title: Comparison between invasive blood pressure and a non-invasive blood pressure monitor in anesthetized sheep.
abstract: Monitoring blood pressure under general anesthesia in animals is important to prevent hypotension and poor tissue perfusion. Thirteen sheep were enrolled to evaluate the accuracy of the petMAP, a portable non-invasive blood pressure (NIBP) monitor. Animals were anesthetized with midazolam, fentanyl, ketamine, propofol and maintained with isoflurane in oxygen for ovariectomy. Invasive and non-invasive (petMAP) blood pressure measurements were recorded simultaneously every 5 minutes. Agreement between IBP and NIBP was assessed by evaluation of bias and 95% limits of agreement (LOA) using the Bland-Altman method and correlation coefficient. None of the measurements met the criteria for good agreement between invasive and non-invasive readings established by the Association for the Advancement of Medical Instrumentation. Systolic blood pressure readings obtained at the left thoracic limb site and mean blood pressure at the right pelvic limb site met the bias and LOA criteria established by the American College of Veterinary Internal Medicine.
authors.affiliation: Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN, USA.
authors.forename: Daniel
authors.initials: D
authors.lastname: Almeida
authors.affiliation: Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, GA, USA. Electronic address: mbarlett@uga.edu.
authors.forename: Michele
authors.initials: M
authors.lastname: Barletta
authors.affiliation: Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN, USA.
authors.forename: Lindsey
authors.initials: L
authors.lastname: Mathews
authors.affiliation: Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN, USA.
authors.forename: Lynelle
authors.initials: L
authors.lastname: Graham
authors.affiliation: Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA.
authors.forename: Jane
authors.initials: J
authors.lastname: Quandt
mesh_terms: D000768:Anesthesia, General / Q000662:veterinary; D000818:Animals; D001794:Blood Pressure / Q000502:physiology*; D001795:Blood Pressure Determination / Q000379:methods / Q000662:veterinary*; D015924:Blood Pressure Monitors / Q000662:veterinary*; D005260:Female; D008991:Monitoring, Physiologic / Q000379:methods / Q000662:veterinary*; D010052:Ovariectomy / Q000662:veterinary; D012756:Sheep; D034561:Sheep, Domestic / Q000502:physiology*
keywords: Anesthesia; Non-invasive blood pressure; Sheep