Propofol sedation during endoscopic treatment for early gastric cancer compared to midazolam

Table 2 Relationship between sedation and endoscopic gastric treatment

Ref.	Year	Propofol	Midazolam	Combination	Petizine/pentazocine	Fentanyl	Anesthesiologist present
Sohara et al[14]	2013	●			●
Park et al[15]	2013			●		●	●
Schumacher et al[16]	2012			●	NA
Takano et al[17]	2011			●	●
Lee et al[18]	2011	●	●		NA
Nonaka et al[19]	2010			●	NA
Hata et al[20]	2009	●			●		●
Gotoda et al[21]	2009		●		●
Kiriyama et al[22]	2009		●		●
Imagawa et al[23]	2008	●			●
von Renteln et al[24]	2008			●	NA
Kondo et al[25]	2004		●		●

About drug names (propofol/midazolam/combination/general anesthesia/pentazocine/fentanyl), “●” means that the drug were "used". And about the line of Anestheologist, “●” means that anesthesiologists "managed" sedation. Combination: Propofol and midazolam; NA: Not applicable.