Bolus remifentanil for chest drain removal in ICU: a randomized double-blind comparison of three modes of analgesia in post-cardiac surgical patients.

Purpose: We compared 1 versus 0.5 microg/kg bolus remifentanil versus placebo in alleviating pain due to chest drain removal. Effects on sedation, respiratory rate (RR), oxygen saturation, heart rate (HR) and blood pressure were also evaluated.