title: Trigeminocardiac reflex during Le Fort I osteotomy: a case-crossover study.
abstract: OBJECTIVE
  The present study aimed to assess the occurrence of trigeminocardiac reflex (TCR) during Le Fort I osteotomies.
  
  
  METHODS
  This case-crossover study included 25 Le Fort I osteotomy candidates without systemically compromising conditions. Mean arterial blood pressure and pulse rate values were recorded before downfracture (DF) (MABP1, PR1), during DF (MABP2, PR2), and after DF (MABP3, PR3). The data were analyzed using repeated measure ANOVA tests (alpha = 0.05).
  
  
  RESULTS
  PR1 and PR3 were significantly higher than PR2 (P < .001). MABP2 value was significantly lower compared with MABP1 and MABP3 values (P < .001). PR2 and MABP2 showed a mean decrease of 6.5% and 9.7% compared with PR1 and MABP1, respectively.
  
  
  CONCLUSIONS
  Different values have been suggested for TCR. Considering the limitations, the present study may suggest a revision of the values or descriptions for TCR, at least in maxillofacial Le Fort I osteotomy.
authors.affiliation: Department of Oral and Maxillofacial Surgery, School of Dental Medicine, Azad University of Tehran, Tehran, Iran.
authors.forename: Behnam
authors.initials: B
authors.lastname: Bohluli
authors.forename: Mohammad
authors.initials: M
authors.lastname: Bayat
authors.forename: Farzin
authors.initials: F
authors.lastname: Sarkarat
authors.forename: Behnaz
authors.initials: B
authors.lastname: Moradi
authors.forename: Mohammad-Hassan Seif
authors.initials: MH
authors.lastname: Tabrizi
authors.forename: Pooyan
authors.initials: P
authors.lastname: Sadr-Eshkevari
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D018592:Cross-Over Studies; D005260:Female; D006339:Heart Rate; D006801:Humans; D007431:Intraoperative Complications; D008297:Male; D019340:Osteotomy, Le Fort; D012018:Reflex / Q000502:physiology*; D018709:Statistics, Nonparametric; D014276:Trigeminal Nerve / Q000503:physiopathology*; D055815:Young Adult