呼吸困难:为患者主观上感到空气不足,客观上表现为呼吸费力。严重时可出现鼻翼扇动、发绀、张口呼吸、辅助呼吸肌参与呼吸活动、并可有呼吸频率、深度或节律的异常。引起呼吸困难的原因很多,如:呼趿系统疾病、循环系统疾病、神经精神系统疾病、血液变化、代谢异常以及一些能增加腹压、疼痛、发烧等疾病均可引起呼吸困难、但在临 Breathing difficulties: subjectively feel the lack of air for the patient, the objective performance of the respiratory effort. In severe cases, nasal flaps may occur, cyanosis, mouth breathing, breathing muscles to assist in respiratory activity, and may have respiratory rate, depth or rhythm abnormalities. Cause breathing difficulties for many reasons, such as: respiratory system disease, circulatory diseases, neuropsychiatric diseases, blood changes, metabolic disorders and some can increase abdominal pressure, pain, fever and other diseases can cause breathing difficulties,