Comparison between invasive blood pressure and a non-invasive blood pressure monitor in anesthetized sheep

Daniel Almeida, Michele Barletta, Lindsey Mathews, Lynelle Graham, Jane Quandt

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)582-586
Number of pages5
JournalResearch in veterinary science
Volume97
Issue number3
DOIs
StatePublished - Dec 1 2014

Keywords

  • Anesthesia
  • Non-invasive blood pressure
  • Sheep

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