title: [Observation of the change of blood pressure in 835 patients during extraction of teeth].
abstract: OBJECTIVE
  To observe the change of blood pressure during extraction of teeth.
  
  
  METHODS
  Patients without hypertension who needed extraction were randomly selected, tooth extraction was carried out. The blood pressure and the patient's response to operation were observed and recorded during the procedure.
  
  
  RESULTS
  The blood pressure in 825 patients increased significantly. The average increased blood pressure was 45/26 mmHg, 3 patients had arrhythmia, 5 patients had adverse reaction.
  
  
  CONCLUSIONS
  The patient's blood pressure must be fewer than 140/90 mmHg, before a difficult extraction of teeth.
authors.affiliation: Yangpu Dental Clinic of Shanghai Municipality, Shanghai 200090, China. yabing@shcei.com.cn
authors.forename: Quan-Lin
authors.initials: QL
authors.lastname: Xu
authors.forename: Yong
authors.initials: Y
authors.lastname: Ba
mesh_terms: D000328:Adult; D001794:Blood Pressure / Q000502:physiology*; D005260:Female; D006801:Humans; D007431:Intraoperative Complications / Q000517:prevention & control; D008297:Male; D008875:Middle Aged; D016343:Monitoring, Intraoperative; D014081:Tooth Extraction