Association between mean arterial pressure and sublingual microcirculation during major non-cardiac surgery: post-hoc analysis of a prospective cohort.

In patients having elective major non-cardiac surgery with general anesthesia, sublingual microcirculation is well maintained when MAP ranges between 65 and 120 mmHg. It remains possible that sublingual perfusion will be a useful marker of tissue perfusion when MAP is lower than 65 mmHg.