咯血是指喉部以下的呼吸道或肺血管破裂,血液随咳嗽由口腔咯出,咯血量每次在300-500ml以上者称为大咯血。大咯血对病人是一种以急性焦虑为主要特点的心理反应。强烈的心理应激可引起一系列不良后果。如交感神经系统机能亢进,心输出量增加,不利于出血。精力和体力过量消 Hemoptysis refers to the throat below the respiratory or pulmonary vascular rupture, blood cough from the bursts of cough, hemoptysis each time in more than 300-500ml known as massive hemoptysis. Hemoptysis on the patient is a psychological reaction characterized by acute anxiety. Strong psychological stress can cause a series of adverse consequences. Sympathetic nervous system such as hyperthyroidism, cardiac output increases, is not conducive to bleeding. Excessive energy and physical elimination