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目的观察无痛胃镜检查中SpO2下降的原因,探讨应对对策。方法观察637例无痛胃镜检查者中197例血氧饱和度<95%的患者呼吸频率、幅度的变化以及气道分泌物、舌根后坠,呼吸道感染等因素变化。结果麻醉药物引起的呼吸抑制、呼吸道分泌物、以及舌根后坠是缺氧症的主要原因,体质虚弱、呼吸道感染,慢性阻塞性肺病、患有呼吸暂停综合征是其危险因素。
Objective To observe the causes of SpO2 drop in painless gastroscopy and to find out the countermeasures. Methods The changes of respiratory rate and amplitude of 197 patients with blood oxygen saturation <95% in 637 cases with painless gastroscopy were observed. The changes of airway secretions, tongue root fall, respiratory tract infection and other factors were observed. Respiratory depression, respiratory secretions caused by narcotic drugs, and tongue base fall are the main causes of hypoxia. Physical weakness, respiratory tract infection, chronic obstructive pulmonary disease and apnea syndrome are the risk factors.