Agreement between doppler and invasive blood pressure monitoring in anesthetized dogs weighing <5 kg

Martin J. Kennedy, Michele Barletta

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

The objectives of this study were to determine if Doppler (DOP) blood pressure measurements more closely estimate either invasive systolic or invasive mean arterial blood pressures (ISAP or IMAP, respectively) in small dogs under general anesthesia and to assess the ability of DOP to detect anesthesia-related hypotension in small dogs. Blood pressure measurements (n = 203) were obtained from 10 client-owned dogs. DOP, ISAP, and IMAP were recorded simultaneously, and the data were categorized into two groups: hypotensive (ISAP <90 mm Hg) and normotensive (ISAP ≥90 mm Hg and ≤160 mm Hg). DOP overestimated ISAP and IMAP in both the normotensive and hypotensive groups. The DOP was highly specific (97%) but poorly sensitive (56%) for detecting hypotension. The smallest bias was achieved when using DOP as an estimate of systolic arterial blood pressure in both normotensive and hypotensive dogs, suggesting that DOP measures systolic arterial blood pressure in dogs <5 kg. For dogs with hypotension, DOP met all of the performance criteria for noninvasive blood pressure monitors recommended by the American College of Veterinary Internal Medicine. DOP is an acceptably accurate and highly specific means of detecting hypotension in small dogs under general anesthesia.

Original languageEnglish (US)
Pages (from-to)300-305
Number of pages6
JournalJournal of the American Animal Hospital Association
Volume51
Issue number5
DOIs
StatePublished - Jan 1 2015

Keywords

  • ACVIM, American College of Veterinary Internal Medicine
  • DOP, Doppler
  • IBP, invasive blood pressure
  • IMAP, invasive mean arterial blood pressure
  • ISAP, invasive systolic arterial blood pressure
  • MAP, mean arterial blood pressure
  • NIBP, noninvasive blood pressure
  • SAP, systolic arterial blood pressure

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