人在流鼻血时第一反应是仰头,但这种做法并不正确。流鼻血时的仰头姿势,会使血液由于重力原因顺着鼻道向后流到咽喉部,如将其咽入胃内,就会刺激胃肠黏膜,产生胃部不适乃至呕吐。此外,鼻腔内血液积量过多时,有可能由鼻泪管回流到眼,出现眼角出血;当咽喉血量过多、过急时,还容易呛入气管及肺内,造成呼吸道梗阻。 The first reaction in nosebleeds is upward, but this practice is not correct. When nosebleed up posture, blood will be due to gravity along the nasal passages backward flow to the throat, such as swallowing it into the stomach, it will stimulate the gastrointestinal mucosa, resulting in stomach upset and vomiting. In addition, when the nasal blood volume is too much, it is possible to return to the eye by the nasolacrimal duct, eye corner bleeding; when the throat too much blood, too anxious, it is easy to choke into the trachea and lung, causing airway obstruction.