Lying down chest tightness and shortness of breath may be caused by physiological factors such as obesity, but also may be caused by respiratory diseases, cardiovascular diseases and other disease factors.
1. Physiological factors: such as obesity, will increase the burden on the heart and lungs, too much fat to limit the thorax and diaphragm movement, so that the lungs appear ventilation dysfunction, so there is chest tightness, shortness of breath; In addition, daytime overwork, emotional stress, anxiety, etc., the night lying down to sleep will also appear chest tightness, shortness of breath.
2. Disease factors:
(1) respiratory diseases: such as bronchial asthma, the vagus nerve excitation at night when lying down to sleep, easy to make the bronchial spasm, airway reactivity increases, thus triggering asthma, chest tightness, shortness of breath symptoms.
(2) cardiovascular disease: such as cardiac insufficiency, lying down after the increase in the volume of return blood, the heart load increases, the pulmonary venous pressure rises, which leads to pulmonary stasis, chest tightness, shortness of breath and other discomforts. It should be noted that cardiac insufficiency may occur in the presence of underlying cardiac pathologies such as coronary artery disease, hypertension and cardiomyopathy.
(3) Sleep apnea syndrome: such patients can have airway closure when lying down, leading to intermittent respiratory pause, making the patient hypoxic and thus chest tightness and shortness of breath.
There are many other reasons for chest tightness and shortness of breath after lying down, such as air circulation, cardiac neurosis, emphysema, airway occupying lesions, etc. If there is no significant improvement by adjusting the mood and taking proper rest, it is recommended to consult a doctor in time to improve the relevant examinations and treatments with the help of a doctor.