Indirect mean arterial pressure in the anesthetized dog

Geddes, L. A.; Combs, William; Denton, William; Whistler, S J; Bourland, J. D.

doi:10.1152/ajpheart.1980.238.5.h664

Cited by 40 publications

(40 citation statements)

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“…Usually this factor varied between 0.9 and 1.0. This linear extrapolation is justified on the basis of studies by Geddes et al (2,3) and Latshaw et al (8).…”

Section: Human Subjectsmentioning

confidence: 99%

“…Referring to Figure 1, four measurements were made: [1] cuff pressure (S o ) where the oscillations suddenly increased during cuff deflation; [2] the amplitude (A s ) of cuff pressure oscillations for auscultatory systolic pressure; [3] the amplitude (A d ) of cuff pressure oscillations for auscultatory (Phase 5) diastolic pressure; [4] the maximal amplitude of cuff pressure oscillations (A m ). From the measured data, the value of S o ( cuff pressure for the sudden increase in cuff pressure oscillations) was compared with auscultatory systolic pressure (S K ).…”

Section: Human Subjectsmentioning

confidence: 99%

“…To the other (shaved) forelimb, a disposable pediatric blood-pressure cuff was applied. Every effort was made to assure that the cuff width was between 33% and 40% of the forelimb circumference, which provided the best correlation between indirect and direct pressure for this limb in the dog (3). If the cuff pressure for maximum oscillations did not coincide with true mean arterial pressure, a scaling factor (F) was used to correct the systolic and diastolic pressures for more accurate comparisons.…”

Section: Human Subjectsmentioning

confidence: 99%

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Characterization of the oscillometric method for measuring indirect blood pressure

Geddes

Voelz

Combs

et al. 1982

Annals of Biomedical Engineering

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293

162

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In this study, human subjects and dogs were used to determine the ability of the oscillometric method to indicate systolic and diastolic pressure. In the human studies, the auscultatory method was used as the reference. In the animal studies, directly recorded blood pressure was used as the reference. The ability of the sudden increase in cuff pressure oscillations during cuff deflation to indicate systolic pressure was examined and found to overestimate systolic pressure slightly in man, but more in animals. Systolic pressure was encountered when the cuff pressure oscillations were about one half of their maximum amplitude. However, in both man and animals the ratio was not constant; although the range was less in man than in animals. Diastolic pressure was encountered when cuff pressure oscillation amplitude was about 0.8 of the maximal amplitude. This ratio for diastolic pressure was not constant over a range of diastolic pressure. The range of variability was less for man than for the dog.

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“…Usually this factor varied between 0.9 and 1.0. This linear extrapolation is justified on the basis of studies by Geddes et al (2,3) and Latshaw et al (8).…”

Section: Human Subjectsmentioning

confidence: 99%

Section: Human Subjectsmentioning

confidence: 99%

Section: Human Subjectsmentioning

confidence: 99%

See 1 more Smart Citation

Characterization of the oscillometric method for measuring indirect blood pressure

Geddes

Voelz

Combs

et al. 1982

Annals of Biomedical Engineering

Self Cite

293

162

View full text Add to dashboard Cite

show abstract

“…However, recommendations for cuff sizes vary. One study determined optimum cuff width for indirect blood pressure measurements to be about one-fifth of the tail circumference (Latshaw et al 1979), while others recommended ratios of 0.35 (Muir et al 1983) and 0.25 (Geddes et al 1977), respectively. A recent study recommends a cuff with a ratio of 0.25 at the tail to provide the most accurate results when compared to invasive measurements (Tearney et al 2016).…”

Section: Discussionmentioning

confidence: 99%

Comparison of non-invasive and invasive blood pressure measurements in horses during anaesthesia using the oscillometric blood pressure monitor S/5 Datex Ohmeda

Fouché¹,

Auer²,

Iff³

2016

PHK

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Summary: The purpose of this study was to assess the performance of indirect blood pressure measurements with an oscillometric blood pressure monitor (S/5, Datex-Ohmeda) in anaesthetized horses. The study was conducted as a prospective experimental study. Seven adult horses, five geldings and two mares, were used in this study. The average age was 15 ± 8 years (mean ± SD) and the horses were weighing between 485 and 654 kg. Invasive and non-invasive blood pressure measurements were recorded simultaneously and a total of 263 values were analyzed. The number of measurements obtained in each horse depended on the anaesthesia time (104 -225 minutes). Bland and Altman analysis for repeated measurements was used for assessment of the data. Overall the most accurate measurement was achieved with mean arterial pressure (MAP) measurement with a bias of 5 mmHg compared to a bias of 7 mmHg in the systolic arterial pressure (SAP) and of 9 mmHg in the diastolic arterial pressure (DAP). The MAP proved to be the most precise in the low arterial blood pressure group (3 mmHg) followed by the medium arterial blood pressure group (5mmHg). These results show that non-invasive blood pressure measurements with Datex Ohmeda (S/5, Datex-Ohmeda, S/5™ Collect, Datex-Ohmeda) monitoring can be an adequate alternative to measure blood pressure in anaesthetized horses when invasive blood pressure measurement cannot be performed. Besides monitoring of anaesthesia, non-invasive blood pressure measurement can be very helpful in alert horses due to its non-stressful and non-invasive nature. Further comparable projects are required in awake patients and data collected in this study could serve as a basis for that.Keywords: horse, anaesthesia, blood pressure measurement, oscillometric blood pressure monitor, Datex Ohmeda Citation: Fouché N., Auer U., Iff I. (2016) Comparison of non-invasive and invasive blood pressure measurements in horses during anaesthesia using the oscillometric blood pressure monitor S/5 Datex Ohmeda. Pferdeheilkunde 32,[479][480][481][482][483][484]

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“…Blood pressure (mm/Hg) was measured by using automatic NIBP machine, mean arterial pressure was measured by indirect method (Geddes et al, 1980) using formula: MAP = DAP + (SAP -DAP)/3 (mm/Hg).…”

Section: Methodsmentioning

confidence: 99%

Effect of Epidural Ketamine in Combination with Opioids on Haemodyanamics and Electrocardiograph in Dogs

Ram¹,

Sharma²,

Anandmay³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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Indirect mean arterial pressure in the anesthetized dog

Cited by 40 publications

References 0 publications

Characterization of the oscillometric method for measuring indirect blood pressure

Characterization of the oscillometric method for measuring indirect blood pressure

Comparison of non-invasive and invasive blood pressure measurements in horses during anaesthesia using the oscillometric blood pressure monitor S/5 Datex Ohmeda

Effect of Epidural Ketamine in Combination with Opioids on Haemodyanamics and Electrocardiograph in Dogs

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