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除导致呼吸衰竭的原发疾病症状外,其临床表现主要是缺氧和二氧化碳潴留所引起的多个脏器功能紊乱。主要表现如下: 1.呼吸困难呼吸困难时病人主观感到吸入空气不足,客观上有呼吸节律、幅度改变,呼吸频率加快、鼻翼扇动、轴助呼吸肌活动增强,如点头或提肩样呼吸等。 2.紫绀是缺氧的典型表现、当动脉血氧饱和度低于80％或动脉血氧分压低于50mmHg时,可在口唇及甲床部位呈现紫绀。但缺氧不一定都有紫绀,因为紫绀和血液中血红蛋白量多少有关,也受皮肤色素及心功能状态的影响,这些情况
In addition to the primary symptoms of respiratory failure, the clinical manifestations are mainly organ dysfunction caused by hypoxia and carbon dioxide retention. Mainly as follows: 1. Difficulty breathing Difficulty breathing patients subjective feeling of inhaled air, there is objective respiratory rhythm, amplitude changes, respiratory rate, nasal flap fan, shaft-assisted respiratory muscle activity increased, such as nodding or shoulder-shoulder breathing. 2. Cyanosis is a typical manifestation of hypoxia, when arterial oxygen saturation is less than 80% or arterial oxygen partial pressure less than 50mmHg, cyanosis can appear in the lips and nail bed. But hypoxia does not necessarily have cyanosis, cyanosis and the amount of hemoglobin in the blood, but also by the skin pigment and cardiac function status, these conditions