Indirect oscillometric and direct blood pressure measurements in anesthetized and conscious neonatal foals |
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Authors: | Yvette S. Nout,DVM,,Kevin T.T. Corley,BSc,BVM& S,PhD,DACVIM,MRCVS,,Lydia L. Donaldson,VMD,PhD,DACVA, Martin O. Furr,DVM,PhD,DACVIM |
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Affiliation: | Marison duPont Scott Equine Medical Center, Virginia-Maryland Regional College of Veterinary Medicine, Leesburg, Virginia (Donaldson, Furr) The Ohio State University, Columbus, OH (Nout) Royal Veterinary College, Herts, UK (Corley); This study was funded by the Patricia Bonsall Stuart Research Fund, administered by the Virginia-Maryland Regional College of Veterinary Medicine, Blacksburg, VA. |
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Abstract: | Objective: To investigate the agreement between indirect oscillometric and direct blood pressure measurement in the equine neonate. Design: Prospective observational study. Setting: University Veterinary Teaching Hospital. Animals: Ten crossbred foals of 30–46 hours of age. Interventions: Six animals (Group 1) were anesthetized. Four animals (Group 2) were restrained on a mat. All animals were instrumented with a catheter in the greater metatarsal artery and an oscillometric blood pressure cuff over the coccygeal artery. Blood pressure was varied with dobutamine, phenylephrine, nitroprusside, and increased depth of anesthesia (Group 1) or dopamine (Group 2). Measurements and main results: Simultaneous direct and indirect blood pressure measurements were obtained from the greater metatarsal artery and the coccygeal artery, respectively. There was good agreement between the 2 methods for mean and diastolic blood pressures in both groups, but not for systolic pressure. The agreement was best in mean blood pressure of anesthetized foals (mean bias –1.07; limits of agreement – 9.39, 7.25 mmHg). Conclusions: Indirect oscillometry appears to be an acceptable method for measuring mean arterial blood pressure in both anesthetized and conscious neonatal foals, and may be a valid method of monitoring critically ill foals. |
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Keywords: | animals newborn arterial catheterization automated sphygmomanometry comparative study horses indirect blood pressure |
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