title: Hemodynamic changes during inhalation 50% nitrous oxide in dental extraction on essential hypertensive patients.
abstract: OBJECTIVE
  To study the effects of cardiovascular function in dental extraction on hypertensive patients by inhalation 50% nitrous oxide.
  
  
  METHODS
  The 30 hypertensive patients were randomly allocated into two groups: A group inhalation the 50% nitrous oxide and oxygen, B group inhalation the air and O(2). To measured the HR, BP, and SpO(2) in dental extraction.
  
  
  RESULTS
  In a group the changes of blood pressure and heart rate are more smoother than B group. Two groups were significant in HR, BP and SpO(2) (P < 0.01).
  
  
  CONCLUSIONS
  Inhalation with 50% nitrous oxide can keep the stability of cardiovascular system and it is a valid method in dental extraction on hypertensive patients.
authors.affiliation: Department of Anaesthesia, College of Stomatology, The Fourth Military Medical University, Xi'an 710032, China.
authors.forename: Guoliang
authors.initials: G
authors.lastname: Zhang
authors.forename: Zhenxun
authors.initials: Z
authors.lastname: Xue
authors.forename: Lixian
authors.initials: L
authors.lastname: Xu
authors.forename: Yun
authors.initials: Y
authors.lastname: Ju
mesh_terms: D000280:Administration, Inhalation; D000368:Aged; D018685:Anesthetics, Inhalation / Q000008:administration & dosage / Q000494:pharmacology*; D001794:Blood Pressure / Q000187:drug effects; D005260:Female; D006339:Heart Rate / Q000187:drug effects; D006439:Hemodynamics / Q000187:drug effects*; D006801:Humans; D006973:Hypertension / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D009609:Nitrous Oxide / Q000008:administration & dosage / Q000494:pharmacology*; D010100:Oxygen / Q000097:blood; D010313:Partial Pressure; D013997:Time Factors; D014081:Tooth Extraction
chemical_list: D018685:Anesthetics, Inhalation; D009609:Nitrous Oxide; D010100:Oxygen