title: [Analysis of risk factors for bleeding after thyroid surgery].
abstract: OBJECTIVE
  To identify risk factors for bleeding after thyroid surgery, and discuss the potential relevance between the bleeding timing and sources.
  
  
  METHODS
  A total of 2568 cases that underwent thyroid operation from June 2012 to June 2013 were collected and analysed retrospectively the risk factors for postoperative bleeding by Cox and the potential relevance between the bleeding timing and sources.
  
  
  RESULTS
  Among 2568 patients, 40 patients occurred postoperative bleeding Indentified risk factors were extent resection (P=0.0435) and surgeon (P=0.0071). Thyroid bed and strap muscles/sternocleidomastoid were the most common sources of bleeding after surgery within 6 hours; while thyroid bed was the most common source of bleeding after surgery between 6 and 8 h; wound errhysis was the most common source during 8-24 h after the operation; thyroid bed and strap muscles/sternocleidomastoid were the most common sources within 24 h after thgroid surgery.
  
  
  CONCLUSIONS
  Bleeding after thyroid surgery is a rare but potentially life-threatening complication, and the extent of resection and the surgeon are risk factors. Thyroid bed and strap muscles/sternocleidomastoid are the most common sources of bleeding after surgery within 24 hours.
authors.affiliation: Department of Otorhinolaryngology Head and Neck Surgery, Provincial People's Hospital of Shaanxi, Xi'an 710068, China.
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Qiu
authors.affiliation: Department of Head and Neck Surgery, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing 100021, China.
authors.forename: Zhengjiang
authors.initials: Z
authors.lastname: Li
authors.affiliation: Department of Head and Neck Surgery, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing 100021, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Liu
authors.affiliation: Department of Head and Neck Surgery, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing 100021, China.
authors.forename: Changming
authors.initials: C
authors.lastname: An
authors.affiliation: Department of Head and Neck Surgery, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing 100021, China.
authors.forename: Yulin
authors.initials: Y
authors.lastname: Yin
authors.affiliation: Department of Head and Neck Surgery, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing 100021, China.
authors.forename: Pingzhang
authors.initials: P
authors.lastname: Tang
authors.affiliation: Department of Head and Neck Surgery, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing 100021, China.
authors.forename: Zhengang
authors.initials: Z
authors.lastname: Xu
mesh_terms: D006801:Humans; D019106:Postoperative Hemorrhage; D012189:Retrospective Studies; D012307:Risk Factors; D013961:Thyroid Gland / Q000601:surgery*; D013965:Thyroidectomy / Q000009:adverse effects*