Skip to main content
Fig. 2 | BMC Veterinary Research

Fig. 2

From: Prospective clinical study to evaluate an oscillometric blood pressure monitor in pet rabbits

Fig. 2

Four-quadrant (left) and polar plot (right) for systolic (a), mean (b) and diastolic (c) arterial blood pressure measured in 18 pet rabbits undergoing elective neutering surgery. In the concordance plot, each point represents a percentage changes in arterial blood pressure measured with an oscillometric device (∆ NIBP) or invasively (∆ IBP). In the 4-quadrant plot the grey areas limit the 10% and 5% exclusion zone where percentage changes in arterial blood pressure are ≤10% and 5% respectively. Dots in the upper left or lower right quadrant represent inaccurate trending between methods. The positive half circle polar plots show the values for the mean changes of arterial blood pressure measurement obtained non-invasively and invasively. The distance of each point from the center represents the mean change in arterial blood pressure calculated as absolute value of ∆ NIBP+∆ IBP/2; the angle with the horizontal axis shows the concordance of the methods. Solid line defines the mean angular bias and the dotted lines the upper and lower radial limit of agreement (bias ±1.96 × standard deviation) obtained for the data points in black. The grey points represent arterial blood pressure changes ≤5% (exclusion zone 5%) and were excluded from the analysis. Good agreement between the two methods is considered with a mean angular bias and a radial limit of agreement < 5° and < 30° respectively

Back to article page
\