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Agreement between noninvasive oscillometric and invasive blood pressure measurements in isoflurane-anesthetized guinea pigs (Cavia porcellus). 2021

Samanta Waxman, and Santiago Fuensalida, and Fernanda Sánchez, and Indiana Zárate, and Emmanuel Turnes, and Casilda Rodríguez, and Pablo Otero
Department of Anesthesiology, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Buenos Aires, Argentina; National Scientific and Technical Research Council (Consejo Nacional de Investigaciones Científicas y Técnicas de Argentina, CONICET), Buenos Aires, Argentina. Electronic address: maribarbola_2000@yahoo.com.

OBJECTIVE To assess the agreement between an oscillometric device and invasive blood pressure (IBP) measurements in anesthetized healthy adult guinea pigs. METHODS Prospective experimental study. METHODS A total of eight adult Hartley guinea pigs. METHODS All animals were anesthetized; a carotid artery was surgically exposed and catheterized for IBP measurements. A size 1 cuff placed on the right thoracic limb was connected to an oscillometric device for noninvasive blood pressure (NIBP) assessment. Concurrent pairs of systolic (SAP), diastolic (DAP) and mean (MAP) arterial pressures were recorded simultaneously with both methods every 3 minutes for 30 minutes. Agreement between IBP and NIBP measurements was determined using the Bland-Altman method, considering the recommended standards for the validation of NIBP measurement devices proposed by the American College of Veterinary Internal Medicine (ACVIM). RESULTS The bias and the 95% limits of agreement were: -14 (-31 to 3) mmHg, -2 (-14 to 10) mmHg and -1 (-13 to 11) mmHg for SAP, DAP and MAP, respectively. CONCLUSIONS The oscillometric device used in this study to measure NIBP did not meet ACVIM criteria for validation. It showed good agreement for DAP and MAP but not for SAP measurements. Considering the small size of these animals and the resulting difficulty in performing percutaneous arterial catheterization, this device might be a useful tool to assess MAP and DAP during anesthetic procedures in adult guinea pigs.

UI MeSH Term Description Entries
D007530 Isoflurane A stable, non-explosive inhalation anesthetic, relatively free from significant side effects.
D011446 Prospective Studies Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group. Prospective Study,Studies, Prospective,Study, Prospective
D001794 Blood Pressure PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS. Systolic Pressure,Diastolic Pressure,Pulse Pressure,Pressure, Blood,Pressure, Diastolic,Pressure, Pulse,Pressure, Systolic,Pressures, Systolic
D001795 Blood Pressure Determination Techniques used for measuring BLOOD PRESSURE. Blood Pressure Determinations,Determination, Blood Pressure
D006168 Guinea Pigs A common name used for the genus Cavia. The most common species is Cavia porcellus which is the domesticated guinea pig used for pets and biomedical research. Cavia,Cavia porcellus,Guinea Pig,Pig, Guinea,Pigs, Guinea
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D015924 Blood Pressure Monitors Devices for continuously measuring and displaying the arterial blood pressure. Monitors, Blood Pressure,Sphygmomanometers, Continuous,Blood Pressure Monitor,Continuous Sphygmomanometer,Continuous Sphygmomanometers,Monitor, Blood Pressure,Pressure Monitor, Blood,Pressure Monitors, Blood,Sphygmomanometer, Continuous
D062186 Arterial Pressure The blood pressure in the ARTERIES. It is commonly measured with a SPHYGMOMANOMETER on the upper arm which represents the arterial pressure in the BRACHIAL ARTERY. Aortic Blood Pressure,Aortic Pressure,Aortic Pulse Pressure,Aortic Tension,Arterial Blood Pressure,Arterial Tension,Blood Pressure, Aortic,Blood Pressure, Arterial,Mean Aortic Pressure,Mean Arterial Pressure,Aortic Blood Pressures,Aortic Pressure, Mean,Aortic Pressures,Aortic Pressures, Mean,Aortic Pulse Pressures,Aortic Tensions,Arterial Blood Pressures,Arterial Pressure, Mean,Arterial Pressures,Arterial Pressures, Mean,Arterial Tensions,Blood Pressures, Aortic,Blood Pressures, Arterial,Mean Aortic Pressures,Mean Arterial Pressures,Pressure, Aortic,Pressure, Aortic Blood,Pressure, Aortic Pulse,Pressure, Arterial,Pressure, Arterial Blood,Pressure, Mean Aortic,Pressure, Mean Arterial,Pressures, Aortic,Pressures, Aortic Blood,Pressures, Aortic Pulse,Pressures, Arterial,Pressures, Arterial Blood,Pressures, Mean Aortic,Pressures, Mean Arterial,Pulse Pressure, Aortic,Pulse Pressures, Aortic,Tension, Aortic,Tension, Arterial,Tensions, Aortic,Tensions, Arterial

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