administer oxygen and use drugs such as albuterol for treatment.
In addition, lung tumors can also cause dyspnea when lying down when the airway is compressed during position change, and pleural effusion can also cause dyspnea in lying down position, which needs to be identified.
3. Physiological causes, such as excessive obesity, can lead to excessive elevation of the diaphragm when lying down, reducing the volume of the chest cavity, limiting the degree of lung contraction and diastole, resulting in dyspnea. To appropriate fitness, regular diet, reduce obesity.
It should be noted that when lying flat dyspnea, it is necessary to visit the hospital in time, under the guidance of the doctor for examination and treatment.