title: Risk factors for postoperative complications following oral surgery.
abstract: OBJECTIVE
  The objective of this study was to clarify significant risk factors for postoperative complications in the oral cavity in patients who underwent oral surgery, excluding those with oral cancer.
  
  
  METHODS
  This study reviewed the records of 324 patients who underwent mildly to moderately invasive oral surgery (e.g., impacted tooth extraction, cyst excision, fixation of mandibular and maxillary fractures, osteotomy, resection of a benign tumor, sinus lifting, bone grafting, removal of a sialolith, among others) under general anesthesia or intravenous sedation from 2012 to 2014 at the Department of Oral and Maxillofacial Reconstructive Surgery, Hiroshima University Hospital.
  
  
  RESULTS
  Univariate analysis showed a statistical relationship between postoperative complications (i.e., surgical site infection, anastomotic leak) and diabetes (p=0.033), preoperative serum albumin level (p=0.009), and operation duration (p=0.0093). Furthermore, preoperative serum albumin level (<4.0 g/dL) and operation time (≥120 minutes) were found to be independent factors affecting postoperative complications in multiple logistic regression analysis results (odds ratio 3.82, p=0.0074; odds ratio 2.83, p=0.0086, respectively).
  
  
  CONCLUSIONS
  Our results indicate that a low level of albumin in serum and prolonged operation duration are important risk factors for postoperative complications occurring in the oral cavity following oral surgery.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Institute of Biomedical and Health Sciences, Hiroshima University, JP.
authors.forename: Hideo
authors.initials: H
authors.lastname: Shigeishi
authors.affiliation: Department of Oral and Maxillofacial Surgery, Institute of Biomedical and Health Sciences, Hiroshima University, JP.
authors.forename: Kouji
authors.initials: K
authors.lastname: Ohta
authors.affiliation: Department of Oral and Maxillofacial Surgery, Institute of Biomedical and Health Sciences, Hiroshima University, JP.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Takechi
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D016063:Blood Loss, Surgical; D002648:Child; D002675:Child, Preschool; D048909:Diabetes Complications; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009059:Mouth Diseases / Q000209:etiology*; D061646:Operative Time; D019647:Oral Surgical Procedures / Q000009:adverse effects*; D011183:Postoperative Complications / Q000209:etiology*; D012044:Regression Analysis; D012189:Retrospective Studies; D012307:Risk Factors; D012709:Serum Albumin / Q000032:analysis; D012737:Sex Factors; D055815:Young Adult
chemical_list: D012709:Serum Albumin