肺心病急性发作的诱因以感冒、受凉流行性感冒为最多,约占诱因的85％左右;且呼吸道感染往往是肺心病导致呼吸衰竭和心力衰竭的主要因素,重症感染还可以引起感染性休克。当呼吸道的感染受到控制后,支气管粘膜水肿、痉挛和通气障碍会有所缓解,缺氧和二氧化碳潴留能有所改善,肺动脉高压、心率增快、心率不 The cause of acute episodes of pulmonary heart disease is cold and cold influenza, accounting for about 85% of the inducement; respiratory infection is often the main factor of pulmonary heart disease leading to respiratory failure and heart failure, severe infection can also cause septic shock. Bronchial mucosal edema, spasms, and ventilatory disturbances were relieved when respiratory infections were controlled, hypoxia and carbon dioxide retention improved, pulmonary hypertension, heart rate increased, heart rate not increased