A randomized trial found that procedure order affected midazolam requirements without clearly improving overall comfort or satisfaction.
Order and insufflation were tested together
Two hundred adults were randomized across four combinations of upper-endoscopy-first or colonoscopy-first and carbon dioxide or air insufflation. Data were available for 186. All procedures used midazolam and fentanyl conscious sedation. Midazolam use was significantly lower in the upper-endoscopy-first groups.
A lower dose is one outcome
The study did not find significant differences in overall patient satisfaction or several comfort measures attributable to sequence. Carbon dioxide arms had less bloating and discomfort, a separate finding from the midazolam result. This distinction matters when interpreting claims that a change in workflow improves sedation quality: reduced exposure and better experience are not interchangeable. The trial examined selected patients and a specific sedation approach; it does not establish an individual safe dose or show that every patient benefits from the same sequence.
Source paper
Original analysis of the supplied journal article, identified as PMC7204791.
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