Hypotensive anaesthesia and blood loss in orthognathic surgery: a clinical study.
OBJECTIVE
To find out whether hypotensive anaesthesia minimized blood loss during orthognathic surgery.


METHODS
A prospective randomized clinical study.


METHODS
53 consecutive patients, 15-33 years old, who were to have orthognathic operations were admitted to the study. They were randomly allocated to either normotensive or hypotensive anaesthesia.


RESULTS
Median (range) blood loss/operation (ml) under hypotensive anaesthesia was 200 (90-400)ml and under normotensive anaesthesia was 350 (130-1575)ml (P= 0.01), and those for maxillary segmental osteotomy under hypotensive anaesthesia were 85 (40-240)ml and, under normotensive anaesthesia, 175 (100-190)ml (P= 0.05).


CONCLUSIONS
There was pronounced reduction in blood loss during orthognathic operations done under hypotensive anaesthesia compared with those done under normotensive anaesthesia.
Praveen
K
K
Department of Oral and Maxillofacial Surgery, Saveetha Dental College and Hospitals, Madras, India.
Narayanan
V
V
Muthusekhar
M R
MR
Baig
M F
MF
D000293:Adolescent; D000328:Adult; D000766:Anesthesia, Dental / Q000379:methods*; D016063:Blood Loss, Surgical / Q000517:prevention & control*; D005260:Female; D006801:Humans; D007023:Hypotension, Controlled; D008297:Male; D019647:Oral Surgical Procedures; D011446:Prospective Studies