Mistry F P, Abraham P, Bhatia S J
Department of Gastroenterology, KEM Hospital, Bombay.
J Assoc Physicians India. 1992 Aug;40(8):524-7.
We continuously monitored the arterial oxygen saturation (SaO2) and pulse rate by pulse oximetry in 46 patients undergoing upper gastrointestinal endoscopy for diagnosis (21 cases) or variceal sclerotherapy (25). No premedication or prior topical anaesthesia was used. Significant hypoxaemia (percent drop in SaO2 > 2) occurred in 24 (52%) patients during the procedure; in 16 of these it occurred during introduction of the endoscope. Twenty seven (59%) patients had hypoxaemia during recovery, 25 of these immediately after withdrawal of the endoscope. All these episodes were short-lived and were probably due to gagging; basal levels were reached within 1 to 5 min. Tachycardia (> 100 beats/min) occurred in 41 (89%) patients. Sclerotherapy and history of smoking did not affect the incidence and magnitude of hypoxaemia and tachycardia. Transient cardio-respiratory changes occur during and immediately after endoscopy, but these appear to be clinically benign.
我们通过脉搏血氧饱和度仪持续监测了46例接受上消化道内镜检查以进行诊断（21例）或静脉曲张硬化治疗（25例）患者的动脉血氧饱和度（SaO2）和脉搏率。未使用术前用药或局部麻醉。24例（52%）患者在检查过程中出现明显低氧血症（SaO2下降百分比>2）；其中16例在插入内镜时出现。27例（59%）患者在恢复过程中出现低氧血症，其中25例在拔出内镜后立即出现。所有这些发作均为短暂性，可能是由于 gagging 所致；在1至5分钟内达到基础水平。41例（89%）患者出现心动过速（>100次/分钟）。硬化治疗和吸烟史不影响低氧血症和心动过速的发生率及严重程度。内镜检查期间及检查后立即会出现短暂的心肺变化，但这些变化在临床上似乎是良性的。
