Background: Dexmedetomidine has advantages during colonoscopy as it allows the patient to cooperate during\nthe procedure. Few studies examined the dexmedetomidine-remifentanil combination. This study was to evaluate\nthe effects of different doses of the dexmedetomidine-remifentanil combination in colonoscopy.\nMethods: This was a prospective trial carried out at the Fourth Hospital of Hebei Medical University between 02/\n2018 and 10/2018. .....................
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