Sedation-risk-free colonoscopy for minimizing the burden of colorectal cancer screening

Table 1 Comparison of sedated and unsedated colonoscopy

	Sedated	Unsedated
Medication risks (hypotension, hypoxia, arrhythmia)	Very, very small	None
Success rate of cecal intubation	~ 90%	80% to 90%
Purge preparation	Mandatory	Mandatory
Escort	Mandatory	Not required
Driving immediately after colonoscopy	Not allowed	Allowed
Discomfort reduced by medication	Very likely	Not applicable
Remember discomfort	No	Yes
Remember discussion during and after colonoscopy	No	Yes
Need monitoring for 15 to 60 min after colonoscopy depending on type and dosage of sedation medications used	Yes	No
May require repeat with sedation	Not applicable	If examination is incomplete