在夜晚,老年人应注意以下一些容易发作的疾病,提前加以预防,免除因病发带来的痛苦与不便。1.哮喘病。哮喘病容易在夜间发作,而且以后半夜发作为多。有些哮喘病人白天无任何症状,一到凌晨4点左右就开始出现哮喘。这主要是因为呼吸道在后半夜时的反应性最高,夜间空气干燥,支气管的迷走神经兴奋性也高。哮喘患者夜间发作时呼吸困难、有喘鸣声、胸部发紧,患者不能平躺、被迫坐起。 At night, the elderly should pay attention to the following diseases that are prone to attack and prevent them in advance so as to avoid the pain and inconvenience caused by the disease. Asthma Asthma attacks easily at night, but after midnight attack as much. Some asthmatics do not have any symptoms during the day and asthma begins to develop around 4 am This is mainly due to the highest reactivity of the respiratory tract in the middle of the night, dry air at night, and high excitability of the vagus nerve in the bronchi. Asthma patients have dyspnea at night, wheezing, chest tightness, patients unable to lie flat and forced to sit up.