• Keely A T Wilson, Anthea L Raisis, Eleanor A Drynan, Guy D Lester, and Giselle L Hosgood.
• Department of Veterinary Anaesthesia and Analgesia, College of Veterinary Medicine, School of Veterinary and Life sciences, Murdoch University Veterinary Hospital, Murdoch, Australia. Electronic address: keelyamelia@gmail.com.
• Vet Anaesth Analg. 2018 May 1; 45 (3): 338-344.

ObjectiveTo determine agreement between invasive blood pressures measured in three peripheral arteries in anaesthetized horses undergoing elective surgery.Study DesignProspective balanced incomplete block design.AnimalsA total of 18 client-owned horses.MethodsInvasive blood pressure (IBP) was measured simultaneously in one of the following three combinations: 1) transverse facial and facial artery; 2) transverse facial and metatarsal artery; and 3) facial and metatarsal artery. The agreement in blood pressure measured for each combination was performed in six horses. At each sample time, systolic (SAP), mean (MAP) and diastolic (DAP) arterial pressures were measured concurrently in each artery, and the mean of three consecutive measurements was recorded. The position of horse, heart rate and use of dobutamine were also recorded. Bland-Altman analysis was used to assess agreement between sites.ResultsA total of 54 paired measurements were obtained, with 18 paired measurements from each combination. All paired measurements showed poor and haphazard (nonsystematic) agreement. The widest limit of agreement was 51 mmHg for SAP measured in the facial artery and metatarsal artery, with a bias of -11 mmHg. The smallest limit of agreement was 16 mmHg for MAP measured in the transverse facial and metatarsal artery, with a bias of 1 mmHg.Conclusions And Clinical RelevanceThere was poor and haphazard agreement for SAP, MAP and DAP measured in each pair of peripheral arteries in this study. These results show that blood pressure measured in different peripheral arteries cannot be used interchangeably. This has implications for studies that use IBP as an outcome variable and studies determining agreement between noninvasive blood pressure and IBP measurements in horses under general anaesthesia.Copyright © 2018 Association of Veterinary Anaesthetists and American College of Veterinary Anesthesia and Analgesia. Published by Elsevier Ltd. All rights reserved.

23 keywords...

hide…