title: Intraoperative assessment of maxillary perfusion during Le Fort I osteotomy.
abstract: Intraoperative maxillary blood flow was measured using laser Doppler flowmetry (LDF) in two groups of patients undergoing orthognathic surgery. Group 1 (n = 14) consisted of patients undergoing Le Fort I osteotomy and group 2 (n = 8) consisted of patients undergoing isolated mandibular osteotomies. In group 1, the mean gingival blood flow (GBF) decreased significantly over time during the course of the operation from 29.5 mL/min/100 g of tissue to 13.2 mL/min/100 g of tissue (P = .0001). The mean GBF did not change significantly over time in group 2 (P = .39). The results of this study demonstrate that 1) LDF may be used to measure intraoperative GBF during Le Fort I osteotomy with an acceptable level of variability, and 2) maxillary GBF decreased significantly over time during Le Fort I osteotomy procedures.
authors.affiliation: Emory University School of Medicine, Atlanta, GA.
authors.forename: T B
authors.initials: TB
authors.lastname: Dodson
authors.forename: M C
authors.initials: MC
authors.lastname: Neuenschwander
authors.forename: R A
authors.initials: RA
authors.lastname: Bays
mesh_terms: D000328:Adult; D016063:Blood Loss, Surgical; D001794:Blood Pressure; D005260:Female; D005881:Gingiva / Q000098:blood supply*; D006801:Humans; D017078:Laser-Doppler Flowmetry; D008297:Male; D008334:Mandible / Q000601:surgery; D008437:Maxilla / Q000098:blood supply* / Q000601:surgery*; D008833:Microcirculation; D016343:Monitoring, Intraoperative / Q000295:instrumentation* / Q000379:methods; D010100:Oxygen / Q000097:blood; D011446:Prospective Studies; D011674:Pulse; D012039:Regional Blood Flow; D012044:Regression Analysis
chemical_list: D010100:Oxygen