title: Transient hemodynamic change and accuracy of arterial blood pressure-based cardiac output.
abstract: BACKGROUND
  The purpose of this study was to determine the effects of transient arterial blood pressure change on the accuracy of the FloTrac™/Vigileo™ monitor (Edwards Lifesciences, Irvine, CA).
  
  
  METHODS
  We compared stroke volume determined with the FloTrac/Vigileo with Doppler during anesthetic induction in 20 patients undergoing abdominal aortic reconstruction.
  
  
  RESULTS
  The difference between the FloTrac measurements of stroke volume and the Doppler measurements of stroke volume was -7.5 ± 20.5 mL (mean ± SD) before induction, 0.3 ± 14.9 before laryngoscopy, 17.5 ± 26.9 during laryngoscopy, 20.5 ± 27.6, and -4.5 ± 16.4 mL 3 minutes after endotracheal tube placement.
  
  
  CONCLUSIONS
  The FloTrac/Vigileo measured stroke volume with reasonable accuracy during transient hypotension but overestimated stroke volume during transient hypertension.
authors.affiliation: Department of Anesthesiology, Keio University, Tokyo, Japan. ykotake@med.toho-u.ac.jp
authors.forename: Yoshifumi
authors.initials: Y
authors.lastname: Kotake
authors.forename: Takashige
authors.initials: T
authors.lastname: Yamada
authors.forename: Hiromasa
authors.initials: H
authors.lastname: Nagata
authors.forename: Junzo
authors.initials: J
authors.lastname: Takeda
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Shimizu
mesh_terms: D000368:Aged; D000758:Anesthesia; D001012:Aorta, Abdominal / Q000601:surgery; D001794:Blood Pressure / Q000502:physiology*; D002302:Cardiac Output / Q000502:physiology*; D004452:Echocardiography; D005260:Female; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D007442:Intubation, Intratracheal; D007828:Laryngoscopy; D008297:Male; D016343:Monitoring, Intraoperative / Q000379:methods*; D015203:Reproducibility of Results; D012984:Software; D013318:Stroke Volume / Q000502:physiology; D014656:Vascular Surgical Procedures