Accuracy of an oscillometric blood pressure monitor during phenylephrine-induced hypertension in dogs

McMurphy, Rose M.; Stoll, Melissa R; McCubrey, Raymond O.

doi:10.2460/ajvr.67.9.1541

Cited by 39 publications

(63 citation statements)

References 13 publications

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“…To reduce stress, we paid particular attention to restraining the lambs gently for at least 5 min before taking the blood pressure measurement. In general, the indirect oscillometric measurement of mean arterial blood pressure has been shown to agree closely with direct arterial pressure measurements during both normotension and hypertension in dogs [35,36], and we confirmed this agreement in our own experiments on anesthetized sheep. Direct measurement is generally considered to be more suitable for detecting subtle differences and could have resulted in lower standard deviations and a more accurate determination of blood pressure.…”

Section: Discussionsupporting

confidence: 85%

No juvenile arterial hypertension in sheep multiples despite reduced nephron numbers

Mühle

Amann

et al. 2010

Pediatr Nephrol

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Low birth weight is associated with an increased risk of metabolic dysfunction and arterial hypertension in later life. Because of their reduced birth weight twins have been used repeatedly as a natural model to investigate prenatal programming of hypertension. To reveal an early impact of lower nephron endowment on blood pressure, we performed a longitudinal study on lambs from single, twin and triplet pregnancies. The lambs were studied from birth until adulthood, including regular blood analyses, measurements of body weight and blood pressure and post-mortem estimation of glomerular numbers. Relative weight differences between multiples and singletons at birth were -28% for twins and -44% for triplets, respectively. Some lambs showed rapid catch-up growth. Total nephron number of twins and triplets was reduced by 21 and 37% with respect to that of singletons (p < 0.01). However, multiples did not show increased blood pressure within the time frame of this study. No gender-specific effect was observed. Plasma concentrations of creatinine, urea, electrolytes or osmolality also did not differ. Our data indicate that the previously reported postnatal blood pressure differences between sheep multiples and singletons are a time-limited phenomenon. During infancy and adolescence, a reduced nephron number in sheep multiples is neither associated with increased blood pressure nor reflected by plasma parameters.

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Section: Discussionsupporting

confidence: 85%

No juvenile arterial hypertension in sheep multiples despite reduced nephron numbers

Mühle

Amann

et al. 2010

Pediatr Nephrol

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“…Cuff site variably affects BP measurement in different species, with no differences reported between forelimb and hind limb cuff placement in dogs (McMurphy et al, 2006), whereas significant differences were found between different locations in marmosets (Mietsch and Einspanier, 2015), rabbits (Ypsilantis et al, 2005) and cats (Binns et al, 1995). Similar to the studies in cats and rabbits, cuff site influences accuracy of BP measurement in ferrets, with hind limb measurements displaying higher bias, wider limits of agreement and lower correlation coefficients than forelimb and tail measurements.…”

Section: Discussionsupporting

confidence: 53%

Non-invasive blood pressure measurement in ferrets ( Mustela putorius furo ) using high definition oscillometry

Zeeland

Wilde

Bosman

et al. 2017

The Veterinary Journal

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A B S T R A C TThis study was conducted to validate the use of high definition oscillometry (HDO) for non-invasive blood pressure (NIBP) measurements in ferrets and to establish reference ranges for NIBP in minimally sedated, healthy, young adult ferrets (<4 years of age). The bias, limits of agreement and correlation for HDO compared to direct arterial blood pressure (DABP) measurement were established in 14 anaesthetised ferrets. Measurements were performed at the forelimb, hind limb and tail under hypo-(<110 mmHg), normo-(110-170 mmHg) and hypertensive (>170 mmHg) conditions. Although HDO correlated well with DABP (r > 0.90), it showed significant proportional bias, whereby HDO generally underestimated DABP with hyper-and normotensive conditions, and overestimated DABP with hypotensive conditions. Measurements obtained from the hind limb showed higher bias than those obtained from the tail or forelimb (P < 0.001). Based on the above, and for practical reasons, the tail was selected as the preferred site of cuff placement in ferrets. Subsequently, a cross-over study was performed in 10 ferrets to establish the minimum dose of butorphanol and midazolam needed to successfully obtain NIBP in 100% of cases. Using this dose (0.2 mg/kg IM, each), reference intervals for NIBP from 63 healthy, young adult ferrets were established at 95-155 mmHg (systolic), 69-109 mmHg (mean) and 51-87 mmHg (diastolic) arterial pressures.

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“…Hence they actually assess the agreement between two different measurement techniques rather than the accuracy of the new technique (Mantha et al 2000). No such standards exist in veterinary medicine, however many recent papers utilize the human accuracy standards but do not appear to adopt the standard methodologies (Binns et al 1995;Branson et al 1997;Pedersen et al 2002;Sawyer et al 2004;Giguère et al 2005;McMurphy et al 2006;Valerio et al 2006;Deflandre and Hellebrekers 2008).…”

Section: Introductionmentioning

confidence: 97%

“…Two non-invasive blood pressure techniques are commonly used in veterinary anaesthesia, automatic oscillometric monitors and manual Doppler monitors. Many studies have compared oscillometric techniques with invasive methods for measuring blood pressure in dogs whilst conscious and anaesthetised with variable results (Geddes et al 1980;Gains et al 1995;Sawyer et al 2004;McMurphy et al 2006;Valerio et al 2006;Deflandre and Hellebrekers 2008).…”

Section: Introductionmentioning

confidence: 98%

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Comparison of invasive and non-invasive blood pressure monitoring during clinical anaesthesia in dogs

2010

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Monitoring blood pressure during anaesthesia is widely recommended in man and animals. The accuracy of any device used to measure blood pressure is an important consideration when selecting monitoring equipment, the ANSI/AAMI SP10 standard is widely cited in this respect in recent veterinary publications. Blood pressure was monitored using invasive and non-invasive techniques during clinical anaesthesia in 19 dogs. The results were compared using Bland-Altman analysis. The bias (and limits of agreement) between invasive and non-invasive measurement was 7.1 mmHg (+/-34.7) for systolic blood pressure, -1.8 mmHg (+/-27.4) for mean blood pressure and 6.9 mmHg (+/-27.5) for diastolic blood pressure. In a clinical setting the bias between invasive and non-invasive measurement techniques was similar or smaller than laboratory reports, however the limits of agreement were considerably wider suggesting that care should be exercised when interpreting NIBP values.

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Accuracy of an oscillometric blood pressure monitor during phenylephrine-induced hypertension in dogs

Abstract: In normotensive dogs, oscillometric measurements of MAP and SAP agreed more closely with direct arterial pressure measurements than oscillometric estimates of DAP. Oscillometric measurement of MAP was accurate during both normotension and hypertension in dogs.

Cited by 39 publications

References 13 publications

No juvenile arterial hypertension in sheep multiples despite reduced nephron numbers

No juvenile arterial hypertension in sheep multiples despite reduced nephron numbers

Non-invasive blood pressure measurement in ferrets ( Mustela putorius furo ) using high definition oscillometry

Comparison of invasive and non-invasive blood pressure monitoring during clinical anaesthesia in dogs

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