Agreement between invasive blood pressure measured centrally and peripherally in anaesthetized horses

Wilson, Keely A T; Raisis, Anthea L.; Drynan, Eleanor A.; Mosing, Martina; Lester, Guy D.; Hayman, J.; Hosgood, Giselle

doi:10.1016/j.vaa.2018.02.006

Cited by 8 publications

(3 citation statements)

References 15 publications

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“…This prospective, experimental study was performed after completion of two separate studies in anaesthetised horses. The first evaluated the agreement between invasive blood pressure measurements in the carotid artery and two peripheral arteries over a large range of blood pressures . The second evaluated the effects of salbutamol on ventilation and perfusion.…”

Section: Methodsmentioning

confidence: 99%

Monitoring of tidal ventilation by electrical impedance tomography in anaesthetised horses

Mosing

Waldmann

Raisis

et al. 2018

Equine Veterinary Journal

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Section: Methodsmentioning

confidence: 99%

Monitoring of tidal ventilation by electrical impedance tomography in anaesthetised horses

Mosing

Waldmann

Raisis

et al. 2018

Equine Veterinary Journal

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“…To the authors' knowledge, this is the first report of CO and other hemodynamic variables measured with UDCO and ECHO in mature, anesthetized alpacas during different blood Phenylephrine was chosen to be used as a means to increase blood pressure for evaluation of UDCO and ECHO performance in this study because its use for manipulation of blood pressure for evaluation of cardiovascular measurement devices in other species [18,19,[23][24][25].…”

Section: Discussionmentioning

confidence: 99%

Ultrasound dilution cardiac output and echocardiography findings in anesthetized mature alpacas (Vicugna pacos) during normotension, hypotension and hypertension

et al. 2023

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Alpacas (Vicugna pacos) have physiologic adaptations to live at high altitude. These adaptations may result in unexpected responses to changes in cardiac performance and blood pressure during general anesthesia. There are few studies evaluating cardiovascular variables in anesthetized alpacas. The purpose of this study was to report cardiovascular performance in anesthetized mature alpacas during normotension, hypotension, and hypertension using ultrasound dilution and echocardiography. Six adult alpacas, 3 females and 3 castrated males, weighing 62.6 to 88.7 kg were anesthetized and maintained with isoflurane and placed in right lateral recumbency. Each alpaca underwent ultrasound dilution and echocardiography measurements during three cardiovascular phases, normotension, hypotension via increased isoflurane concentration, and hypertension via phenylephrine infusion. Variables were analyzed with a Friedman test and a post hoc Dunn’s test when significant. A p < 0.05 was used for significance. Cardiac output, cardiac index, systemic vascular resistance, stroke volume, total ejection fraction, left ventricular internal diameter during diastole, and total stroke volume indexed to body weight were greater for hypertension compared to hypotension. Total ejection fraction, stroke volume, and left ventricular ejection time were greater for hypertions compared to normotension. There was no difference between ultrasound dilution and echocardiography determined cardiac output measurements within each cardiovascular phase. Phenylephrine appeared to have increased ventricular performance and/or increased preload in anesthetized, mature alpacas. For detecting change in cardiovascular status in anesthetized alpacas, ultrasound dilution and echocardiography may be useful.

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“…The pressure transducer was placed at the level of the point of the shoulder as an estimate for the location of the right atrium and connected to a monitor (Invasive blood pressure machine & My LabTM 30VETGold, Esaote S.p.a., Florence, Italy) with recent factory calibration. The system was zeroed to atmospheric pressure and the invasive blood pressure (IBP) was monitored continuously throughout the study [ 20 ].…”

Section: Methodsmentioning

confidence: 99%

Equine echocardiography: Can dobutamine infusion correct alterations due to sedation with alpha-2 agonists?

Vitale

Vezzosi²,

Franco³

et al. 2022

PLoS ONE

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For the echocardiographic examination horses should not be sedated unless absolutely necessary because this alters cardiac dimensions and indices of function. However, some horses do not tolerate the echocardiographic procedure and require sedation to conduct the examination safely and obtain good quality images. The objective of this study was to evaluate whether the concurrent infusion of dobutamine in horses sedated with romifidine counteracts the cardiovascular changes observed with sedation alone. Twelve healthy untrained Standardbred mares were used. Three echocardiographic examinations were performed on the same day for each subject: a) without any treatment under resting conditions (WT); b) under sedation with romifidine administered intravenously (RT); c) under sedation with romifidine and concurrent intravenous infusion with dobutamine (RDT). A three-hour washout period was observed between each examination and the order of the examinations was randomly decided by rolling a dice. The measurements on the images recorded were performed offline at the end of the study protocol and at this point the operator was blinded to the horse and treatment administered. Left ventricular internal diameter (LVID) in diastole, left ventricular free wall (LVFW) in systole, and fractional shortening (FS) were higher in the WT group compared with the other two groups. No differences in the other M-mode and B-mode values were observed. A continuous rate infusion of dobutamine did not counteract the alterations caused by sedation and led to similar echocardiographic measurements to those obtained after romifidine administration.

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Agreement between invasive blood pressure measured centrally and peripherally in anaesthetized horses

Cited by 8 publications

References 15 publications

Monitoring of tidal ventilation by electrical impedance tomography in anaesthetised horses

Monitoring of tidal ventilation by electrical impedance tomography in anaesthetised horses

Ultrasound dilution cardiac output and echocardiography findings in anesthetized mature alpacas (Vicugna pacos) during normotension, hypotension and hypertension

Equine echocardiography: Can dobutamine infusion correct alterations due to sedation with alpha-2 agonists?

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