Agreement of high definition oscillometry with direct arterial blood pressure measurement at different blood pressure ranges in horses under general anaesthesia |
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Authors: | Karsten Feige Sabine BR Kästner |
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Institution: | 1. Clinic for Horses, University of Veterinary Medicine Hannover Foundation, Hannover, Germany;2. Small Animal Clinic, University of Veterinary Medicine Hannover Foundation, Hannover, Germany |
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Abstract: | ObjectiveTo determine the agreement of high definition oscillometry (HDO) with direct arterial blood pressure measurements in normotensive, hypotensive and hypertensive horses during general anaesthesia.Study designExperimental study.AnimalsSeven healthy warmblood horses, aged 3–11 years, weighing 470–565 kg.MethodsMeasurements from a HDO device with the cuff placed around the base of the tail were compared with pressures measured invasively from the facial artery. High blood pressures were induced by intravenous (IV) administration of dobutamine (5 μg kg?1 minute?1) over ten minutes followed by norepinephrine (0.1 mg kg?1 IV) and low pressures by increasing the inspired fraction of isoflurane and administration of nitroglycerine (0.05 mg kg?1 IV). For analysis three pressure levels were determined: high (MAP>110 mmHg), normal (60 mmHg |
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Keywords: | arterial blood pressure cardiovascular equine oscillometry |
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