Doppler blood pressure measurement in pigs during anaesthesia |
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Authors: | Gabrielle C. Musk Renata S. Costa Jonathan Tuke |
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Affiliation: | 1. School of Veterinary and Life Sciences, Murdoch University, Australia;2. School of Mathematical Sciences, University of Adelaide, South Australia |
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Abstract: | To determine the accuracy of Doppler blood pressure measurement in anaesthetised pigs eight large white pigs (Sus scrofa) were anaesthetised with zolazepam and tiletamine as Zoletil 100 (4 mg/kg) and xylazine (2 mg/kg) by intramuscular injection followed by isoflurane in 100% oxygen. Blood pressure measurements were recorded using a Doppler probe on the radial artery and a catheter in the femoral artery connected to a transducer. The sample mean of the Doppler measurements were compared with the sample mean of the invasive systolic arterial blood pressure while accounting for the heart rate, end-tidal CO2 and temperature. The predicted error of the Doppler was greatest when pigs were hypotensive and normothermic: 11 mmHg (CI: 6–15). Doppler measurements should be interpreted with caution in anaesthetised pigs that are hypotensive and normothermic. |
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Keywords: | Pig Anaesthesia Blood pressure |
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