肺心病是老年人的常见病之一,随着气温的降低,其发病率日渐增多,每年的11月至次年的4月,为肺心病的高发季节。由于呼吸系统和外界直接沟通,很容易受微生物、有害气体和粉尘的侵袭,特别是外界刺激因子过强,人体抵抗力低下时,更易招致感染。反复的刺激或感染,会使气管、支气管黏膜充血、水肿,管 Pulmonary heart disease is one of the common diseases of the elderly, with the decrease of temperature, the incidence is increasing, every year from November to April next year, for the high incidence of pulmonary heart disease. As the respiratory system communicates directly with the outside world, it is easily affected by microorganisms, harmful gases and dusts, especially when the external stimuli are too strong and the human body’s immunity is low, so it is more likely to cause infection. Repeated stimulation or infection will make the trachea, bronchial mucosa congestion, edema, tube