Fig. 1From: Doxapram alleviates low SpO2 induced by the combination of propofol and fentanyl during painless gastrointestinal endoscopyVariation of SpO2, MAP, and HR between group D and group S at different time points (n = 55 per group). Note: data are presented as mean ± standard deviation (SD). * represents significant differences at P < 0.05Back to article page