Hypotensive anaesthesia and blood loss in orthognathic surgery.

OBJECTIVE

This trial aimed to determine whether hypotensive anaesthesia reduces blood loss during orthognathic surgery.

DESIGN

Randomised trial.

INTERVENTION

Subjects were allocated to hypotensive (24 patients) or normotensive (29 patients) groups, assigned by sealed envelope, before undergoing standard orthognathic procedure.

OUTCOME MEASURE

Median blood loss was measured.

RESULTS

A significant reduction in blood loss was seen with hypotensive anaesthesia.

CONCLUSIONS

There was pronounced reduction in blood loss during orthognathic procedures carried out under hypotensive anaesthesia.